[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:4181":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":15,"elements":16,"sigelements":19,"key_elements":11,"impurities":11,"cim":20,"ima_status":21,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":24,"discovery_year":25,"strunz10ed1":26,"strunz10ed2":27,"strunz10ed3":27,"strunz10ed4":28,"dana8ed1":29,"dana8ed2":30,"dana8ed3":30,"dana8ed4":26,"csystem":31,"cclass":32,"spacegroup":33,"spacegroupset":34,"a":35,"b":34,"c":34,"alpha":34,"beta":34,"gamma":34,"aerror":11,"berror":11,"cerror":11,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":36,"csmetamict":14,"commentcrystal":11,"twinning":11,"tranglide":11,"parting":37,"epitaxidescription":11,"morphology":38,"tlform":39,"hmin":40,"hmax":41,"hardtype":11,"vhnmin":34,"vhnmax":34,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":42,"dmeas2":42,"dcalc":43,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":44,"commentluster":11,"diapheny":45,"streak":46,"colour":47,"commentcolor":48,"colors":49,"streak_colors":55,"luminescence":11,"uv":56,"cleavage":57,"cleavagetype":58,"fracturetype":11,"tenacity":59,"commentbreak":11,"opticaltype":60,"opticalsign":11,"opticalalpha":34,"opticalalpha2":34,"opticalalphaerror":11,"opticalbeta":34,"opticalbeta2":34,"opticalbetaerror":11,"opticalgamma":34,"opticalgamma2":34,"opticalgammaerror":11,"opticalomega":34,"opticalomega2":34,"opticalomegaerror":11,"opticalepsilon":34,"opticalepsilon2":34,"opticalepsilonerror":11,"opticaln":61,"opticaln2":62,"opticalnerror":11,"optical2vcalc":34,"optical2vcalc2":34,"optical2vcalcerror":11,"optical2vmeasured":34,"optical2vmeasured2":34,"optical2vmeasurederror":11,"rimin":11,"rimax":11,"opticaldispersion":11,"opticalpleochroism":63,"opticalpleochorismdesc":64,"opticalbirefringence":11,"opticalcomments":65,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":11,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":66,"other":67,"industrial":11,"occurrence":68,"otheroccurrence":69,"type_specimen_store":70,"description_short":71,"aboutname":72,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":73,"reviewed_at":11,"variety_of":11,"varieties":74,"group_members":75,"associates":104,"confused_with":209,"type_localities":210,"occurrence_total":215,"citations":216,"images":274,"structures":486,"synonyms":508,"language_names":509,"wikidata_qid":577,"texts":578},4181,"1:1:4181:8","42d8fefb-8883-4090-90b3-7576fc4dd26d","Villiaumite","Vll",0,"mineral",null,47992,4119,false,"NaF",[17,18],"Na","F",[17,18],"8.1.2",[22,23],"APPROVED","GRANDFATHERED",1908,"1908","3","A","20","9","1","Isometric",32,222,"0","4.6342",4,"Translation gliding with T{011}, t[011], and probably also T{001}, t[011].","Cubic, often rounded crystals; massive, granular.","Carmine red to dark violet masses 1-3 mm in size.",2,2.5,"2.79","2.81","Vitreous","Transparent","White","Dark carmine-red, dark red, light orange, pink","The reddish colours were thought to be due to structural defects, caused by irradiation (Sørensen, 1973; Jahn et al., 2014). However, according to Calas et al. (2021) the red colour comes from metal Na nanoparticles, 2.5–3 nm in diameter. \u003Cbr>\r\nVilliaumite samples began to change color very slowly after being heated above 300 °C in a muffle furnace. Subsequent color changes required heating at increasingly higher temperatures for approximately 48–72 h. Samples of the reddish mineral villiaumite turned orange, pink and finally colorless (at approximately at 430 °C)[[1]].\r\nHeating is accompanied by strong thermoluminescence (Sørensen, 1973).",[50,51,52,53,54],"red","pink","orange","yellow","white",[54],"Dark red to orange and yellow fluorescence under SW and LW UV.","On {001}.","Perfect","brittle","Isotropic","1.327","1.328","Strong","E = yellow\r\nO = pink to deep carmine","Weak anomalous birefringence.","Becomes colourless when heated above 300° (see also commments on colour). Melts to a thin liquid, at the melting point of 993 °C ( Wikepedia) becoming white and opaque on cooling.","Soluble in water. Strong thermoluminescence.","Small miarolytic cavities in nepheline syenite.","Alkalic rocks.","Muséum Nationale d’Histoire Naturelle, Paris, France, number 108.220\u002F6  (cotype).\r\nEcole Nationale Supérieure des Mines, Paris, France, number 51037 (cotype).","The Na analogue of carobbiite.\r\n\r\nWater-soluble and toxic!\r\n\r\nAccording to Calas et al. (2021) the red colour comes from metal Na nanoparticles, 2.5–3 nm in diameter. Similar nanoparticles impart blue colour to halite.","Named by Alfred Lacroix in 1908 after Charles Maxime Villiaume (17 June 1858, Nomexy, Vosges, Grand Est, France - 1920, Vincennes, Val-de-Marne, Île-de-France, France), French explorer and officer in the colonial artillery corps stationed in northern Madagascar, for his help in the acquisition of mineral and rock collections from Madagascar and Guinea. Founder of the Compagnie minière de Guinée, administrator of the Mines de la Haute-Guinée, the Siguiri mines and the Société d'études minières de l’Afrique française. The species was first found in his collection.","2026-03-05 14:37:08",[],[76,83,89,96],{"id":77,"name":78,"entrytype":9,"csystem":31,"ima_formula":79,"mindat_formula":79,"hmin":40,"hmax":41,"dmeas":80,"dcalc":81,"primary_image_id":82},908,"Carobbiite","KF","2.505","2.528",4786,{"id":84,"name":85,"entrytype":9,"csystem":31,"ima_formula":86,"mindat_formula":86,"hmin":87,"hmax":87,"dmeas":34,"dcalc":34,"primary_image_id":88},1749,"Griceite","LiF",4.5,10463,{"id":90,"name":91,"entrytype":9,"csystem":31,"ima_formula":92,"mindat_formula":92,"hmin":41,"hmax":41,"dmeas":93,"dcalc":94,"primary_image_id":95},1804,"Halite","NaCl","2.168","2.165",29829,{"id":97,"name":98,"entrytype":9,"csystem":31,"ima_formula":99,"mindat_formula":99,"hmin":100,"hmax":40,"dmeas":101,"dcalc":102,"primary_image_id":103},3850,"Sylvite","KCl",1.5,"1.993","1.987",30786,[105,114,122,130,139,145,154,162,170,177,185,192,200],{"id":106,"name":107,"entrytype":9,"csystem":108,"ima_formula":109,"mindat_formula":109,"hmin":110,"hmax":110,"dmeas":111,"dcalc":112,"primary_image_id":113},31,"Aegirine","Monoclinic","NaFe\u003Csup>3+\u003C\u002Fsup>Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>",6,"3.5","3.576",257,{"id":115,"name":116,"entrytype":9,"csystem":117,"ima_formula":118,"mindat_formula":118,"hmin":110,"hmax":110,"dmeas":119,"dcalc":120,"primary_image_id":121},1007,"Chkalovite","Orthorhombic","Na\u003Csub>2\u003C\u002Fsub>BeSi\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","2.662","2.70",5427,{"id":123,"name":124,"entrytype":9,"csystem":125,"ima_formula":126,"mindat_formula":126,"hmin":127,"hmax":110,"dmeas":128,"dcalc":34,"primary_image_id":129},1420,"Eudialyte","Trigonal","Na\u003Csub>15\u003C\u002Fsub>Ca\u003Csub>6\u003C\u002Fsub>Fe\u003Csub>3\u003C\u002Fsub>Zr\u003Csub>3\u003C\u002Fsub>Si(Si\u003Csub>25\u003C\u002Fsub>O\u003Csub>73\u003C\u002Fsub>)(O,OH,H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>3\u003C\u002Fsub>(Cl,OH)\u003Csub>2\u003C\u002Fsub>",5,"2.74",8170,{"id":131,"name":132,"entrytype":9,"csystem":108,"ima_formula":133,"mindat_formula":134,"hmin":40,"hmax":135,"dmeas":136,"dcalc":137,"primary_image_id":138},2315,"Lamprophyllite","(SrNa)Ti\u003Csub>2\u003C\u002Fsub>Na\u003Csub>3\u003C\u002Fsub>Ti(Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub>","(Na,Mn\u003Csup>2+\u003C\u002Fsup>)\u003Csub>3\u003C\u002Fsub>(Sr,Na)\u003Csub>2\u003C\u002Fsub>(Ti,Fe\u003Csup>3+\u003C\u002Fsup>)\u003Csub>3\u003C\u002Fsub>(Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>2\u003C\u002Fsub>(OH,O,F)\u003Csub>2\u003C\u002Fsub>",3,"3.44","3.49",30057,{"id":140,"name":141,"entrytype":9,"csystem":108,"ima_formula":142,"mindat_formula":142,"hmin":143,"hmax":40,"dmeas":34,"dcalc":144,"primary_image_id":11},2832,"Nahpoite","Na\u003Csub>2\u003C\u002Fsub>(PO\u003Csub>3\u003C\u002Fsub>OH)",1,"2.58",{"id":146,"name":147,"entrytype":9,"csystem":148,"ima_formula":149,"mindat_formula":149,"hmin":150,"hmax":110,"dmeas":151,"dcalc":152,"primary_image_id":153},2880,"Nepheline","Hexagonal","Na\u003Csub>3\u003C\u002Fsub>K(Al\u003Csub>4\u003C\u002Fsub>Si\u003Csub>4\u003C\u002Fsub>O\u003Csub>16\u003C\u002Fsub>)",5.5,"2.55","2.64",17551,{"id":155,"name":156,"entrytype":9,"csystem":108,"ima_formula":157,"mindat_formula":158,"hmin":127,"hmax":110,"dmeas":159,"dcalc":160,"primary_image_id":161},2883,"Neptunite","KNa\u003Csub>2\u003C\u002Fsub>LiFe\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>Ti\u003Csub>2\u003C\u002Fsub>Si\u003Csub>8\u003C\u002Fsub>O\u003Csub>24\u003C\u002Fsub>","KNa\u003Csub>2\u003C\u002Fsub>Li(Fe\u003Csup>2+\u003C\u002Fsup>)\u003Csub>2\u003C\u002Fsub>Ti\u003Csub>2\u003C\u002Fsub>[Si\u003Csub>4\u003C\u002Fsub>O\u003Csub>12\u003C\u002Fsub>]\u003Csub>2\u003C\u002Fsub>","3.19","3.24",30338,{"id":163,"name":164,"entrytype":9,"csystem":165,"ima_formula":166,"mindat_formula":166,"hmin":87,"hmax":127,"dmeas":167,"dcalc":168,"primary_image_id":169},3141,"Pectolite","Triclinic","NaCa\u003Csub>2\u003C\u002Fsub>Si\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>(OH)","2.84","2.87",18967,{"id":171,"name":172,"entrytype":9,"csystem":165,"ima_formula":173,"mindat_formula":173,"hmin":127,"hmax":150,"dmeas":174,"dcalc":175,"primary_image_id":176},3622,"Serandite","NaMn\u003Csup>2+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>Si\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>(OH)","3.34","3.42",22116,{"id":178,"name":179,"entrytype":9,"csystem":125,"ima_formula":180,"mindat_formula":181,"hmin":40,"hmax":135,"dmeas":182,"dcalc":183,"primary_image_id":184},3629,"Shafranovskite","Na\u003Csub>3\u003C\u002Fsub>K\u003Csub>2\u003C\u002Fsub>(Mn,Fe,Na)\u003Csub>4\u003C\u002Fsub>[Si\u003Csub>9\u003C\u002Fsub>(O,OH)\u003Csub>27\u003C\u002Fsub>](OH)\u003Csub>2\u003C\u002Fsub> · nH\u003Csub>2\u003C\u002Fsub>O","Na\u003Csub>3\u003C\u002Fsub>K\u003Csub>2\u003C\u002Fsub>(Mn,Fe,Na)\u003Csub>4\u003C\u002Fsub>[Si\u003Csub>9\u003C\u002Fsub>(O,OH)\u003Csub>27\u003C\u002Fsub>](OH)\u003Csub>2\u003C\u002Fsub>·nH\u003Csub>2\u003C\u002Fsub>O","2.76","2.83",22156,{"id":186,"name":187,"entrytype":9,"csystem":31,"ima_formula":188,"mindat_formula":188,"hmin":150,"hmax":110,"dmeas":189,"dcalc":190,"primary_image_id":191},3701,"Sodalite","Na\u003Csub>4\u003C\u002Fsub>(Si\u003Csub>3\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>)O\u003Csub>12\u003C\u002Fsub>Cl","2.27","2.31",22539,{"id":193,"name":194,"entrytype":9,"csystem":125,"ima_formula":195,"mindat_formula":196,"hmin":135,"hmax":36,"dmeas":197,"dcalc":198,"primary_image_id":199},4047,"Tuliokite","Na\u003Csub>6\u003C\u002Fsub>BaTh(CO\u003Csub>3\u003C\u002Fsub>)\u003Csub>6\u003C\u002Fsub> · 6H\u003Csub>2\u003C\u002Fsub>O","Na\u003Csub>6\u003C\u002Fsub>BaTh(CO\u003Csub>3\u003C\u002Fsub>)\u003Csub>6\u003C\u002Fsub>·6H\u003Csub>2\u003C\u002Fsub>O","3.15","3.25",24728,{"id":201,"name":202,"entrytype":9,"csystem":165,"ima_formula":203,"mindat_formula":204,"hmin":110,"hmax":205,"dmeas":206,"dcalc":207,"primary_image_id":208},4122,"Ussingite","Na\u003Csub>2\u003C\u002Fsub>AlSi\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>(OH)","Na\u003Csub>2\u003C\u002Fsub>AlSi\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>OH",7,"2.48","2.51",30905,[],[211],{"id":212,"txt":213,"latitude":11,"longitude":11,"country":214},1968,"Rouma Island, Los Archipelago (Los Islands), Conakry Region, Guinea","Guinea",40,[217,220,224,228,232,236,240,244,248,252,256,260,265,270],{"id":218,"year":24,"html":219,"doi":11},16127273,"Lacroix, A. (1908): Sur l'existance du fluorure de sodium cristallisé comme èlèment des syènites nèphèliniques des Îles de Los. Comptes Rendu, Academie des Sciences, Paris: 146(5): 213-216.",{"id":221,"year":222,"html":223,"doi":11},16127274,1921,"Davey (1921): Physical Review, a Journal of Experimental and Theoretical Physics.",{"id":225,"year":226,"html":227,"doi":11},16127275,1923,"Davey (1923): Physical Review, a Journal of Experimental and Theoretical Physics: 21: 143.",{"id":229,"year":230,"html":231,"doi":11},16127276,1927,"Barth, T. & Lunde, G. (1927): Über das Mineral Villiaumit. Centralblatt für Mineralogie, Geologie und Paläontologie, 1927, 57-66 (in German).",{"id":233,"year":234,"html":235,"doi":11},16127277,1953,"Swanson, H.E., Tatge, E. (1953) Standard X-ray Diffraction Powder Patterns. United States Department of Commerce, National Bureau of Standards, Circular 539, 1, 63-64.",{"id":237,"year":238,"html":239,"doi":11},16127278,1970,"Stormer, J.C., Carmichael, I.S.E. (1970): Villiaumite and the occurrence of fluoride minerals in igneous rocks. American Mineralogist: 55: 126-134.",{"id":241,"year":242,"html":243,"doi":11},16127279,1973,"Sørensen E. (1973): On the adsorption of some anionic collectors on fluoride minerals. Journal of Colloid and Interface Science 45, 601-607.",{"id":245,"year":246,"html":247,"doi":11},16127280,1981,"Petersen, O.V. (1981): The first natural crystal of NaF, villiaumite. Neues Jahrbuch für Mineralogie, Monatshefte: 3: 111-113.",{"id":249,"year":250,"html":251,"doi":11},12908384,1990,"Horváth, László, Gault, Robert A. (1990) The Mineralogy of Mont Saint-Hilaire, Quebec. \u003Ci>The Mineralogical Record\u003C\u002Fi>, 21 (4) 281-359",{"id":253,"year":254,"html":255,"doi":11},16967989,2005,"(2005) Villiaumite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fvilliaumite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":257,"year":258,"html":259,"doi":11},16167025,2014,"Jahn, S., von Bezing, L., Wartha, R. (2014) Aris bei Windhoek in Namibia. Mineralien-Welt: 25(1): 84-110 (in German).",{"id":261,"year":262,"html":263,"doi":264},12999884,2021,"Calas, Georges; Galoisy, Laurence; Geisler, Alexis (2021) Sodium nanoparticles in alkali halide minerals: Why is villiaumite red and halite blue? \u003Ci>American Mineralogist\u003C\u002Fi>,  106 (5). 838-842 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-2021-7917'>doi:10.2138\u002Fam-2021-7917\u003C\u002Fa>","10.2138\u002Fam-2021-7917",{"id":266,"year":267,"html":268,"doi":269},16994388,2023,"Chruszcz-Lipska, Katarzyna, Szostak, Elżbieta, Zborowski, Krzysztof Kazimierz (2023) Innovative Structural Characterization of Natural Villiaumite Crystal. \u003Ci>Minerals\u003C\u002Fi>,  13 (12)  \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3390\u002Fmin13121531'>doi:10.3390\u002Fmin13121531\u003C\u002Fa>","10.3390\u002Fmin13121531",{"id":271,"year":267,"html":272,"doi":273},16463719,"Talla, Dominik, Beran, Anton, Škoda, Radek (2023) Natural and artificial OH defect incorporation into fluoride minerals at elevated temperature—a case study of sellaite, villiaumite and fluorite. \u003Ci>Mineralogy and Petrology\u003C\u002Fi>, 117 (2) 359-372 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00710-023-00824-3'>doi:10.1007\u002Fs00710-023-00824-3\u003C\u002Fa>","10.1007\u002Fs00710-023-00824-3",[275,285,292,302,307,315,322,328,335,343,347,354,363,367,375,383,391,398,406,412,419,425,431,438,444,451,457,462,468,477],{"id":276,"source_url":277,"license_code":278,"credit_html":279,"title":280,"description":281,"author":282,"original_width":283,"original_height":284},27470,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9800083","Public domain","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9800083\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite1 - Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada - FOV 1.4 x 1.4 mm\u003C\u002Fdd>\n\u003Cdd>a small but perfect crystal, clearly not just a cleavage fragment.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Modris Baum",671,653,{"id":286,"source_url":287,"license_code":288,"credit_html":289,"title":7,"description":11,"author":11,"original_width":290,"original_height":291},30934,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F119227","CC BY 4.0","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F119227\" rel=\"noopener\">Department of Geology, TalTech\u003C\u002Fa> via Europeana",1000,666,{"id":293,"source_url":294,"license_code":295,"credit_html":296,"title":297,"description":298,"author":299,"original_width":300,"original_height":301},27471,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163628","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163628\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-229832.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Aris Quarries (Ariskop Quarry; Railway Quarry), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAris\" class=\"extiw\" title=\"en:Aris\">Aris\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FWindhoek\" class=\"extiw\" title=\"en:Windhoek\">Windhoek\u003C\u002Fa>, Windhoek District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKhomas_Region\" class=\"extiw\" title=\"en:Khomas Region\">Khomas Region\u003C\u002Fa>, Namibia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-7687.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9 x 5.4 x 5 cm.\u003C\u002Fdd>\n\u003Cdd>A pair of large (up to 2.5 cm) Villiaumite crystals nestled beautifully in a phonolite (a rare volcanic rock) pocket. The Villiaumites are gemmy and have an excellent, uniform orange color. The luster is also excellent. The crystal in the core of the pocket shows natural faces, no cleaves. Ex. Charlie Key Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",480,500,{"id":303,"source_url":304,"license_code":288,"credit_html":305,"title":7,"description":11,"author":11,"original_width":290,"original_height":306},30935,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F44909","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F44909\" rel=\"noopener\">Department of Geology, TalTech\u003C\u002Fa> via Europeana",662,{"id":308,"source_url":309,"license_code":278,"credit_html":310,"title":311,"description":312,"author":282,"original_width":313,"original_height":314},85229,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9799969","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9799969\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite2 - Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa> (FOV 7.1 x 4.7 mm)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada\u003C\u002Fdd>\n\u003Cdd>\u003Ci>Original description:\u003C\u002Fi> This is clearly not euhedral and has an obvious solution cavity\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",800,533,{"id":316,"source_url":317,"license_code":295,"credit_html":318,"title":319,"description":320,"author":299,"original_width":321,"original_height":313},27472,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441604","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441604\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-mrz283a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMont_Saint-Hilaire\" class=\"extiw\" title=\"en:Mont Saint-Hilaire\">Mont Saint-Hilaire\u003C\u002Fa>, Rouville RCM, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMont%C3%A9r%C3%A9gie\" class=\"extiw\" title=\"en:Montérégie\">Montérégie\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FQuebec\" class=\"extiw\" title=\"en:Quebec\">Québec\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-123123.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3 x 2.3 x 1.7 cm\n\u003Cdl>\u003Cdt>Villiaumite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>An exceptionally sharp, colorful, and lustrous crystal that is better for this locality in terms of outright quality, than you would expect. To Martin Zinn from the famous J.R. Jelks collection, known for its rarities and classics.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",634,{"id":323,"source_url":324,"license_code":325,"credit_html":326,"title":7,"description":11,"author":11,"original_width":290,"original_height":327},30936,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179177","CC BY-SA 4.0","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179177\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",750,{"id":329,"source_url":330,"license_code":278,"credit_html":331,"title":332,"description":333,"author":282,"original_width":334,"original_height":284},85230,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9799985","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9799985\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite3 - Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa> - Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada - FOV 1 3\u002F4 x 2 mm",566,{"id":336,"source_url":337,"license_code":295,"credit_html":338,"title":339,"description":340,"author":299,"original_width":341,"original_height":342},27473,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466084","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466084\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-t5128a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Aris Quarries (Ariskop Quarry; Railway Quarry), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAris\" class=\"extiw\" title=\"en:Aris\">Aris\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FWindhoek\" class=\"extiw\" title=\"en:Windhoek\">Windhoek\u003C\u002Fa>, Windhoek District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKhomas_Region\" class=\"extiw\" title=\"en:Khomas Region\">Khomas Region\u003C\u002Fa>, Namibia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-7687.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 6.1 x 5 x 2.8 cm\n\u003Cdl>\u003Cdt>Villiaumite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This comes from an incredible, I would even say UNPRECEDENTED, find for the species featuring incredible orange-red color and GEMMINESS combined with complex crystal structure that taken together makes these crystals superficially resemble a spessartine garnet. This was one of the few decent matrix specimens from the find, as was reported from Munich in the Mineralogical Record (where one specimen I had previously is illustrated). Much of the material was being sold as facet rough and was anyways of poor quality or small, partial crystals. This specimen stands out as an actually somewhat non-ugly matrix piece, and though the crystals are not super-sharp they are nevertheless real crystals, and colorful at that.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",600,446,{"id":344,"source_url":345,"license_code":325,"credit_html":346,"title":7,"description":11,"author":11,"original_width":290,"original_height":327},30937,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179176","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179176\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",{"id":348,"source_url":349,"license_code":278,"credit_html":350,"title":351,"description":352,"author":282,"original_width":353,"original_height":284},24060,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9800223","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9800223\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite5 - Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>. Are these “real” crystals or cleavages? The powdery coating (thermonatrite per the label but not analyzed) suggests that these are actual xls. But it’s hard to be sure with villiaumite so I make no claims. - Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada - FOV 4.5 x 6.7 mm",433,{"id":355,"source_url":356,"license_code":278,"credit_html":357,"title":358,"description":359,"author":360,"original_width":361,"original_height":362},27474,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10689839","Stickpen, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10689839\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-russia.jpg","Villiaumite from Russia. On display at the San Diego County Fair, California, USA.","Stickpen",1292,1095,{"id":364,"source_url":365,"license_code":325,"credit_html":366,"title":7,"description":11,"author":11,"original_width":290,"original_height":327},30938,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179178","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179178\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana",{"id":368,"source_url":369,"license_code":278,"credit_html":370,"title":371,"description":372,"author":282,"original_width":373,"original_height":374},27475,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74734292","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74734292\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-303522.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Aris Quarries (Ariskop Quarry; Railway Quarry), Aris, Windhoek District, Khomas Region, Namibia\u003C\u002Fdd>\n\u003Cdd>FOV 3.1 x 2.3 mm\u003C\u002Fdd>\n\u003Cdd>Thanks to Wilfried Steffens (1990s) MOB coll. Interesting (unusual ?) striated xl\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",968,768,{"id":376,"source_url":377,"license_code":295,"credit_html":378,"title":379,"description":380,"author":299,"original_width":381,"original_height":382},85232,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10145065","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10145065\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-146136.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKhibiny_Massif\" class=\"extiw\" title=\"en:Khibiny Massif\">Khibiny Massif\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKola_Peninsula\" class=\"extiw\" title=\"en:Kola Peninsula\">Kola Peninsula\u003C\u002Fa>, Murmanskaja Oblast', \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Region\" class=\"extiw\" title=\"en:Northern Region\">Northern Region\u003C\u002Fa>, Russia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2680.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.5 x 2.0 x 1.7 cm.\u003C\u002Fdd>\n\u003Cdd>An outstanding specimen from this important locality, featuring seemingly terminated cherry-red villiaumite crystals in a cluster. Although beautiful and seemingly cubic, most specimens of villiaumite of any size are simply cleavage fragments, as a customer pointed out to me. This showy piece may have terminated faces on the front of the piece, however, at least. Villiaumite is a rare sodium fluoride.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",374,400,{"id":384,"source_url":385,"license_code":278,"credit_html":386,"title":387,"description":388,"author":282,"original_width":389,"original_height":390},27476,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74735784","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74735784\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite--429036.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Aris Quarries (Ariskop Quarry; Railway Quarry), Aris, Windhoek District, Khomas Region, Namibia\u003C\u002Fdd>\n\u003Cdd>FOV 2.8 x 2.0 mm\u003C\u002Fdd>\n\u003Cdd>Thanks to Vic Cloete (2008).MOB coll. Viliaumite at Aris has many colors from deep red to pink to orange - sometimes within the same cavity or even the same mass. The interest here however, is the very complex set of faces, many apparently in parallel. They don't look like cleavages or as if they were formed by solution - they seem to have just formed that way. But villiaumite is a tricky beast so I'm not going to claim anything more than that they are very interesting. (Note: The top surface - the one receding into the background - is, in fact, a cleavage.) However, the arrangement is so complex that it's very hard to tell what's going on from a flat (mono) photo.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1527,1039,{"id":392,"source_url":393,"license_code":295,"credit_html":394,"title":395,"description":396,"author":299,"original_width":397,"original_height":327},85233,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159352","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10159352\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-201739.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKola_Peninsula\" class=\"extiw\" title=\"en:Kola Peninsula\">Kola Peninsula\u003C\u002Fa>, Murmanskaja Oblast', \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Region\" class=\"extiw\" title=\"en:Northern Region\">Northern Region\u003C\u002Fa>, Russia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2666.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.6 x 2.0 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>An outstanding large specimen from this important locality, featuring a seemingly very gemmy, terminated, cherry-red villiaumite crystal. Although beautiful and seemingly cubic, most specimens of villiaumite of any size are simply cleavage fragments. This showy piece may have one terminated frontal face, along with the termination. Villiaumite is a rare sodium fluoride.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",526,{"id":399,"source_url":400,"license_code":278,"credit_html":401,"title":402,"description":403,"author":282,"original_width":404,"original_height":405},24061,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74736016","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74736016\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-294765.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada\u003C\u002Fdd>\n\u003Cdd>FOV 4.3 x 6.2 mm\u003C\u002Fdd>\n\u003Cdd>Via Tony Gordian. Some edges are rounded but I think these are genuine xls – as opposed to cleavage planes soaked in water. If you can fuse stereo images, the child photo will provide a clearer view of the xls. The cavity is actually fairly deep. The (overexposed) white stuff is probably thermonatrite, but it may be \"post-mining\". Dec 2016: Added a stereo pair showing a larger and sharper crystal on the specimen\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",2337,3409,{"id":407,"source_url":408,"license_code":295,"credit_html":409,"title":410,"description":298,"author":299,"original_width":301,"original_height":411},85234,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163627","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163627\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-229831.jpg",326,{"id":413,"source_url":414,"license_code":295,"credit_html":415,"title":416,"description":417,"author":299,"original_width":418,"original_height":313},85235,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10438742","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10438742\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-sea77b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Bortolan quarry, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPo%C3%A7os_de_Caldas\" class=\"extiw\" title=\"en:Poços de Caldas\">Poços de Caldas\u003C\u002Fa>, Poços de Caldas plateau, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMinas_Gerais\" class=\"extiw\" title=\"en:Minas Gerais\">Minas Gerais\u003C\u002Fa>, Southeast Region, Brazil (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-69151.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 5.0 x 3.0 x 2.1 cm\n\u003Cdl>\u003Cdt>Villiaumite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Rare, discrete microcrystals of villiaumite, from an old find in Brazil. John White purchased this from Carlos Barbosa in 1978. Such discrete (if small) crystals are extremely rare, both for the species and for Brazil as a source of it, and I believe this was a one-time find. Ex. John White Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",622,{"id":420,"source_url":421,"license_code":295,"credit_html":422,"title":423,"description":417,"author":299,"original_width":424,"original_height":313},85236,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10438744","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10438744\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-sea77a.jpg",543,{"id":426,"source_url":427,"license_code":295,"credit_html":428,"title":429,"description":320,"author":299,"original_width":430,"original_height":313},85237,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441605","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441605\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-mrz283b.jpg",658,{"id":432,"source_url":433,"license_code":295,"credit_html":434,"title":435,"description":436,"author":299,"original_width":313,"original_height":437},54818,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441614","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441614\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-mrz289a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKhibiny_Massif\" class=\"extiw\" title=\"en:Khibiny Massif\">Khibiny Massif\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKola_Peninsula\" class=\"extiw\" title=\"en:Kola Peninsula\">Kola Peninsula\u003C\u002Fa>, Murmanskaja Oblast', \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Region\" class=\"extiw\" title=\"en:Northern Region\">Northern Region\u003C\u002Fa>, Russia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2680.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 6.6 x 5.8 x 4.5 cm\n\u003Cdl>\u003Cdt>Villiaumite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>An outstanding large specimen from this important locality, featuring seemingly terminated villiaumite crystals in a cluster. However, I was wrong in my judgment of this. Marty's label notes the presence of Fersmanite which may be here, as well. Although beautiful and seemingly cubic, most specimens of villiaumite of any size are simply cleavage fragments, as a customer pointed out to me: as for the Villiaumites, it is a common misconception that the \"monoblock cleavages\" from Kola show true crystal faces. They DO NOT. They are in essence parts of single crystals, but come from large \"nests\" of Villiaumite frozen in the pegmatite without open cavities. The Villiaumite was formed very late in the development of the pegmatite often followed by Nahcolite and other alkaline carbonates. There are no good crystal faces on the boundaries between the Villiaumite and the later formed minerals. These facts do not reduce the aesthetics of the Villiaumite specimens. Ex. Martin Zinn Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",756,{"id":439,"source_url":440,"license_code":295,"credit_html":441,"title":442,"description":436,"author":299,"original_width":313,"original_height":443},54819,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441615","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441615\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-mrz289b.jpg",734,{"id":445,"source_url":446,"license_code":295,"credit_html":447,"title":448,"description":449,"author":299,"original_width":450,"original_height":341},85238,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465034","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465034\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-t06-94a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVilliaumite\" class=\"extiw\" title=\"en:Villiaumite\">Villiaumite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Aris Quarries (Ariskop Quarry; Railway Quarry), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAris\" class=\"extiw\" title=\"en:Aris\">Aris\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FWindhoek\" class=\"extiw\" title=\"en:Windhoek\">Windhoek\u003C\u002Fa>, Windhoek District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKhomas_Region\" class=\"extiw\" title=\"en:Khomas Region\">Khomas Region\u003C\u002Fa>, Namibia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-7687.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 0.6 x 0.4 x 0.2 cm\n\u003Cdl>\u003Cdt>Villiaumite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A single, loose, gem crystal of this rare species, from the newest and most significant find for the material in a long time. In fact, it is so unusual for the crystalline form, and the color, that I did not believe the ID was legit til proven 2 years back. This is a very fine single, small but of high quality and obvious gemminess!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",475,{"id":452,"source_url":453,"license_code":295,"credit_html":454,"title":455,"description":436,"author":299,"original_width":382,"original_height":456},54820,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441616","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441616\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-mrz289c.jpg",287,{"id":458,"source_url":459,"license_code":295,"credit_html":460,"title":461,"description":436,"author":299,"original_width":382,"original_height":381},54821,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441618","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441618\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumite-mrz289d.jpg",{"id":463,"source_url":464,"license_code":325,"credit_html":465,"title":466,"description":11,"author":11,"original_width":467,"original_height":290},30121,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179445","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F179445\" rel=\"noopener\">University of Tartu, Natural History Museum\u003C\u002Fa> via Europeana","lomonosovite",937,{"id":469,"source_url":470,"license_code":325,"credit_html":471,"title":472,"description":473,"author":474,"original_width":475,"original_height":476},85240,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=128001876","Reinhard Kraasch, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=128001876\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Villiaumit in Aegirin und Alkalifeldspat (RK 2206 P1880753).jpg","\u003Ca href=\"https:\u002F\u002Fde.wikipedia.org\u002Fwiki\u002FVilliaumit\" class=\"extiw\" title=\"de:Villiaumit\">Villiaumit\u003C\u002Fa> in \u003Ca href=\"https:\u002F\u002Fde.wikipedia.org\u002Fwiki\u002FAegirin\" class=\"extiw\" title=\"de:Aegirin\">Aegirin\u003C\u002Fa> (auch \u003Ci>Ägirin\u003C\u002Fi>) und \u003Ca href=\"https:\u002F\u002Fde.wikipedia.org\u002Fwiki\u002FAlkalifeldspat\" class=\"extiw\" title=\"de:Alkalifeldspat\">Alkalifeldspat\u003C\u002Fa> vom Berg Alluaiw (auch Alluaiv), \u003Ca href=\"https:\u002F\u002Fde.wikipedia.org\u002Fwiki\u002FLowosero-Tundra\" class=\"extiw\" title=\"de:Lowosero-Tundra\">Lowosero\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fde.wikipedia.org\u002Fwiki\u002FHalbinsel_Kola\" class=\"extiw\" title=\"de:Halbinsel Kola\">Halbinsel Kola\u003C\u002Fa>, Russland – ausgestellt im \u003Ca href=\"https:\u002F\u002Fde.wikipedia.org\u002Fwiki\u002FMineralogisches_Museum_W%C3%BCrzburg\" class=\"extiw\" title=\"de:Mineralogisches Museum Würzburg\">Mineralogischen Museum Würzburg\u003C\u002Fa>","Reinhard Kraasch",2869,2150,{"id":478,"source_url":479,"license_code":325,"credit_html":480,"title":481,"description":482,"author":483,"original_width":484,"original_height":485},17465,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=75327217","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=75327217\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Natrophosphate & Villiaumite.jpg","White crystals of the rare phosphate mineral natrophosphate associated to orange villiaumite from the type locality in Rasvumchorr (Rasvumtchorr, Khibiny, Kola, Russian Federation).","David Hospital",770,667,[487,494,499,503],{"id":488,"url":489,"label":490,"formula":491,"spacegroup":492,"year":493},14232,"\u002Fcif\u002F14232.cif","Wyckoff 1963","Na F","F m 3 m",1963,{"id":495,"url":496,"label":497,"formula":491,"spacegroup":492,"year":498},14233,"\u002Fcif\u002F14233.cif","Deshpande 1961",1961,{"id":500,"url":501,"label":502,"formula":491,"spacegroup":492,"year":230},14240,"\u002Fcif\u002F14240.cif","Barth 1927",{"id":504,"url":505,"label":506,"formula":491,"spacegroup":492,"year":507},14241,"\u002Fcif\u002F14241.cif","Bragg 1920",1920,[],[510,514,518,521,525,529,532,536,540,543,547,551,555,558,561,565,569,573],{"lang":511,"names":512},"ca",[513],"vil·liaumita",{"lang":515,"names":516},"cs",[517],"Villiaumit",{"lang":519,"names":520},"de",[517],{"lang":522,"names":523},"es",[524],"Villiaumita",{"lang":526,"names":527},"et",[528],"villiomiit",{"lang":530,"names":531},"eu",[524],{"lang":533,"names":534},"fa",[535],"ویلیومیت",{"lang":537,"names":538},"fr",[539],"villiaumite",{"lang":541,"names":542},"it",[7],{"lang":544,"names":545},"ja",[546],"ビリオム石",{"lang":548,"names":549},"nb",[550],"villiaumitt",{"lang":552,"names":553},"nl",[554],"villiaumiet",{"lang":556,"names":557},"nn",[550],{"lang":559,"names":560},"pl",[517],{"lang":562,"names":563},"pt",[564,7],"villiaumita",{"lang":566,"names":567},"ru",[568],"Виллиомит",{"lang":570,"names":571},"uk",[572],"Вілліоміт",{"lang":574,"names":575},"zh",[576],"氟鹽","Q417455",{"history":11,"applications":11}]