[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:2277":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":12,"weighting":13,"nolocadd":14,"blacklisted":14,"mindat_formula":15,"mindat_formula_note":11,"ima_formula":16,"elements":17,"sigelements":23,"key_elements":24,"impurities":11,"cim":25,"ima_status":26,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":11,"discovery_year":11,"strunz10ed1":29,"strunz10ed2":30,"strunz10ed3":30,"strunz10ed4":31,"dana8ed1":32,"dana8ed2":33,"dana8ed3":34,"dana8ed4":35,"csystem":36,"cclass":37,"spacegroup":38,"spacegroupset":39,"a":40,"b":41,"c":42,"alpha":43,"beta":44,"gamma":43,"aerror":45,"berror":46,"cerror":45,"alphaerror":11,"betaerror":45,"gammaerror":11,"va3":11,"z":11,"csmetamict":14,"commentcrystal":47,"twinning":48,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":49,"tlform":11,"hmin":50,"hmax":51,"hardtype":11,"vhnmin":43,"vhnmax":43,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":52,"dmeas2":52,"dcalc":53,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":54,"lustretype":54,"commentluster":11,"diapheny":55,"streak":56,"colour":57,"commentcolor":11,"colors":58,"streak_colors":62,"luminescence":11,"uv":11,"cleavage":63,"cleavagetype":64,"fracturetype":65,"tenacity":11,"commentbreak":11,"opticaltype":66,"opticalsign":67,"opticalalpha":68,"opticalalpha2":43,"opticalalphaerror":11,"opticalbeta":69,"opticalbeta2":43,"opticalbetaerror":11,"opticalgamma":70,"opticalgamma2":43,"opticalgammaerror":11,"opticalomega":43,"opticalomega2":43,"opticalomegaerror":11,"opticalepsilon":43,"opticalepsilon2":43,"opticalepsilonerror":11,"opticaln":43,"opticaln2":43,"opticalnerror":11,"optical2vcalc":71,"optical2vcalc2":43,"optical2vcalcerror":11,"optical2vmeasured":72,"optical2vmeasured2":43,"optical2vmeasurederror":11,"rimin":73,"rimax":74,"opticaldispersion":75,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":11,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":76,"industrial":11,"occurrence":11,"otheroccurrence":11,"type_specimen_store":11,"description_short":77,"aboutname":78,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":79,"reviewed_at":11,"variety_of":11,"varieties":80,"group_members":81,"associates":129,"confused_with":130,"type_localities":131,"occurrence_total":138,"citations":139,"images":233,"structures":457,"synonyms":468,"language_names":474,"wikidata_qid":507,"texts":508},2277,"1:1:2277:0","7067ebe1-4c5b-4349-af7f-243fc4894b82","Kröhnkite","Khk",0,"mineral",null,471248,1405,false,"Na\u003Csub>2\u003C\u002Fsub>Cu(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O","Na\u003Csub>2\u003C\u002Fsub>Cu(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O",[18,19,20,21,22],"Cu","Na","O","S","H",[18,19,20,21,22],[18],"25.2.11",[27,28],"APPROVED","GRANDFATHERED","7","C","30","29","3","2","1","Monoclinic",5,14,"P21\u002Fc ","5.807","12.656","5.517","0","108.32",1,2,"Cell data from Hawthorne and Ferguson (1975).","On {101}, common; twins heart-shaped at times.","Crystals short prismatic [001]; also octahedral with large {110} and {011} and rather elongated [100]. Prismatic or fibrous aggregates and crusts; massive, granular.",2.5,3,"2.90","2.913","Vitreous","Transparent","White","Blue, greenish-blue; light blue to colourless in transmitted light",[59,60,61],"blue","colorless","white",[61],"On {010} perfect; on {1¯01} very imperfect.","Perfect","Conchoidal","Biaxial","-","1.544","1.578","1.601","76","78",1.544,1.601,"weak","Water soluble.","The anhydrous phase is saranchinaite which may form after heating kröhnkite to 200°C.","Named in honor of Johann Berthold Christian Kröhnke (10 December 1832, Glückstadt, Schleswig-Holstein, Germany - 14 June 1915, Hamburg, Germany), chemist who was working in Chile and first analyzed the mineral. He later became a German consul to Chile.","2025-08-11 12:14:21",[],[82,91,98,106,114,123],{"id":83,"name":84,"entrytype":9,"csystem":36,"ima_formula":85,"mindat_formula":86,"hmin":87,"hmax":87,"dmeas":88,"dcalc":89,"primary_image_id":90},753,"Brandtite","Ca\u003Csub>2\u003C\u002Fsub>Mn\u003Csup>2+\u003C\u002Fsup>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Mn\u003Csup>2+\u003C\u002Fsup>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O",3.5,"3.67","3.7",3789,{"id":92,"name":93,"entrytype":9,"csystem":36,"ima_formula":94,"mindat_formula":95,"hmin":51,"hmax":51,"dmeas":11,"dcalc":96,"primary_image_id":97},55373,"Dobšináite","Ca\u003Csub>2\u003C\u002Fsub>Ca(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Ca(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O","3.395",7302,{"id":99,"name":100,"entrytype":9,"csystem":36,"ima_formula":101,"mindat_formula":102,"hmin":87,"hmax":87,"dmeas":103,"dcalc":104,"primary_image_id":105},3450,"Roselite","Ca\u003Csub>2\u003C\u002Fsub>Co(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Co(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O","3.46","3.65",21141,{"id":107,"name":108,"entrytype":9,"csystem":36,"ima_formula":109,"mindat_formula":110,"hmin":51,"hmax":51,"dmeas":111,"dcalc":112,"primary_image_id":113},39845,"Rruffite","Ca\u003Csub>2\u003C\u002Fsub>Cu(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Cu(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O","3.79","3.77",21255,{"id":115,"name":116,"entrytype":9,"csystem":36,"ima_formula":117,"mindat_formula":118,"hmin":51,"hmax":119,"dmeas":120,"dcalc":121,"primary_image_id":122},4268,"Wendwilsonite","Ca\u003Csub>2\u003C\u002Fsub>Mg(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Mg(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O",4,"3.52","3.478",27946,{"id":124,"name":125,"entrytype":9,"csystem":36,"ima_formula":126,"mindat_formula":127,"hmin":51,"hmax":51,"dmeas":128,"dcalc":112,"primary_image_id":11},4415,"Zincroselite","Ca\u003Csub>2\u003C\u002Fsub>Zn(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 2H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Zn(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O","3.75",[],[],[132],{"id":133,"txt":134,"latitude":135,"longitude":136,"country":137},641,"Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta, Chile",-22.2894444,-68.9011111,"Chile",34,[140,144,148,152,156,160,164,169,173,177,181,185,190,195,200,205,208,213,218,223,228],{"id":141,"year":142,"html":143,"doi":11},15647323,1860,"Domeyko, Ignacio (1860) \u003Ci>Elementos de Mineralojia [Elements of Mineralogy]\u003C\u002Fi> (2nd ed.) Ferrocarril, Santiago.",{"id":145,"year":146,"html":147,"doi":11},16114287,1879,"Domeyko, I. (1879) Elementos de Mineralogia, 3rd. edition: 250 (as Krönnkite).",{"id":149,"year":150,"html":151,"doi":11},16114288,1889,"Darapsky (1889) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: I: 192.",{"id":153,"year":154,"html":155,"doi":11},16114289,1896,"Herz (1896) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 26: 16 (as Salvadorite).",{"id":157,"year":158,"html":159,"doi":11},15933006,1908,"Palache, C., Warren, C.H. (1908) Kröhnkite, natrochalcite (a new mineral), and other sulphates from Chile. \u003Ci>American Journal Of Science\u003C\u002Fi>,  S. 4 Vol. 26. 342-348 \u003Ca target='_blank' href='https:\u002F\u002Fwww.ajsonline.org\u002Fcontent\u002Fajs\u002Fs4-26\u002F154\u002F342.full-text.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":161,"year":158,"html":162,"doi":163},103049,"Palache, Ch.; Warren, C. H. (1908) Kröhnkit, Natrochalcit (ein neues Mineral) und andere Sulfate aus Chile. \u003Ci>Zeitschrift für Kristallographie\u003C\u002Fi>,  45 (1-6). 529-538 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.1908.45.1.529'>doi:10.1524\u002Fzkri.1908.45.1.529\u003C\u002Fa>","10.1524\u002Fzkri.1908.45.1.529",{"id":165,"year":166,"html":167,"doi":168},1153492,1939,"Palache, C. (1939) Kroehnkite and natrochalcite from Chile. \u003Ci>American Journal of Science\u003C\u002Fi>,  237 (7) 447-455 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2475\u002Fajs.237.7.447'>doi:10.2475\u002Fajs.237.7.447\u003C\u002Fa>","10.2475\u002Fajs.237.7.447",{"id":170,"year":171,"html":172,"doi":11},16114293,1941,"Gordon (1941) Academy of Sciences Philadelphia, Not. Nat., no. 72.",{"id":174,"year":175,"html":176,"doi":11},1118652,1951,"Palache, Charles; Berman, Harry; Frondel, Clifford (1951) \u003Ci>The System of Mineralogy\u003C\u002Fi> (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.",{"id":178,"year":179,"html":180,"doi":11},17635466,1952,"Dahlman, Bertil (1952) The crystal structures of kröhnkite, CuNa2(SO2)2-2H2O and brandtite, MnCa2(AsO4)2- 2H2O . \u003Ci>Arkiv för Mineralogi och Geologi\u003C\u002Fi>,  1 (3-4). 339-366",{"id":182,"year":183,"html":184,"doi":11},16114296,1954,"Leone M., Sgarlata F. (1954) Struttura della kroehnkite e contributo alla cristallochimica del rame. Periodico di Mineralogia – Roma pp. 223-234.",{"id":186,"year":187,"html":188,"doi":189},210990,1975,"Hawthorne, F. C., Ferguson, R. B. (1975) Refinement of the crystal structure of kröhnkite. \u003Ci>Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry\u003C\u002Fi>,  31 (6) 1753-1755 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs0567740875006048'>doi:10.1107\u002Fs0567740875006048\u003C\u002Fa>","10.1107\u002Fs0567740875006048",{"id":191,"year":192,"html":193,"doi":194},116276,2002,"Fleck, Michel, Kolitsch, U., Hertweck, B. (2002) Natural and synthetic compounds with kröhnkite-type chains: review and classification. \u003Ci>Zeitschrift für Kristallographie\u003C\u002Fi>,  217 (9). 435-443 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.217.9.435.22883'>doi:10.1524\u002Fzkri.217.9.435.22883\u003C\u002Fa>","10.1524\u002Fzkri.217.9.435.22883",{"id":196,"year":197,"html":198,"doi":199},116396,2003,"Fleck, Michel, Kolitsch, U. (2003) Natural and synthetic compounds with kröhnkite-type chains. An update. \u003Ci>Zeitschrift für Kristallographie\u003C\u002Fi>,  218 (8). 553-567 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.218.8.553.20689'>doi:10.1524\u002Fzkri.218.8.553.20689\u003C\u002Fa>","10.1524\u002Fzkri.218.8.553.20689",{"id":201,"year":202,"html":203,"doi":204},116552,2005,"Kolitsch, Uwe, Fleck, Michel (2005) Second update on compounds with kröhnkite-type chains. \u003Ci>Zeitschrift für Kristallographie\u003C\u002Fi>,  220 (1). 31-41 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.220.1.31.58894'>doi:10.1524\u002Fzkri.220.1.31.58894\u003C\u002Fa>","10.1524\u002Fzkri.220.1.31.58894",{"id":206,"year":202,"html":207,"doi":11},16965408,"(2005) Kröhnkite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fkrohnkite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":209,"year":210,"html":211,"doi":212},128560,2006,"Kolitsch, Uwe, Fleck, Michel (2006) Third update on compounds with krohnkite-type chains: the crystal structure of wendwilsonite [Ca2Mg(AsO4)22H2O] and the new triclinic structure types of synthetic AgSc(CrO4)22H2O and M2Cu(Cr2O7)22H2O (M = Rb, Cs) \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  18 (4) 471-482 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002F0935-1221\u002F2006\u002F0018-0471'>doi:10.1127\u002F0935-1221\u002F2006\u002F0018-0471\u003C\u002Fa>","10.1127\u002F0935-1221\u002F2006\u002F0018-0471",{"id":214,"year":215,"html":216,"doi":217},65289,2015,"Majzlan, Juraj, Zittlau, Arne H., Grevel, Klaus-Dieter, Schliesser, Jacob, Woodfield, Brian F., Dachs, Edgar, Števko, Martin, Chovan, Martin, Plášil, Jakub, Sejkora, Jiří, Milovská, Stanislava (2015) Thermodynamic Properties and Phase Equilibria of the Secondary Copper Minerals Libethenite, Olivenite, Pseudomalachite, Kröhnkite, Cyanochroite, and Devilline. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  53 (5) 937-960 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3749\u002Fcanmin.1400066'>doi:10.3749\u002Fcanmin.1400066\u003C\u002Fa>","10.3749\u002Fcanmin.1400066",{"id":219,"year":220,"html":221,"doi":222},154278,2018,"Marinova, Delyana, Wildner, Manfred, Bancheva, Tsvetelina, Stoyanova, Radostina, Georgiev, Mitko, Stoilova, Donka G. (2018) Synthesis, structure and properties of blödite-type solid solutions, Na2Co1−xCux(SO4)2·4H2O (0 \u003C x ≤ 0.18), and crystal structure of synthetic kröhnkite, Na2Cu(SO4)2·2H2O. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  45 (8) 801-817 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00269-018-0963-0'>doi:10.1007\u002Fs00269-018-0963-0\u003C\u002Fa>","10.1007\u002Fs00269-018-0963-0",{"id":224,"year":225,"html":226,"doi":227},16135153,2021,"Weil, Matthias, Kolitsch, Uwe (2021) (NH\u003Csub>4\u003C\u002Fsub>)Mg(HSO\u003Csub>4\u003C\u002Fsub>)(SO\u003Csub>4\u003C\u002Fsub>)(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>2\u003C\u002Fsub> and NaSc(CrO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>2\u003C\u002Fsub>, two crystal structures comprising kröhnkite-type chains, and the temperature-induced phase transition (NH\u003Csub>4\u003C\u002Fsub>)Mg(HSO\u003Csub>4\u003C\u002Fsub>)(SO\u003Csub>4\u003C\u002Fsub>)(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>2\u003C\u002Fsub> \u003C-> (NH\u003Csub>4\u003C\u002Fsub>)MgH(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>2\u003C\u002Fsub>. \u003Ci>Acta Crystallographica Section C Structural Chemistry\u003C\u002Fi>,  77 (3). 144-151 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs2053229621001650'>doi:10.1107\u002Fs2053229621001650\u003C\u002Fa>","10.1107\u002Fs2053229621001650",{"id":229,"year":230,"html":231,"doi":232},17546015,2024,"Biagioni, C., Mugnaioli, E., Lorenzon, S., Mauro, D., Musetti, S., Sejkora, J., Belmonte, D., Demitri, N., Dolníček, Z. (2024) Nannoniite, IMA 2024-010, in \u003Ci>IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 80\u003C\u002Fi>. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  36 (4). 599-604 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.5194\u002Fejm-36-599-2024'>doi:10.5194\u002Fejm-36-599-2024\u003C\u002Fa>","10.5194\u002Fejm-36-599-2024",[234,244,251,258,266,273,280,287,295,302,309,316,326,333,340,348,356,363,370,377,384,390,396,403,409,415,421,428,434,441,451],{"id":235,"source_url":236,"license_code":237,"credit_html":238,"title":239,"description":240,"author":241,"original_width":242,"original_height":243},13668,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120042","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120042\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-20686.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>WOW! This is a MAJOR crystal of a very rare species, from an important and completely defunct locality! Krohnkite usually occurs as small crystals, or as lamellar aggregates filling fissure seams. Freestanding crystals are rare and those of several cm are already major for the species. This one is a whopping 8.5 CENTIMETERS! The crystal is fully formed though with some irregular growth on the edges, and is also fully terminated (slight etching but the termination IS obvious and distinct). It is completely translucent and even transparent in portions. The color is unreal - it LOOKS synthetic though it is most certainly not. Front and back views are shown (top and bottom panels, respectively). Old specimen with an antique Ward's label accompanying it. 8.5 x 2.2 x 0.9 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",218,600,{"id":245,"source_url":246,"license_code":237,"credit_html":247,"title":248,"description":249,"author":241,"original_width":243,"original_height":250},13669,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120465","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120465\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-21581.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>An EXCEPTIONALLY well-crystallized example of this rare copper species, with crystals to 1.7 cm though most average about 1 cm . SHARP, ISOLATED crystals of this species are rare for several reasons: firstly, most krohnkite from this locality formed as thick massive vein filling and thus lacks individual crystal form; and secondly the locality has been closed and defunct for decades. It remains one of the most important rarities locales in the world, but specimens are getting harder and harder to obtain out of old collections. 6 x 4.3 x 3 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",442,{"id":252,"source_url":253,"license_code":237,"credit_html":254,"title":255,"description":256,"author":241,"original_width":257,"original_height":243},63236,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120469","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120469\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-21585.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>An EXCEPTIONALLY well-crystallized example of this rare copper species, with crystals to about 1 cm . SHARP, ISOLATED crystals of this species are rare for several reasons: firstly, most krohnkite from this locality formed as thick massive vein filling and thus lacks individual crystal form; and secondly the locality has been closed and defunct for decades. It remains one of the most important rarities locales in the world, but specimens are getting harder and harder to obtain out of old collections. 2 x 1.6 x 1.4 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",500,{"id":259,"source_url":260,"license_code":237,"credit_html":261,"title":262,"description":263,"author":241,"original_width":264,"original_height":265},13670,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10127130","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10127130\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-39034.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A very rare and exceptional specimen with elongated, translucent crystals to 4 cm. This is a superior specimen of a quality I have not seen for sale before. Krohnkite is extremely fragile and large crystallized specimens, as opposed to massive specimens, are almost impossible to get. The pics say it all 5.4 x 3.6 x 2.4 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",800,492,{"id":267,"source_url":268,"license_code":237,"credit_html":269,"title":270,"description":271,"author":241,"original_width":272,"original_height":243},63237,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120471","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120471\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-21586.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>An EXCEPTIONALLY well-crystallized example of this rare copper species, with crystals to 1.7 cm reaching for the apex. SHARP, ISOLATED crystals of this species are rare for several reasons: firstly, most krohnkite from this locality formed as thick massive vein filling and thus lacks individual crystal form; and secondly the locality has been closed and defunct for decades. It remains one of the most important rarities locales in the world, but specimens are getting harder and harder to obtain out of old collections. This is an unusually aesthetic and attractive thumbnail specimen with rich, silky lustre to it. 2.3 x 1.8 x 1.2 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",523,{"id":274,"source_url":275,"license_code":237,"credit_html":276,"title":277,"description":278,"author":241,"original_width":243,"original_height":279},13671,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10134643","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10134643\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-52253.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>This super-rich specimen of kroehnkite still has the $500 label with it from the dispersion of the Hauck Collection, and when you see it, you will know why. The layer of kroehnkite is 2.5 CENTIMETERS THICK and is gorgeous! And, it has the almost unnatural-looking blue color that makes this sodium copper sulfate so unique. Good kroehnkites are just NOT easily obtainable! this is old material 9.1 x 5.0 x 4.5cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",413,{"id":281,"source_url":282,"license_code":237,"credit_html":283,"title":284,"description":285,"author":241,"original_width":286,"original_height":243},63238,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10124303","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10124303\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-34302.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>This lamellar cluster of vertical crystals grown against one another is truly spectacular, for color; but more than that has a significance for this now-defunct locality , which produced a suite of amazing copper species. RARE material in this quality and size! 4.1 x 1.6 x 1.4 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",335,{"id":288,"source_url":289,"license_code":237,"credit_html":290,"title":291,"description":292,"author":241,"original_width":293,"original_height":294},13672,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142290","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142290\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-136230.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.2 x 1.5 x 0.9 cm.\u003C\u002Fdd>\n\u003Cdd>A SOLID, OLD-TIME and SHOWY specimen of the RARE sulfate, krohnkite, from the Type Locality, the Chuquicamata Mine of Chile. Without question, this specimen exhibits the most intense teal blue color I have ever seen in a natural mineral specimen and has great translucence! And the variation in blue color, in itself, is very noteworthy. The piece exhibits what is classic for the species, lamellar growth of curved crystals in parallel bundles. Ex. George Elling Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",274,400,{"id":296,"source_url":297,"license_code":237,"credit_html":298,"title":299,"description":300,"author":241,"original_width":264,"original_height":301},13673,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151622","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151622\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-177531.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.0 x 1.6 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>This piece is a strange krohnkite specimen with unique green-blue crystals in the center of this cluster, which I thought might be Lindgrenite at first. However, they are just krohnkite with some kind of unusual composition, as the crystal habit is right and the green hue grades into blue. Tim Blackwood Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",494,{"id":303,"source_url":304,"license_code":237,"credit_html":305,"title":306,"description":307,"author":241,"original_width":308,"original_height":243},63239,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10135149","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10135149\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-54394.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Without question, this specimen of sodium, copper, sulphate from Chile, exhibits the most intense teal blue color I have ever seen in a natural mineral specimen. It displays what is classic for the species, lamellar growth of crystals in parallel bundles. What is more unusual are the terminated small crystals, to .25 cm across , at one end perched on the terminations of the larger crystals. The closest color to this can be found in the post mining crystals of melanterite and chalcanthite. A very beautiful specimen from a long-defunct locality which has also produced the best of this species (and is the type locale as well) 6.2 x 3.3 x 2.2 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",439,{"id":310,"source_url":311,"license_code":237,"credit_html":312,"title":313,"description":314,"author":241,"original_width":243,"original_height":315},13674,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10160778","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10160778\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-211545.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.7 x 3.4 x 2.5 cm.\u003C\u002Fdd>\n\u003Cdd>A solid, old-time and fine specimen of the rare sulfate, krohnkite, from the Type Locality, the Chuquicamata Mine of Chile. This specimen exhibits the most intense teal blue color. And the variation in blue color, in itself, is very noteworthy. The piece exhibits what is highly unusual for the species, having blocky, cavernous, crystal form. The usual classic for the species are lamellar growth of curved crystals in parallel bundles. Ex. George Elling Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",595,{"id":317,"source_url":318,"license_code":319,"credit_html":320,"title":321,"description":322,"author":323,"original_width":324,"original_height":325},13675,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=76682754","CC BY-SA 4.0","Prospectorminerals, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=76682754\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Kröhnkite.jpg","A unique, singular crystal of light blue Kröhnkite from a type locality. It stands out from other minerals of the species due to its condition and state of no damage.\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Type locality of kröhnkite is Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"https:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Prospectorminerals",1280,960,{"id":327,"source_url":328,"license_code":237,"credit_html":329,"title":330,"description":331,"author":241,"original_width":332,"original_height":243},63241,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10141149","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10141149\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-122985.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.0 x 3.6 x 2.7 cm.\u003C\u002Fdd>\n\u003Cdd>A LARGE, SOLID, OLD-TIME and SHOWY specimen of the RARE sulfate, krohnkite, from the Type Locality, the Chuquicatmata Mine of Chile. Without question, this specimen exhibits the most intense teal blue color I have ever seen in a natural mineral specimen and has great translucence! And the variation in blue color, in itself, is very noteworthy. The piece exhibits what is classic for the species, lamellar growth of crystals in parallel bundles. Ex. George Elling Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",282,{"id":334,"source_url":335,"license_code":237,"credit_html":336,"title":337,"description":338,"author":241,"original_width":264,"original_height":339},63242,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10150105","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10150105\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-171943.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 12.4 x 8.0 x 4.9 cm.\u003C\u002Fdd>\n\u003Cdd>Absolutely stunning color makes this unusually large matrix krohnkite a beauty to look at, but it’s also a super rich example of an extremely rare copper species. Krohnkite is a very rare copper sulfate. Ex. Philadelphia Academy of Natural Sciences Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",525,{"id":341,"source_url":342,"license_code":237,"credit_html":343,"title":344,"description":345,"author":241,"original_width":346,"original_height":347},63243,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151168","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151168\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-176460.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.6 x 1.4 x 0.5 cm\u003C\u002Fdd>\n\u003Cdd>(largest). This is an old-time, rich collection of gemmy to translucent, turquoise-blue krohnkite sections from the Type Locality - the famous Chuquicamata Mine of Chile. Ex. George Elling Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",550,454,{"id":349,"source_url":350,"license_code":237,"credit_html":351,"title":352,"description":353,"author":241,"original_width":354,"original_height":355},63244,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10155240","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10155240\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-191613.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.9 x 4.7 x 3.2 cm.\u003C\u002Fdd>\n\u003Cdd>A huge 215-gram specimen of lamellar, intergrown krohnkite crystals from the deposits at Chuquicamata. This is a beautiful piece with elegant vertical form and the classic intense neon color. This specimen is composed of crystals grown together in a vein filling. It is terminated at both ends with microcrystalline growth tips that contacted the matrix which enclosed it.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",485,750,{"id":357,"source_url":358,"license_code":237,"credit_html":359,"title":360,"description":314,"author":241,"original_width":361,"original_height":362},63246,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10160777","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10160777\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-211544.jpg",672,700,{"id":364,"source_url":365,"license_code":237,"credit_html":366,"title":367,"description":368,"author":241,"original_width":369,"original_height":243},63247,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165034","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165034\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-238873.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 10.8 x 8.3 x 4.0 cm.\u003C\u002Fdd>\n\u003Cdd>This striking, vivid blue cabinet specimen was formerly in the collection of well-known collector Marion Stuart. Her accompanying card and unique plastic engraved label identify the mineral as leightonite, an ultra-rare copper sulfate, which typically has the crystal form seen on this piece. The Type Locality is the Chuquicamata Mine of Chile. Krohnkite is another ultra-rare copper sulfate, with similar color from Chuquicamata, but usually forms in lamellar growth of curved crystals in parallel bundles. Another dealer had this specimen X-rayed in May, 2008 and the report is included with the specimen. It was krohnkite on the rhyolite matrix, but in a very uncommon botryoidal\u002Fcrust-like form. This specimen exhibits the most intense teal blue color I have ever seen in a natural mineral specimen and has great translucence. And the variation in blue color, in itself, is very noteworthy.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",586,{"id":371,"source_url":372,"license_code":237,"credit_html":373,"title":374,"description":375,"author":241,"original_width":294,"original_height":376},63249,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460845","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460845\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-rare08-2-48c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKrohnkite\" class=\"extiw\" title=\"en:Krohnkite\">Krohnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 3.0 x 1.6 x 1.5 cm\n\u003Cdl>\u003Cdt>Krohnkite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Krohnkite itself is a bizarre species, occuring in good crystals of size only at this classic, sadly underappreciated locality. Specimens today are rare, in crystal form, although massive pieces are much more common. This piece is a strange krohnkite specimen with unique green-blue crystals in the center of this clustre, which I thought might be Lindgrenite at first. However, they are just krohnkite with some kin dof unusual composition, as the crystal habit is right and the green hue grades into blue.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",296,{"id":378,"source_url":379,"license_code":237,"credit_html":380,"title":381,"description":382,"author":241,"original_width":383,"original_height":264},63250,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465160","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465160\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-t07-38a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKrohnkite\" class=\"extiw\" title=\"en:Krohnkite\">Krohnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 7.5 x 2.3 x 1.2 cm\n\u003Cdl>\u003Cdt>Krohnkite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This venerable open pit copper mine has produced the finest specimens of krohnkite, a rare, hydrated, sodium, copper, sulfate. The rich, aquamarine color, translucence, good crystal form, all add to the collectability of this species. This is the single largest crystal I have ever seen, of this mineral. It is a large, translucent, complete crystal that is about ten times bigger than the norm. And those already are rare. Chuqui is one of the most significant localities for interesting minerals in the world, and sadly one of the most underappreciated in the hobby at large. Not only is this rare and significant, but it is beautiful enough to grace any shelf\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",315,{"id":385,"source_url":386,"license_code":237,"credit_html":387,"title":388,"description":382,"author":241,"original_width":389,"original_height":294},63251,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465161","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465161\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-t07-38b.jpg",159,{"id":391,"source_url":392,"license_code":237,"credit_html":393,"title":394,"description":382,"author":241,"original_width":395,"original_height":294},63252,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465192","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465192\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-t07-38c.jpg",255,{"id":397,"source_url":398,"license_code":237,"credit_html":399,"title":400,"description":401,"author":241,"original_width":294,"original_height":402},63253,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10476848","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10476848\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-tuc8-117c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKrohnkite\" class=\"extiw\" title=\"en:Krohnkite\">Krohnkite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 12.4 x 8.0 x 4.9 cm\n\u003Cdl>\u003Cdt>Krohnkite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Absolutely stunning color makes this unusually large matrix krohnkite a beauty to look at, but its also a super rich example of an extremely rare copper species. Chuqui is located 15 km N of Calama, II Region, Chile. It is the world's largest open pit copper mine, according to MinDat. It hit its heyday by th emid-1900s and during that time produced innumerable mineral specimens which sadly went to the crusher. However, a few people there saved some pieces, and it later turned out that the mine produced a host of new species (many mislabelled in these old collections), identified only long after they were taken from the ground. This one was named after B. Kr�hnke, who first analyzed the mineral and realized that not all \"chalcanthite\" from this mine was that common stuff! Krohnkite is, instead, a very rare copepr sulfate. Ex Philadelphia Academy of Natural Science.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",295,{"id":404,"source_url":405,"license_code":237,"credit_html":406,"title":407,"description":401,"author":241,"original_width":294,"original_height":408},63255,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10476851","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10476851\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-tuc8-117d.jpg",372,{"id":410,"source_url":411,"license_code":237,"credit_html":412,"title":413,"description":368,"author":241,"original_width":294,"original_height":414},64208,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165035","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10165035\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-238874.jpg",367,{"id":416,"source_url":417,"license_code":237,"credit_html":418,"title":419,"description":375,"author":241,"original_width":294,"original_height":420},64618,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460844","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460844\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-rare08-2-48b.jpg",313,{"id":422,"source_url":423,"license_code":237,"credit_html":424,"title":425,"description":426,"author":241,"original_width":243,"original_height":427},63240,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139752","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139752\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-Natrochalcite-119611.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNatrochalcite\" class=\"extiw\" title=\"en:Natrochalcite\">Natrochalcite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.2 x 5.0 x 4.7 cm.\u003C\u002Fdd>\n\u003Cdd>An exceptionally rich, old-time specimen of the rare sulfate, krohnkite, from the Type Locality, the Chuquicatmata Mine of Chile. The piece is beautifully complimented by the rare, emerald-green sulfate, natrochalcite. Chuquicamata is also the Type Locality for natrochalcite. Without question, this specimen exhibits the most intense teal blue color I have ever seen in a natural mineral specimen and has great translucence. And the variation in blue color, in itself, is very noteworthy. The veins exhibit what is classic for the species, lamellar growth of crystals in parallel bundles. The piece was purchased on September 11, 1939. Ex. Harvard and George Elling Collections.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",346,{"id":429,"source_url":430,"license_code":237,"credit_html":431,"title":432,"description":426,"author":241,"original_width":257,"original_height":433},63245,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10156819","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10156819\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-Natrochalcite-195016.jpg",399,{"id":435,"source_url":436,"license_code":237,"credit_html":437,"title":438,"description":439,"author":241,"original_width":440,"original_height":243},17407,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10166047","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10166047\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-Natrochalcite-244279.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKr%C3%B6hnkite\" class=\"extiw\" title=\"en:Kröhnkite\">Kröhnkite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNatrochalcite\" class=\"extiw\" title=\"en:Natrochalcite\">Natrochalcite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Chuquicamata Mine, Chuquicamata District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalama\" class=\"extiw\" title=\"en:Calama\">Calama\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEl_Loa_Province\" class=\"extiw\" title=\"en:El Loa Province\">El Loa Province\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntofagasta_Region\" class=\"extiw\" title=\"en:Antofagasta Region\">Antofagasta Region\u003C\u002Fa>, Chile (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-641.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.8 x 2.1 x 1.8 cm.\u003C\u002Fdd>\n\u003Cdd>A rich, old-time and showy specimen of the rare sulfate, krohnkite, from the Type Locality, the Chuquicamata Mine of Chile. The piece is beautifully complimented by the very rare emerald-green sulfate, natrochalcite. Chuquicamata is also the Type Locality for natrochalcite. Without question, this specimen exhibits the most intense teal blue color I have ever seen in a natural mineral specimen and has great translucence! And the variation in blue color, in itself, is very noteworthy. The veins exhibit what is classic for the species, lamellar growth of crystals in parallel bundles. Ex. John White Collection of Seattle and accompanied by with an old, water-stained label.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",548,{"id":442,"source_url":443,"license_code":444,"credit_html":445,"title":446,"description":447,"author":448,"original_width":449,"original_height":450},14314,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=118184078","CC BY-SA 2.0","Pacific Museum of Earth from Canada, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=118184078\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Leightonite with Kroehnkite (48002951588).jpg","Chuquicamata, Chile","Pacific Museum of Earth from Canada",4000,6000,{"id":452,"source_url":453,"license_code":237,"credit_html":454,"title":455,"description":439,"author":241,"original_width":243,"original_height":456},17406,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10166046","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10166046\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Krohnkite-Natrochalcite-244278.jpg",473,[458,463],{"id":97,"url":459,"label":460,"formula":461,"spacegroup":462,"year":187},"\u002Fcif\u002F7302.cif","Hawthorne 1975","Na2 Cu S2 O10 H4","P 1 21\u002Fc 1",{"id":464,"url":465,"label":466,"formula":467,"spacegroup":462,"year":179},7303,"\u002Fcif\u002F7303.cif","Dahlman 1952","Cu Na2 S2 O10 H4",[469,470,471,472,473],"Kroehnkite","Kröhnkiet","Krömkite","Krönnkite","Salvadorite (of Herz)",[475,479,483,487,490,494,497,500,503],{"lang":476,"names":477},"ca",[478],"kroehnkita",{"lang":480,"names":481},"de",[482],"Kröhnkit",{"lang":484,"names":485},"es",[486],"Kröhnkita",{"lang":488,"names":489},"eu",[486],{"lang":491,"names":492},"fa",[493],"کروهنکیت",{"lang":495,"names":496},"fr",[7],{"lang":498,"names":499},"it",[469,7],{"lang":501,"names":502},"pl",[482],{"lang":504,"names":505},"sv",[506],"kröhnkit","Q2251684",{"history":11,"applications":11}]