[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:1480":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":14,"elements":15,"sigelements":19,"key_elements":20,"impurities":11,"cim":21,"ima_status":22,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":25,"discovery_year":11,"strunz10ed1":26,"strunz10ed2":27,"strunz10ed3":28,"strunz10ed4":29,"dana8ed1":30,"dana8ed2":31,"dana8ed3":31,"dana8ed4":31,"csystem":32,"cclass":33,"spacegroup":34,"spacegroupset":35,"a":36,"b":35,"c":37,"alpha":35,"beta":35,"gamma":35,"aerror":11,"berror":11,"cerror":11,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":38,"csmetamict":13,"commentcrystal":39,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":40,"tlform":41,"hmin":42,"hmax":43,"hardtype":11,"vhnmin":35,"vhnmax":35,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":44,"dmeas2":45,"dcalc":46,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":47,"commentluster":11,"diapheny":48,"streak":49,"colour":50,"commentcolor":51,"colors":52,"streak_colors":57,"luminescence":11,"uv":11,"cleavage":58,"cleavagetype":59,"fracturetype":60,"tenacity":61,"commentbreak":11,"opticaltype":62,"opticalsign":11,"opticalalpha":35,"opticalalpha2":35,"opticalalphaerror":11,"opticalbeta":35,"opticalbeta2":35,"opticalbetaerror":11,"opticalgamma":35,"opticalgamma2":35,"opticalgammaerror":11,"opticalomega":35,"opticalomega2":35,"opticalomegaerror":11,"opticalepsilon":35,"opticalepsilon2":35,"opticalepsilonerror":11,"opticaln":63,"opticaln2":64,"opticalnerror":11,"optical2vcalc":35,"optical2vcalc2":35,"optical2vcalcerror":11,"optical2vmeasured":35,"optical2vmeasured2":35,"optical2vmeasurederror":11,"rimin":11,"rimax":11,"opticaldispersion":11,"opticalpleochroism":11,"opticalpleochorismdesc":11,"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":11,"industrial":11,"occurrence":11,"otheroccurrence":67,"type_specimen_store":68,"description_short":69,"aboutname":70,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":71,"reviewed_at":11,"variety_of":11,"varieties":72,"group_members":79,"associates":80,"confused_with":81,"type_localities":87,"occurrence_total":92,"citations":93,"images":130,"structures":165,"synonyms":177,"language_names":183,"wikidata_qid":210,"texts":211},1480,"1:1:1480:5","9d8934a9-00a2-46ab-a093-5e8458aec34a","Fergusonite-(Y)","Fgs-Y",0,"mineral",null,2902,false,"YNbO\u003Csub>4\u003C\u002Fsub>",[16,17,18],"Nb","O","Y",[16,17,18],[16,18],"18.2.1",[23,24],"APPROVED","GRANDFATHERED",1825,"7","G","A","05","8","1","Tetragonal",23,136,"0","5.15","10.089",4,"Commonly metamict","Prismatic to acicular dipyramidal crystals to 20cm.","Crystals, embedded in quartz.",5.5,6.5,"5.6","5.8","5.65","Vitreous,Sub-Metallic,Dull","Opaque","Brown, yellow brown, greenish gray","Grey, yellow, brown","Brownish black when altered, brown in transmitted light.",[53,54,55,56],"gray","yellow","brown","green",[55,54,56,53],"Poor on {111}","Poor\u002FIndistinct","Sub-Conchoidal","brittle","Isotropic","2.05","2.19","Rarely uniaxial","Before the blowpipe, infusible, but it loses its colour and becomes pale greenish-yellow.","Rare earth bearing pegmatites, placer deposits.","No designated type material.","Compare also the chemically similar euxenite-(Y) and nioboaeschynite-(Y).","Named fergusonite after Robert Ferguson (8 September 1769 – 3 December 1840, London, England), Scottish landowner, politician and mineral collector.  The suffix was added in 1987 to conform to the Levinson rule for minerals with essential REE, in this case yttrium.","2026-04-22 13:58:08",[73],{"id":74,"name":75,"entrytype":76,"csystem":11,"ima_formula":11,"mindat_formula":77,"hmin":11,"hmax":11,"dmeas":35,"dcalc":35,"primary_image_id":78},10054,"Risörite",2,"(Y,Er)(Nb,Ti,Ta)(O,OH)\u003Csub>4\u003C\u002Fsub>",8484,[],[],[82],{"id":83,"name":84,"entrytype":9,"csystem":85,"ima_formula":14,"mindat_formula":14,"hmin":42,"hmax":43,"dmeas":46,"dcalc":86,"primary_image_id":11},1463,"Clinofergusonite-(Y)","Monoclinic","5.63",[88],{"id":89,"txt":90,"latitude":11,"longitude":11,"country":91},26938,"Kangeq, Sermersooq Island, Kujalleq, Greenland","Greenland",198,[94,97,100,105,109,113,117,121,125],{"id":95,"year":11,"html":96,"doi":11},16109087,"Soviet Physics – Crystallography: 26(1): 35-37.",{"id":98,"year":25,"html":99,"doi":11},15966247,"Haidinger W (1825) Fergusonite, a new mineral species. The Edinburgh Journal of Science 2, 375-376",{"id":101,"year":102,"html":103,"doi":104},104193,1930,"Machatschki, Felix (1930) Über die Formel des Risörites und Fergusonites. \u003Ci>Zeitschrift für Kristallographie, Mineralogie und Petrographie\u003C\u002Fi>,  72 (1-6). 291-300 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1524\u002Fzkri.1930.72.1.291'>doi:10.1524\u002Fzkri.1930.72.1.291\u003C\u002Fa>","10.1524\u002Fzkri.1930.72.1.291",{"id":106,"year":107,"html":108,"doi":11},522687,1955,"Berman, Joseph (1955) Identification of metamict minerals by X-ray diffraction. \u003Ci>American Mineralogist\u003C\u002Fi>,  40 (9-10). 805-827 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM40\u002FAM40_805.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":110,"year":111,"html":112,"doi":11},16109089,1959,"Komkov, A.I. (1959) The structure of natural fergusonite, and of a polymorphic modification. Soviet Physics - Crystallography, 4, 796-800.",{"id":114,"year":115,"html":116,"doi":11},526347,1974,"Graham, J.; Thornber, M. R. (1974) The crystal chemistry of complex niobium and tantalum oxides. I. Structural classification of MO2 phases. \u003Ci>American Mineralogist\u003C\u002Fi>,  59 (9-10). 1026-1039 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM59\u002FAM59_1026.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":118,"year":119,"html":120,"doi":11},528365,1987,"Nickel, Ernest H., Mandarino, Joseph A. (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature. \u003Ci>American Mineralogist\u003C\u002Fi>,  72 (9-10) 1031-1042 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM72\u002FAM72_1031.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":122,"year":123,"html":124,"doi":11},16964232,2005,"(2005) Fergusonite-(Y). \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Ffergusonite-Y.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":126,"year":127,"html":128,"doi":129},19668984,2025,"Zamiatina, Daria A.; Mandrygina, Darya A.; Mikhaylovskaya, Zoya A.; Bulatov, Vladislav A.; Medvedeva, Elena V.; Zamyatin, Dmitry A. (2025) Metamict fergusonite-(Y) and samarskite-(Y) from the Ilmeny mountains (South urals, Russia): secondary alterations and thermal annealing. \u003Ci>Mineralogy and Petrology\u003C\u002Fi>,  120 (1). 35-54 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00710-025-00954-w'>doi:10.1007\u002Fs00710-025-00954-w\u003C\u002Fa>","10.1007\u002Fs00710-025-00954-w",[131,141,149,157],{"id":132,"source_url":133,"license_code":134,"credit_html":135,"title":136,"description":137,"author":138,"original_width":139,"original_height":140},8479,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142156","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142156\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Fergusonite-(Y)-135270.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFergusonite\" class=\"extiw\" title=\"en:Fergusonite\">Fergusonite-(Y)\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Ambalabe pegmatite, Manapa pegmatite Field, Betafo District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVakinankaratra\" class=\"extiw\" title=\"en:Vakinankaratra\">Vakinankaratra Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntananarivo_Province\" class=\"extiw\" title=\"en:Antananarivo Province\">Antananarivo Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-157484.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.3 x 3.0 x 2.3 cm.\u003C\u002Fdd>\n\u003Cdd>Sharp, lustrous, black crystals to 1.0 cm in parallel-growth very nicely set on a glassy cleavage of banded smoky quartz.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",438,476,{"id":142,"source_url":143,"license_code":134,"credit_html":144,"title":145,"description":146,"author":138,"original_width":147,"original_height":148},8480,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142157","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142157\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Fergusonite-(Y)-135271.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFergusonite\" class=\"extiw\" title=\"en:Fergusonite\">Fergusonite-(Y)\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Ambalabe pegmatite, Manapa pegmatite Field, Betafo District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVakinankaratra\" class=\"extiw\" title=\"en:Vakinankaratra\">Vakinankaratra Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntananarivo_Province\" class=\"extiw\" title=\"en:Antananarivo Province\">Antananarivo Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-157484.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.3 x 3.0 x 2.3 cm.\u003C\u002Fdd>\n\u003Cdd>Very sharp, lustrous, black crystals to 1.0 cm in parallel-growth very nicely set on a glassy cleavage of banded smoky quartz.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",389,345,{"id":150,"source_url":151,"license_code":134,"credit_html":152,"title":153,"description":154,"author":138,"original_width":155,"original_height":156},8481,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10149529","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10149529\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Fergusonite-(Y)-169881.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFergusonite\" class=\"extiw\" title=\"en:Fergusonite\">Fergusonite-(Y)\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: J.G. Gole Quarry, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMadawaska\" class=\"extiw\" title=\"en:Madawaska\">Madawaska\u003C\u002Fa>, Murchison Township, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNipissing_District,_Ontario\" class=\"extiw\" title=\"en:Nipissing District, Ontario\">Nipissing District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOntario\" class=\"extiw\" title=\"en:Ontario\">Ontario\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-14666.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.8 x 1.6 x 1.1 cm.\u003C\u002Fdd>\n\u003Cdd>This fine crystallized example of a rare-earth species consists of a columnar, tetragonal, mottled gray-brown crystal on a bit of matrix, 3.0 cm in length.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",247,400,{"id":158,"source_url":159,"license_code":134,"credit_html":160,"title":161,"description":162,"author":138,"original_width":163,"original_height":164},8483,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167102","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167102\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Fergusonite-(Y)-249776.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFergusonite\" class=\"extiw\" title=\"en:Fergusonite\">Fergusonite-(Y)\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMadawaska_Mine\" class=\"extiw\" title=\"en:Madawaska Mine\">Madawaska Mine (Faraday Mine)\u003C\u002Fa>, Faraday Township, Bancroft District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHastings_County,_Ontario\" class=\"extiw\" title=\"en:Hastings County, Ontario\">Hastings County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOntario\" class=\"extiw\" title=\"en:Ontario\">Ontario\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-542.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 5.7 x 2.5 x 1.4 cm.\u003C\u002Fdd>\n\u003Cdd>A huge crystal for this species, by any standard. Fergusonite is a very strange niobium REE-species, and usually crystals are small. This is a tall, elegant and absolutely beautiful example of this species compared to other specimens I have seen. Ex. John White Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",423,800,[166,172],{"id":167,"url":168,"label":169,"formula":170,"spacegroup":171,"year":111},4485,"\u002Fcif\u002F4485.cif","Komkov 1959 · (Y.85 Yb.15) Nb O4 (1)","(Y.85 Yb.15) Nb O4","I 41\u002Fa",{"id":173,"url":174,"label":175,"formula":170,"spacegroup":176,"year":111},4486,"\u002Fcif\u002F4486.cif","Komkov 1959 · (Y.85 Yb.15) Nb O4 (2)","I 1 2 1",[178,179,180,181,182],"Fergusoniet-(Y)","α-Fergusonit","α-Fergusonita","α-Fergusonite","β-Fergusonit-(Y)",[184,189,193,197,201,206],{"lang":185,"names":186},"ca",[187,188],"Fergusonita-","fergusonita-(Y)",{"lang":190,"names":191},"de",[192],"Fergusonit-(Y)",{"lang":194,"names":195},"eu",[187,196],"Fergusonita-(Y)",{"lang":198,"names":199},"it",[200,7],"Fergusonite-",{"lang":202,"names":203},"nn",[204,205],"Fergusonitt-","Fergusonitt-(Y)",{"lang":207,"names":208},"zh",[209],"褐钇铌矿","Q3742784",{"history":11,"applications":11}]