[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:3863":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":22,"key_elements":23,"impurities":11,"cim":24,"ima_status":25,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":11,"discovery_year":28,"strunz10ed1":29,"strunz10ed2":30,"strunz10ed3":31,"strunz10ed4":32,"dana8ed1":33,"dana8ed2":34,"dana8ed3":35,"dana8ed4":36,"csystem":37,"cclass":38,"spacegroup":11,"spacegroupset":39,"a":40,"b":39,"c":41,"alpha":39,"beta":39,"gamma":39,"aerror":11,"berror":11,"cerror":11,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":11,"csmetamict":14,"commentcrystal":42,"twinning":43,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":11,"hmin":44,"hmax":45,"hardtype":11,"vhnmin":39,"vhnmax":39,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":46,"dmeas2":46,"dcalc":39,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":47,"lustretype":47,"commentluster":11,"diapheny":48,"streak":49,"colour":50,"commentcolor":11,"colors":51,"streak_colors":54,"luminescence":11,"uv":55,"cleavage":56,"cleavagetype":57,"fracturetype":58,"tenacity":59,"commentbreak":11,"opticaltype":60,"opticalsign":61,"opticalalpha":39,"opticalalpha2":39,"opticalalphaerror":11,"opticalbeta":39,"opticalbeta2":39,"opticalbetaerror":11,"opticalgamma":39,"opticalgamma2":39,"opticalgammaerror":11,"opticalomega":62,"opticalomega2":39,"opticalomegaerror":11,"opticalepsilon":63,"opticalepsilon2":39,"opticalepsilonerror":11,"opticaln":39,"opticaln2":39,"opticalnerror":11,"optical2vcalc":39,"optical2vcalc2":39,"optical2vcalcerror":11,"optical2vmeasured":39,"optical2vmeasured2":39,"optical2vmeasurederror":11,"rimin":64,"rimax":65,"opticaldispersion":11,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":66,"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":11,"industrial":11,"occurrence":11,"otheroccurrence":11,"type_specimen_store":11,"description_short":67,"aboutname":68,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":69,"reviewed_at":11,"variety_of":11,"varieties":70,"group_members":71,"associates":78,"confused_with":79,"type_localities":80,"occurrence_total":87,"citations":88,"images":144,"structures":163,"synonyms":176,"language_names":187,"wikidata_qid":268,"texts":269},3863,"1:1:3863:4","33da88cf-5c98-4301-bbe9-2d7b62a1705a","Magnesiotaaffeite-2N’2S","Mtf-2N'2S",0,"mineral",null,56071,295,false,"Mg\u003Csub>3\u003C\u002Fsub>Al\u003Csub>8\u003C\u002Fsub>BeO\u003Csub>16\u003C\u002Fsub>","Mg\u003Csub>3\u003C\u002Fsub>BeAl\u003Csub>8\u003C\u002Fsub>O\u003Csub>16\u003C\u002Fsub>",[18,19,20,21],"Al","Be","Mg","O",[18,19,20,21],[19],"7.4.5",[26,27],"APPROVED","GRANDFATHERED","1951","4","F","C","25","7","2","11","1","Hexagonal",20,"0","5.68","18.33","New polytype (Malcherek & Schlüter, 2016): trigonal, P-3m1, a = 5.6788(3), c = 18.3368(14) Å, V = 512.11 Å3, Z = 2.","By reflection on (0001)?",8,8.5,"3.605","Vitreous","Transparent","White","White, green",[52,53],"white","green",[52],"Sometimes fluoresces weak red 365nm LW UV, pale yellow to white in 254nm SW UV","Fair {001}","Imperfect\u002FFair","Conchoidal,Sub-Conchoidal","brittle","Uniaxial","+","1.722","1.777",1.722,1.777,"0.05","Taaffeite Group.\r\n\r\nThe stacking of the spinel-type (Mg2Al4O8) and nolanite-type (BeMgAl4O8) modules is N'SN'S. Malcherek & Schlüter (2016) describe a new polytype of the mineral, Magnesiotaaffeite-2N’2S2, with N'SSN'' stacking sequence; this new polyt...","Named taaffeite in honor of Count Edward Charles Richard Taaffe, gemologist of Dublin (1898, Bohemia, Austria-Hungary - 1967, Dublin, Ireland), who discovered the mineral in 1945.  It was the first case of a new mineral discovered as a facetted gem.  The suffix was added by Armbruster et al. (2002) to indicate the polysome.","2026-04-12 17:10:43",[],[72],{"id":73,"name":74,"entrytype":9,"csystem":75,"ima_formula":76,"mindat_formula":76,"hmin":44,"hmax":45,"dmeas":39,"dcalc":39,"primary_image_id":77},2816,"Magnesiotaaffeite-6N’3S","Trigonal","Mg\u003Csub>2\u003C\u002Fsub>BeAl\u003Csub>6\u003C\u002Fsub>O\u003Csub>12\u003C\u002Fsub>",15110,[],[],[81],{"id":82,"txt":83,"latitude":84,"longitude":85,"country":86},3148,"Niriella (Niri-Ella), Gem gravels, Ratnapura, Ratnapura District, Sabaragamuwa Province, Sri Lanka",6.6332524,80.361026,"Sri Lanka",16,[89,94,98,103,106,110,115,119,124,129,134,139],{"id":90,"year":91,"html":92,"doi":93},4390,1951,"Anderson, B. W., Payne, C. J., Claringbull, G. F. (1951) Taaffeite, a new beryllium mineral, found as a cut gemstone. \u003Ci>Mineralogical Magazine and Journal of the Mineralogical Society\u003C\u002Fi>,  29 (215) 765-772 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1951.029.215.03'>doi:10.1180\u002Fminmag.1951.029.215.03\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_29\u002F29-215-765.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1951.029.215.03",{"id":95,"year":96,"html":97,"doi":11},16125011,1975,"Kozhevnikov et al. (1975) First taaffeite in the USSR. Dokl. Akad. Nauk, SSSR, Earth Sci. Sect.: 224: 120-121.",{"id":99,"year":100,"html":101,"doi":102},1080458,1983,"Schmetzer, Karl (1983) Taaffeite or Taprobanite—A Problem of Mineralogical Nomenclature. \u003Ci>The Journal of Gemmology\u003C\u002Fi>,  18 (7) 623-634 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.15506\u002Fjog.1983.18.7.623'>doi:10.15506\u002Fjog.1983.18.7.623\u003C\u002Fa>","10.15506\u002Fjog.1983.18.7.623",{"id":104,"year":100,"html":105,"doi":11},16118000,"Nuber, B., Schmetzer, K. (1983) Crystal structures of ternary Be-Mg-Al oxides: taaffeite, BeMg3Al8O16, and musgravite, BeMg2Al6O12. Neues Jahrbuch für Mineralogie, Monatshefte: 1983: 393-402.",{"id":107,"year":100,"html":108,"doi":109},18462586,"Schmetzer, K. (1983) Crystal chemistry of natural Be-Mg-Al-oxides: taaffeite, taprobanite, musgravite. \u003Ci>Neues Jahrbuch für Mineralogie - Abhandlungen\u003C\u002Fi>,  146 (1). 15-28 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002Fnjma\u002F146\u002F1983\u002F15'>doi:10.1127\u002Fnjma\u002F146\u002F1983\u002F15\u003C\u002Fa>","10.1127\u002Fnjma\u002F146\u002F1983\u002F15",{"id":111,"year":112,"html":113,"doi":114},8431193,1984,"Guinier, A., Bokij, G. B., Boll-Dornberger, K., Cowley, J. M., Ďurovič, S., Jagodzinski, H., Krishna, P., de Wolff, P. M., Zvyagin, B. B., Cox, D. E., et al. (1984) Nomenclature of polytype structures. Report of the International Union of Crystallography Ad hoc Committee on the Nomenclature of Disordered, Modulated and Polytype Structures. \u003Ci>Acta Crystallographica Section A Foundations of Crystallography\u003C\u002Fi>,  40 (4). 399-404 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs0108767384000842'>doi:10.1107\u002Fs0108767384000842\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Fjournals.iucr.org\u002Fa\u002Fissues\u002F1984\u002F04\u002F00\u002Fa23090\u002Fa23090.pdf' class='refpdflink'>\u003C\u002Fa>","10.1107\u002Fs0108767384000842",{"id":116,"year":117,"html":118,"doi":11},12908505,1991,"Kampf, Anthony R. (1991) Taaffeite Crystals. \u003Ci>The Mineralogical Record\u003C\u002Fi>, 22 (5) 343-347",{"id":120,"year":121,"html":122,"doi":123},531732,2000,"Schmetzer, Karl, Kiefert, Lore, Bernhardt, Heinz-Jürgen (2000) Purple to Purplish Red Chromium-Bearing Taaffeites. \u003Ci>Gems & Gemology\u003C\u002Fi>,  36 (1) 50-58 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.5741\u002Fgems.36.1.50'>doi:10.5741\u002Fgems.36.1.50\u003C\u002Fa>","10.5741\u002Fgems.36.1.50",{"id":125,"year":126,"html":127,"doi":128},128096,2002,"Armbruster, Thomas (2002) Revised nomenclature of högbomite, nigerite, and taaffeite minerals. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  14 (2) 389-395 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002F0935-1221\u002F2002\u002F0014-0389'>doi:10.1127\u002F0935-1221\u002F2002\u002F0014-0389\u003C\u002Fa>","10.1127\u002F0935-1221\u002F2002\u002F0014-0389",{"id":130,"year":131,"html":132,"doi":133},1081526,2005,"Schmetzer, Karl, Kiefert, Lore, Bernhardt, Heinz-Jürgen, Burford, Murray, Gunasekara, Dunil Palitha (2005) Iron- and zinc-rich gem-quality taaffeites from Sri Lanka. \u003Ci>The Journal of Gemmology\u003C\u002Fi>,  29 (5) 290-298 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.15506\u002Fjog.2005.29.5.290'>doi:10.15506\u002Fjog.2005.29.5.290\u003C\u002Fa>","10.15506\u002Fjog.2005.29.5.290",{"id":135,"year":136,"html":137,"doi":138},64579,2008,"Bernhard, F., Hauzenberger, C., Walter, F., Kristiansen, R. (2008) Pseudosinhalite, magnesiotaaffeite-6N'3S and magnesiotaaffeite-2N'2S as replacement products of spinel in dolomite marble from Stubenberg, Styria, Austria. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  46 (5) 1195-1205 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3749\u002Fcanmin.46.5.1195'>doi:10.3749\u002Fcanmin.46.5.1195\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FCM46_1195.pdf' class='refpdflink'>\u003C\u002Fa>","10.3749\u002Fcanmin.46.5.1195",{"id":140,"year":141,"html":142,"doi":143},8499479,2016,"Malcherek, Thomas; Schlüter, Jochen (2016) Crystal structure of Cr-bearing Mg\u003Csub>3\u003C\u002Fsub>BeAl\u003Csub>8\u003C\u002Fsub>O\u003Csub>16\u003C\u002Fsub>, a new polytype of magnesiotaaffeite-2\u003Ci>N\u003C\u002Fi>′2\u003Ci>S\u003C\u002Fi>. \u003Ci>Acta Crystallographica Section E Crystallographic Communications\u003C\u002Fi>,  72 (7). 1060-1063 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs2056989016010215'>doi:10.1107\u002Fs2056989016010215\u003C\u002Fa>","10.1107\u002Fs2056989016010215",[145,155],{"id":146,"source_url":147,"license_code":148,"credit_html":149,"title":150,"description":151,"author":152,"original_width":153,"original_height":154},15107,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175405","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175405\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Magnesiotaaffeite-2N2S-53105.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMagnesiotaaffeite-2N%272S\" class=\"extiw\" title=\"en:Magnesiotaaffeite-2N'2S\">Magnesiotaaffeite-2N'2S\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRatnapura\" class=\"extiw\" title=\"en:Ratnapura\">Ratnapura\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRatnapura_District\" class=\"extiw\" title=\"en:Ratnapura District\">Ratnapura District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSabaragamuwa_Province\" class=\"extiw\" title=\"en:Sabaragamuwa Province\">Sabaragamuwa Province\u003C\u002Fa>, Sri Lanka (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3145.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Taaffeeite was an odd story - a gem crystal species first identified from gem rough material, rather than from a crystal. It was a long time before anybody found a crystal to work with, and today they are still extremely rare, probably the rarest and most desirable of the various gem species found in Sri Lanka. This remarkable floater, complete hexagonal crystal is considered by the gem trade experts , Bill Pinch, and others to whom i showed it at Tucson to to be the world's best yet known for species. It would also cut one of the largest known stones and perhaps the best, as it has good uniform purple color. Most specimens are tiny broken chunks, or the occasionally fine transparent crystal with SOME faces. This is COMPLETE all around. It is so remarkable, it is off the charts. The crystal's rear face was polished slightly for a refractive index test , just to be sure of its verification (this is an important test for the species). 1.3 x 1.3 x 0.6 cm , 9.63 carats     This Photo was Mindat.org Photo of the Day - 4th Oct 2008\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",400,348,{"id":156,"source_url":157,"license_code":148,"credit_html":158,"title":159,"description":160,"author":152,"original_width":161,"original_height":162},15108,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175648","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175648\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Magnesiotaaffeite-2N2S-76500.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMagnesiotaaffeite-2N%272S\" class=\"extiw\" title=\"en:Magnesiotaaffeite-2N'2S\">Magnesiotaaffeite-2N'2S\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRatnapura\" class=\"extiw\" title=\"en:Ratnapura\">Ratnapura\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRatnapura_District\" class=\"extiw\" title=\"en:Ratnapura District\">Ratnapura District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSabaragamuwa_Province\" class=\"extiw\" title=\"en:Sabaragamuwa Province\">Sabaragamuwa Province\u003C\u002Fa>, Sri Lanka (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3145.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A rare full crystal with nice lavender color! and complete! Taaffeeite was an odd story - a gem crystal species first identified from gem rough material, rather than from a crystal. It was a long time before anybody found a crystal to work with, and today they are still extremely rare, probably the rarest and most desirable of the various gem species found in Sri Lanka. This remarkable floater, complete hexagonal crystal is extremely fine and GEMMY. Most specimens are tiny broken chunks, or the occasionally fine transparent crystal with SOME faces. This is remarkable for the quality ,and would cut a small gemstone with high value. it has been analyzed, for confirmation. 5 x 4 x 2.5 mm (1.47 carats)\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",513,600,[164,171],{"id":165,"url":166,"label":167,"formula":168,"spacegroup":169,"year":170},8207,"\u002Fcif\u002F8207.cif","Yang 2012","Be Fe.885 Mg1.73 Sn.063 Zn.322 Al8 O16","P 63 m c",2012,{"id":172,"url":173,"label":174,"formula":175,"spacegroup":169,"year":100},8208,"\u002Fcif\u002F8208.cif","Nuber 1983","Mg3 Al8 Be O16",[177,178,179,180,181,182,183,184,185,186],"Bemagalit","Bemagalita","Bemagalite","Magnesiotaaffeiet-2N’2S","Magnesiotaaffeit-2N’2S","Magnesiotaaffeite-2N2S","Taaffeita","Taprobanit","Taprobanita","Taprobanite",[188,192,196,200,204,208,212,216,220,224,229,233,237,241,244,250,253,259,263],{"lang":189,"names":190},"ar",[191],"تافيت",{"lang":193,"names":194},"ca",[195],"magnesiotaaffeïta-2N'2S",{"lang":197,"names":198},"cs",[199],"Taaffeit",{"lang":201,"names":202},"de",[203],"Magnesiotaaffeit-2N'2S",{"lang":205,"names":206},"eu",[207],"Magnesiotaaffeita-2N’2S",{"lang":209,"names":210},"fa",[211],"تافیت",{"lang":213,"names":214},"fi",[215],"Taafeiitti",{"lang":217,"names":218},"he",[219],"טאפיט",{"lang":221,"names":222},"hi",[223],"टैफिट",{"lang":225,"names":226},"it",[227,228],"magnesiotaaffeite-2N'2S","magnesiotaaffeite-2N2S",{"lang":230,"names":231},"ja",[232],"ターフェアイト",{"lang":234,"names":235},"mk",[236],"Тафеит",{"lang":238,"names":239},"nn",[240],"Taaffeitt",{"lang":242,"names":243},"pl",[199],{"lang":245,"names":246},"ru",[247,248,249],"магнезиотааффеит-2N2S","тааффеит","таффеит",{"lang":251,"names":252},"sv",[199],{"lang":254,"names":255},"uk",[256,257,258],"магнезіотааффеїт-2N'2S","Магно-таафеїт-2N’2S","тааффеїт",{"lang":260,"names":261},"vi",[262],"Taaffeite",{"lang":264,"names":265},"zh",[266,267],"塔菲石","鈹鎂晶石","Q3843301",{"history":11,"applications":11}]