[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:3940":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":11,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":11,"ima_formula":15,"elements":16,"sigelements":23,"key_elements":11,"impurities":11,"cim":24,"ima_status":25,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":28,"discovery_year":11,"strunz10ed1":29,"strunz10ed2":30,"strunz10ed3":31,"strunz10ed4":32,"dana8ed1":33,"dana8ed2":34,"dana8ed3":34,"dana8ed4":35,"csystem":36,"cclass":37,"spacegroup":38,"spacegroupset":39,"a":40,"b":41,"c":42,"alpha":39,"beta":43,"gamma":39,"aerror":44,"berror":44,"cerror":45,"alphaerror":11,"betaerror":46,"gammaerror":11,"va3":11,"z":11,"csmetamict":13,"commentcrystal":11,"twinning":47,"tranglide":11,"parting":11,"epitaxidescription":48,"morphology":49,"tlform":11,"hmin":46,"hmax":50,"hardtype":11,"vhnmin":51,"vhnmax":52,"vhnerror":11,"vhng":53,"vhns":11,"commenthard":54,"dmeas":55,"dmeas2":55,"dcalc":56,"dmeaserror":11,"dcalcerror":46,"commentdense":11,"lustre":11,"lustretype":57,"commentluster":58,"diapheny":59,"streak":60,"colour":61,"commentcolor":11,"colors":62,"streak_colors":66,"luminescence":11,"uv":11,"cleavage":67,"cleavagetype":68,"fracturetype":69,"tenacity":70,"commentbreak":11,"opticaltype":71,"opticalsign":72,"opticalalpha":73,"opticalalpha2":39,"opticalalphaerror":11,"opticalbeta":74,"opticalbeta2":39,"opticalbetaerror":11,"opticalgamma":75,"opticalgamma2":39,"opticalgammaerror":11,"opticalomega":39,"opticalomega2":39,"opticalomegaerror":11,"opticalepsilon":39,"opticalepsilon2":39,"opticalepsilonerror":11,"opticaln":39,"opticaln2":39,"opticalnerror":11,"optical2vcalc":39,"optical2vcalc2":39,"optical2vcalcerror":11,"optical2vmeasured":39,"optical2vmeasured2":39,"optical2vmeasurederror":11,"rimin":76,"rimax":77,"opticaldispersion":78,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":79,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":80,"other":81,"industrial":11,"occurrence":11,"otheroccurrence":82,"type_specimen_store":83,"description_short":11,"aboutname":84,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":85,"reviewed_at":11,"variety_of":11,"varieties":86,"group_members":87,"associates":88,"confused_with":89,"type_localities":96,"occurrence_total":103,"citations":104,"images":185,"structures":316,"synonyms":328,"language_names":334,"wikidata_qid":369,"texts":370},3940,"1:1:3940:2","4eee34b9-6a4d-4268-917e-ce03abbb1a5a","Thomsenolite","Tse",0,"mineral",null,1719,false,"NaCa[AlF\u003Csub>6\u003C\u002Fsub>]·H\u003Csub>2\u003C\u002Fsub>O","NaCaAlF\u003Csub>6\u003C\u002Fsub> · H\u003Csub>2\u003C\u002Fsub>O",[17,18,19,20,21,22],"Al","Ca","Na","O","F","H",[17,18,19,20,21,22],"8.6.17",[26,27],"APPROVED","GRANDFATHERED",1866,"3","C","B","40","11","6","1","Monoclinic",5,14,"0","5.563","5.541","16.115","96.35",2,1,3,"None observed.","Oriented growths of thomsenolite on pachnolite, with thomsenolite (001) and (110) quasi-parallel to pachnolite (110) and (001). Also with thomsenolite (110) and \u003Cmi>(11_0)\u003C\u002Fmi> quasi-parallel to pachnolite (110) and (001).","Crystals commonly prismatic [001]; cubic in aspect with equal development of {001} and {110}. Grouped in parallel aggregates. Also tabular {001}. {110} and terminal prisms strongly striated parallel to the intersection with {001}. {h0l} often curved. Opaline or chalcedony-like crusts and stalactitic masses.",3.5,"220","320",25,"Typically given as Mohs 2.  Modern measurement and discussion by Pauly (1985).","2.981","2.986","Vitreous,Pearly","Pearly on cleavages","Transparent,Translucent","White","Colourless, white, pale lilac; brownish or reddish tinted due to staining; colourless in transmitted light.",[63,64,65],"colorless","white","pink",[64],"On {001}; {110} distinct.","Perfect","Irregular\u002FUneven","brittle","Biaxial","-","1.4072","1.4136","1.415",1.4072,1.415,"r > v","X ∧ c = –52°; Z = b.","Heated in a closed tube it yields water with an acid reaction that etches the glass. At a higher temperature it melts to a clear glass, fusing even more easily than cryolite.","Readily soluble in H2SO4.","Granitic pegmatites","University of Copenhagen, Copenhagen, Denmark, 1868.1499.","Named after Hans Peter Jørgen Julius Thomsen (16 February 1826, Copenhagen, Denmark - 13 February 1909, Copenhagen, Denmark), Professor of Chemistry, University of Copenhagen (Denmark), and founder of the Greenland cryolite industry.","2025-12-10 10:02:22",[],[],[],[90],{"id":91,"name":92,"entrytype":9,"csystem":36,"ima_formula":15,"mindat_formula":14,"hmin":46,"hmax":46,"dmeas":93,"dcalc":94,"primary_image_id":95},3058,"Pachnolite","2.983","2.97",18515,[97],{"id":98,"txt":99,"latitude":100,"longitude":101,"country":102},1958,"Ivigtut Mine, Ivigtut stock, Arsuk Fjord, Sermersooq, Greenland",61.2061111,-48.1755556,"Greenland",21,[105,108,111,115,120,124,129,132,136,140,145,149,153,157,161,164,168,173,177,181],{"id":106,"year":28,"html":107,"doi":11},16125571,"Shepard, C.U. (1866) On hagemannite, a new mineral from Arksutfiord, Greenland. American Journal of Science: 42: 246-247 (as Hagemannite).",{"id":109,"year":28,"html":110,"doi":11},16131717,"Hagemann, G. (1866) On some minerals associated with the cryolite in Greenland. \u003Ci>American Journal of Science and Arts\u003C\u002Fi>,  S. 2 Vol. 42 (124) 93-94",{"id":112,"year":113,"html":114,"doi":11},1118643,1868,"Dana, James D., Brush, George Jarvis (1868) \u003Ci>A System of Mineralogy\u003C\u002Fi> (5th ed.). p.882",{"id":116,"year":117,"html":118,"doi":119},429840,1874,"Nordenskiöld, A. E. (1874) Kristallografisk och kemisk undersökning af några fluormineralier från Ivituk i Grönland. \u003Ci>Geologiska Föreningen i Stockholm Förhandlingar\u003C\u002Fi>,  2 (4) 81-88 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1080\u002F11035897409454001'>doi:10.1080\u002F11035897409454001\u003C\u002Fa>","10.1080\u002F11035897409454001",{"id":121,"year":122,"html":123,"doi":11},16119220,1876,"Koenig, G.A. (1876) On Pachnolite and Thomsenolite. Proceedings of the Academy of Natural Sciences of Philadelphia, 42-50.",{"id":125,"year":126,"html":127,"doi":128},399239,1882,"Des Cloizeaux, Alfred (1882) Notes sur les caractères optiques et cristallographiques de la Pachnolite et de la Thomsénolite. \u003Ci>Bulletin de Minéralogie\u003C\u002Fi>,  5 (9) 310-316 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3406\u002Fbulmi.1882.1767'>doi:10.3406\u002Fbulmi.1882.1767\u003C\u002Fa>","10.3406\u002Fbulmi.1882.1767",{"id":130,"year":126,"html":131,"doi":11},16125576,"Brandl in: Groth (1882) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 7: 470.",{"id":133,"year":134,"html":135,"doi":11},1118647,1892,"Dana, Edward Salisbury; Dana, James Dwight (1892) \u003Ci>A System of Mineralogy\u003C\u002Fi> (6th ed.). John Wiley & Sons, Inc.",{"id":137,"year":138,"html":139,"doi":11},17557084,1906,"Groth, P. (1906) \u003Ci>Chemische Krystallographie\u003C\u002Fi> Vol. 1. Wilhem Engelmann. \u003Ca target='_blank' href='https:\u002F\u002Farchive.org\u002Fdownload\u002Fchemischekrystal01grotuoft\u002Fchemischekrystal01grotuoft.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":141,"year":142,"html":143,"doi":144},103327,1913,"Bøggild, O. B. (1913) Beobachtungen über die Mineralien der Kryolithgruppe. \u003Ci>Zeitschrift für Kristallographie\u003C\u002Fi>,  51 (1-6). 591-613 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.1913.51.1.591'>doi:10.1524\u002Fzkri.1913.51.1.591\u003C\u002Fa>","10.1524\u002Fzkri.1913.51.1.591",{"id":146,"year":147,"html":148,"doi":11},4468630,1922,"(1922) \u003Ci>Atlas Der Krystallformen\u003C\u002Fi> Vol. 8 - Text - Band VIII - Safflorit-Topas. Carl Winters Universitätsbuchhandlung, Heidelberg.",{"id":150,"year":151,"html":152,"doi":11},16125581,1946,"Ferguson, R. (1946) On the crystallography of thomsenolite and pachnolite. Transactions of the Royal Society of Canada, section 4: 40: 1-25.",{"id":154,"year":155,"html":156,"doi":11},521751,1948,"Frondel, Clifford (1948) New data on elpasolite and hagemannite. \u003Ci>American Mineralogist\u003C\u002Fi>,  33 (1-2) 84-87 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM33\u002FAM33_84.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":158,"year":159,"html":160,"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":162,"year":159,"html":163,"doi":11},16125583,"Clark, P.J. (1951) An investigation of the crystal structure of thomsenolite NaCaAlF6H20. M.Sc. Thesis, Department of Geological Sciences, University of Manitoba.",{"id":165,"year":166,"html":167,"doi":11},16125585,1967,"Cocco, G., Castiglione, P.C., Vagliasindi, G. (1967) The crystal structure of thomsenolite. Acta Crystallographica: 23(1): 162-166.",{"id":169,"year":170,"html":171,"doi":172},8312313,1985,"Adhikesavalu, D., Cameron, T. Stanley, Knop, Osvald (1985) Thomsenolite, NaCaAlF6•H2O: hydrogen bonding and comparison with pachnolite. \u003Ci>Canadian Journal of Chemistry\u003C\u002Fi>, 63 (12). 3322-3327 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1139\u002Fv85-550'>doi:10.1139\u002Fv85-550\u003C\u002Fa>","10.1139\u002Fv85-550",{"id":174,"year":170,"html":175,"doi":176},16870651,"Pauly, Hans (1985) Hardness of cryolite, chiolite, cryolithionite and other fluorides from Ivigtut, South Greenland. \u003Ci>Bulletin of the Geological Society of Denmark\u003C\u002Fi>,  34. 145-150 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.37570\u002Fbgsd-1985-34-13'>doi:10.37570\u002Fbgsd-1985-34-13\u003C\u002Fa>","10.37570\u002Fbgsd-1985-34-13",{"id":178,"year":179,"html":180,"doi":11},12908629,1993,"Petersen, Ole V., Secher, Karsten (1993) The Minerals of Greenland. \u003Ci>The Mineralogical Record\u003C\u002Fi>, 24 (2) 1-67",{"id":182,"year":183,"html":184,"doi":11},16967694,2005,"(2005) Thomsenolite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fthomsenolite.pdf' class='refpdflink'>\u003C\u002Fa>",[186,196,206,213,223,233,241,249,256,262,270,277,284,291,299,308],{"id":187,"source_url":188,"license_code":189,"credit_html":190,"title":191,"description":192,"author":193,"original_width":194,"original_height":195},24087,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9496412","Public domain","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9496412\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite - Ivittuut, Arsuk Firth, Kitaa, West Greenland.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa> - Locality: Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland - FOV: 5.3 x 4.0 mm","Modris Baum",640,494,{"id":197,"source_url":198,"license_code":199,"credit_html":200,"title":201,"description":202,"author":203,"original_width":204,"original_height":205},24088,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140281","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140281\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite-120777.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIvittuut\" class=\"extiw\" title=\"en:Ivittuut\">Ivittuut (Ivigtut)\u003C\u002Fa>, Arsuk Firth, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArsuk\" class=\"extiw\" title=\"en:Arsuk\">Arsuk\u003C\u002Fa>, Kitaa (West Greenland) Province, Greenland (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-51122.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.3 x 5.0 x 4.0 cm.\u003C\u002Fdd>\n\u003Cdd>Prismatic thomsenolite crystals RICHLY and nicely line a vug on massive thomsenolite on this OLD-TIME specimen from the Type Locality - Ivigtut, Greenland. Some of the crystals are oxide-coated, which adds a very nice contrast. This is an OUTSTANDING piece for this RARE halide species and locality. Probably mined around 1900. Ex. Ed Swoboda.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",625,485,{"id":207,"source_url":208,"license_code":199,"credit_html":209,"title":210,"description":202,"author":203,"original_width":211,"original_height":212},24089,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140283","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140283\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite-120778.jpg",500,468,{"id":214,"source_url":215,"license_code":216,"credit_html":217,"title":218,"description":219,"author":220,"original_width":221,"original_height":222},24091,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=129568805","CC BY-SA 4.0","Kritzolina, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=129568805\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa> found in Ivittuut, Greenland","Kritzolina",5472,3648,{"id":224,"source_url":225,"license_code":226,"credit_html":227,"title":228,"description":229,"author":230,"original_width":231,"original_height":232},82632,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163475421","CC0 1.0","Shannon Heinle, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163475421\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite (GeoDIL number - 190).jpg","Thomsenolite, NaCaAlF6·(H2O), with siderite, FeCO3, from Ivigtut, Greenland. Thomsenolite is typically an alteration product formed after cryolite, Na3AlF6. This sample, from Ivigtut (where the world's largest known cryolite deposit is being mined) is about 6 cm across.","Shannon Heinle",2518,1543,{"id":234,"source_url":235,"license_code":189,"credit_html":236,"title":237,"description":238,"author":193,"original_width":239,"original_height":240},24086,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9496402","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9496402\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite and Ralstonite - Ivittuut, Arsuk Firth, Kitaa. West Greenland.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa> \"obelisks\" with a few pseudo cubic \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRalstonite\" class=\"extiw\" title=\"en:Ralstonite\">ralstonite\u003C\u002Fa> (top center cluster). Thomsenolite can look cubic as well but the labels says \"ralstonite\" and it would be suprising to have both habits in one cluster. In any case, the rest of the specimen has plenty of ralstonite. - Locality: Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland - FOV: 2.4 x 3.0 mm",507,653,{"id":242,"source_url":243,"license_code":199,"credit_html":244,"title":245,"description":246,"author":203,"original_width":247,"original_height":248},11881,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151656","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10151656\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite-Ralstonite-177548.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRalstonite\" class=\"extiw\" title=\"en:Ralstonite\">Ralstonite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Ivigtut Cryolite deposit, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIvittuut\" class=\"extiw\" title=\"en:Ivittuut\">Ivittuut (Ivigtut)\u003C\u002Fa>, Arsuk Firth, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArsuk\" class=\"extiw\" title=\"en:Arsuk\">Arsuk\u003C\u002Fa>, Kitaa (West Greenland) Province, Greenland (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-1958.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 5.2 x 3.6 x 3.3 cm.\u003C\u002Fdd>\n\u003Cdd>This is a very rich specimen with several shallow vugs into which beautiful, transparent crystals of thomsenolite to 8mm grow. An old specimen from the late 1800s or early 1900s, from the Freiberg State Mining Museum.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",601,800,{"id":250,"source_url":251,"license_code":199,"credit_html":252,"title":253,"description":254,"author":203,"original_width":211,"original_height":255},18514,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159216","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159216\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite-Pachnolite-201528.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPachnolite\" class=\"extiw\" title=\"en:Pachnolite\">Pachnolite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Ivigtut Cryolite deposit, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIvittuut\" class=\"extiw\" title=\"en:Ivittuut\">Ivittuut (Ivigtut)\u003C\u002Fa>, Arsuk Firth, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArsuk\" class=\"extiw\" title=\"en:Arsuk\">Arsuk\u003C\u002Fa>, Kitaa (West Greenland) Province, Greenland (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-1958.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.9 x 3.6 x 3.2 cm.\u003C\u002Fdd>\n\u003Cdd>Thomsenolite and pachnolite are very rare halides and this old-time, very rich, showy and excellent specimen hails from the Type Locality for both species - the Cryolite Deposit, Ivigtut, Greenland. A multi-sided vug in matrix is filled with stepped, white thomsenolite crystals, which are in turn, richly covered with prismatic microcrystals of pachnolite, a dimorph of thomsenolite. Most of the crystals are oxide-coated, which adds a very nice contrast. Probably mined around 1900. Ex. George Elling Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",415,{"id":257,"source_url":258,"license_code":199,"credit_html":259,"title":260,"description":254,"author":203,"original_width":211,"original_height":261},72309,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10153738","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10153738\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite-Pachnolite-182952.jpg",537,{"id":263,"source_url":264,"license_code":199,"credit_html":265,"title":266,"description":267,"author":203,"original_width":268,"original_height":269},24090,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10169469","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10169469\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Pachnolite-Thomsenolite-261771.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPachnolite\" class=\"extiw\" title=\"en:Pachnolite\">Pachnolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Ivigtut Cryolite deposit, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIvittuut\" class=\"extiw\" title=\"en:Ivittuut\">Ivittuut (Ivigtut)\u003C\u002Fa>, Arsuk Firth, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArsuk\" class=\"extiw\" title=\"en:Arsuk\">Arsuk\u003C\u002Fa>, Kitaa (West Greenland) Province, Greenland (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-1958.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.7 x 5.8 x 2.5 cm.\u003C\u002Fdd>\n\u003Cdd>Pachnolite and thomsenolite are very rare halides and this old-time, very rich, and excellent specimen hails from the Type Locality for both species - the Cryolite Deposit, Ivigtut, Greenland. Vuggy, box-work areas of iron-stained pachnolite flank mounds white thomsenolite, a dimorph of pachnolite. This is an excellent, old-time and historical piece for these rare halide species and locality. Probably mined around 1900. Ex. Kessler and Dennis Mullane Collections.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",400,334,{"id":271,"source_url":272,"license_code":199,"credit_html":273,"title":274,"description":254,"author":203,"original_width":275,"original_height":276},72310,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10153740","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10153740\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Thomsenolite-Pachnolite-182953.jpg",417,405,{"id":278,"source_url":279,"license_code":199,"credit_html":280,"title":281,"description":267,"author":203,"original_width":282,"original_height":283},72311,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10169468","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10169468\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Pachnolite-Thomsenolite-261770.jpg",600,544,{"id":285,"source_url":286,"license_code":199,"credit_html":287,"title":288,"description":289,"author":203,"original_width":290,"original_height":268},60098,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460910","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10460910\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ralstonite-Thomsenolite-rare08-2-64a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRalstonite\" class=\"extiw\" title=\"en:Ralstonite\">Ralstonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Ivigtut Cryolite deposit, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIvittuut\" class=\"extiw\" title=\"en:Ivittuut\">Ivittuut (Ivigtut)\u003C\u002Fa>, Arsuk Firth, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FArsuk\" class=\"extiw\" title=\"en:Arsuk\">Arsuk\u003C\u002Fa>, Kitaa (West Greenland) Province, Greenland (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-1958.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 5.2 x 3.6 x 3.3 cm\n\u003Cdl>\u003Cdt>Thomsenolite in Ralstonite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a very rich specimen with several shallow vugs into which beautiful, transparent crystals of thomsenolite to 8mm grow. The front view, for my taste, is shown in the large image. However the back side is also interesting, and has more crystals, in which the top halves are infused with iron staining, giving them an unusual umber coloration. Old specimen from the late 1800s or early 1900s, from the Freiberg State Mining Museum. (TYPE LOCALITY)\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",357,{"id":292,"source_url":293,"license_code":189,"credit_html":294,"title":295,"description":296,"author":193,"original_width":297,"original_height":298},7389,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=114776751","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=114776751\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Cryolite, Thomsenolite-1181521.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCryolite\" class=\"extiw\" title=\"en:Cryolite\">Cryolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Size: 4.55 × 6.35 mm\u003C\u002Fdd>\n\u003Cdd>Locality: Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada\u003C\u002Fdd>\n\u003Cdd>Description: Gift from the Horváths. Found 1996. This is a close-up view of the leached cryolite found in the contact zone exposed in the SE part of the quarry in December 1996. According to the Min Rec special article on this quarry (1998, p. 109), the cavitiy walls are encrusted with numerous small (0.2 – 0.5 mm), tabular crystals of thomsenolite, and the small powdery white areas are probably a mixture of gibbsite and doyleite. When looking at this specimen through a scope, one can see that there are tiny crystals lining the cavities, but I was not able to find any larger than 0.1 mm. That’s too small for me to photograph clearly, but you can see my attempts at \u003Ca rel=\"nofollow\" class=\"external autonumber\" href=\"https:\u002F\u002Fwww.mindat.org\u002Fphoto-1181518.html\">[1]\u003C\u002Fa>. As cryolite goes, this is not remarkable. But it is from the only find of cryolite from this quarry and probably typical of it. In any case, there is currently (Nov 2021) no other photo of cryolite from here on Mindat.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",3334,4653,{"id":300,"source_url":301,"license_code":189,"credit_html":302,"title":303,"description":304,"author":305,"original_width":306,"original_height":307},60111,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=114784701","Mark Joseph Wylie, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=114784701\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Prosopite, Amazonite, Hydrokenoralstonite, Thomsenolite, Cryolite-131839.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FProsopite\" class=\"extiw\" title=\"en:Prosopite\">Prosopite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmazonite\" class=\"extiw\" title=\"en:Amazonite\">Amazonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHydrokenoralstonite\" class=\"extiw\" title=\"en:Hydrokenoralstonite\">Hydrokenoralstonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCryolite\" class=\"extiw\" title=\"en:Cryolite\">Cryolite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Dimensions: 6 cm × 3 cm × 2 cm\u003C\u002Fdd>\n\u003Cdd>Locality: Morefield Mine (Morefield Pegmatite), Winterham, Amelia County, Virginia, USA\u003C\u002Fdd>\n\u003Cdd>Description: Lavender prosopite with green amazonite and alumino-fluorides xls of ralstonite & thomsenolite on cryolite at the other end. 45' level, 145' NE, hanging wall; July of 2002 collected by Sam Dunaway & owner MWylie photo by Gene Fulk.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Mark Joseph Wylie",2298,1720,{"id":309,"source_url":310,"license_code":189,"credit_html":311,"title":312,"description":313,"author":305,"original_width":314,"original_height":315},51183,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=114784703","Mark Joseph Wylie, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=114784703\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Cryolite, Hydrokenoralstonite, Thomsenolite, Prosopite, Amazonite, Rutile-589514.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCryolite\" class=\"extiw\" title=\"en:Cryolite\">Cryolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHydrokenoralstonite\" class=\"extiw\" title=\"en:Hydrokenoralstonite\">Hydrokenoralstonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FThomsenolite\" class=\"extiw\" title=\"en:Thomsenolite\">Thomsenolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FProsopite\" class=\"extiw\" title=\"en:Prosopite\">Prosopite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmazonite\" class=\"extiw\" title=\"en:Amazonite\">Amazonite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRutile\" class=\"extiw\" title=\"en:Rutile\">Rutile\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Dimensions: 6 cm × 3 cm × 2 cm\u003C\u002Fdd>\n\u003Cdd>Locality: Morefield Mine (Morefield Pegmatite), Winterham, Amelia County, Virginia, USA\u003C\u002Fdd>\n\u003Cdd>Description: Sparkling xl faces of micro ralstonite & thomsenolite on cryolite with lavender prosopite & green amazonite on the other end. 45' level, 145' NE, hanging wall, July of 2002 collected by Sam Dunaway, photo by Gene Fulk & owner Mark Wylie.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1000,730,[317,323],{"id":318,"url":319,"label":320,"formula":321,"spacegroup":322,"year":170},13577,"\u002Fcif\u002F13577.cif","Adhikesavalu 1985","Na Ca Al F6 O H2","P 1 21\u002Fc 1",{"id":324,"url":325,"label":326,"formula":327,"spacegroup":322,"year":166},13578,"\u002Fcif\u002F13578.cif","Cocco 1967","Na Ca Al F6 (O H2)",[329,330,331,332,333],"Dimetric Pachnolite","Pachnolite, dimetric","Pachnolith, tegragonaler","Thomsenoliet","Thomsenolit",[335,339,343,347,350,353,357,361,365],{"lang":336,"names":337},"ca",[338],"thomsenolita",{"lang":340,"names":341},"de",[342],"Thomsenolith",{"lang":344,"names":345},"es",[346],"Thomsenolita",{"lang":348,"names":349},"eu",[346],{"lang":351,"names":352},"it",[7],{"lang":354,"names":355},"nn",[356],"pachnolitt",{"lang":358,"names":359},"ta",[360],"தாம்செனோலைட்டு",{"lang":362,"names":363},"uk",[364],"Томсеноліт",{"lang":366,"names":367},"zh",[368],"汤霜晶石","Q409877",{"history":11,"applications":11}]