[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:3362":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":23,"key_elements":24,"impurities":11,"cim":25,"ima_status":26,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":28,"discovery_year":29,"strunz10ed1":30,"strunz10ed2":31,"strunz10ed3":32,"strunz10ed4":33,"dana8ed1":34,"dana8ed2":35,"dana8ed3":36,"dana8ed4":37,"csystem":38,"cclass":39,"spacegroup":40,"spacegroupset":41,"a":42,"b":43,"c":44,"alpha":45,"beta":45,"gamma":45,"aerror":46,"berror":46,"cerror":47,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":48,"z":49,"csmetamict":13,"commentcrystal":50,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":51,"hmin":46,"hmax":52,"hardtype":11,"vhnmin":53,"vhnmax":53,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":54,"dmeas2":54,"dcalc":55,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":11,"commentluster":11,"diapheny":11,"streak":11,"colour":56,"commentcolor":57,"colors":58,"streak_colors":11,"luminescence":11,"uv":11,"cleavage":11,"cleavagetype":11,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":60,"opticalsign":11,"opticalalpha":53,"opticalalpha2":53,"opticalalphaerror":11,"opticalbeta":61,"opticalbeta2":53,"opticalbetaerror":11,"opticalgamma":53,"opticalgamma2":53,"opticalgammaerror":11,"opticalomega":53,"opticalomega2":53,"opticalomegaerror":11,"opticalepsilon":53,"opticalepsilon2":53,"opticalepsilonerror":11,"opticaln":53,"opticaln2":53,"opticalnerror":11,"optical2vcalc":53,"optical2vcalc2":53,"optical2vcalcerror":11,"optical2vmeasured":53,"optical2vmeasured2":53,"optical2vmeasurederror":11,"rimin":62,"rimax":62,"opticaldispersion":63,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":64,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":65,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":66,"otheroccurrence":11,"type_specimen_store":67,"description_short":11,"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":72,"confused_with":73,"type_localities":74,"occurrence_total":81,"citations":82,"images":104,"structures":115,"synonyms":122,"language_names":125,"wikidata_qid":145,"texts":146},3362,"1:1:3362:2","8f75858e-ecb3-4dc3-813b-5e6b87906077","Rankamaite","Rkm",0,"mineral",null,120,false,"(Na,K)\u003Csub>3\u003C\u002Fsub>(Ta,Nb,Al)\u003Csub>11\u003C\u002Fsub>(O,OH)\u003Csub>31\u003C\u002Fsub>",[16,17,18,19,20,21,22],"Al","Na","Nb","Ta","O","K","H",[17,19,20],[19],"18.1.7",[27],"APPROVED",1969,"1969","4","D","M","05","8","7","6","1","Orthorhombic",8,52,"Cmmm ","17.224","17.687","3.9361","90",3,7,1199.1,2,"Atencio et al. (2011)","Water-worn pebbles found in heavy mineral concentrates.  Silky, fibrous (asbestiform). The fibers are generally wavy but tufts of straight fibres can be seen in small cavities.",4,"0","5.5","5.84","Creamy-white","In thin sections, appears bluish-grey to brownish.",[59],"white","Biaxial","2.1",2.1,"r \u003C v extreme","Elongation positive.\r\nRefractive indices > 2.10.","Z = c and, X ⊥ c","Alluvial, probably from a lithium pegmatite. Thought to be an alteration of simpsonite.","n.d.","Named after Professor Kalervo Rankama (22 February 1913 Helsinki – 10 March 1995 Helsinki), geochemist, University of Helsinki, Helsinki, Finland. He made major contributions to the geochemistry of tantalum and niobium.","2025-10-31 19:23:26",[],[],[],[],[75],{"id":76,"txt":77,"latitude":78,"longitude":79,"country":80},4316,"Mumba cassiterite gravels, Mumba, Osso, Masisi Territory, North Kivu, DR Congo",-1.4559564,28.8844378,"DR Congo",5,[83,87,91,95,99],{"id":84,"year":28,"html":85,"doi":86},5361068,"von Knorring, O., Vorma, A., Nixon, P.H. (1969) Rankamaite, a new tantalum mineral from Kivu, Congo. \u003Ci>Bulletin of the Geological Society of Finland\u003C\u002Fi>, 41. 47-56 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.17741\u002Fbgsf\u002F41.003'>doi:10.17741\u002Fbgsf\u002F41.003\u003C\u002Fa>","10.17741\u002Fbgsf\u002F41.003",{"id":88,"year":89,"html":90,"doi":11},15962760,1970,"Fleischer, M., Nickel, E.H. (1970) New mineral names. American Mineralogist: 55: 1810-1818.",{"id":92,"year":93,"html":94,"doi":11},16121549,1984,"Nekrasov, I.Y., Chistyakova, N.I., Yevstigneyeva, T.L. (1984) On the relationships of thoreaulite, lithiotantite, rankamaite and cassiterite in rare-element pegmatites of Siberia. Mineralogicheskyi Zhurnal: 6: 42-55.",{"id":96,"year":97,"html":98,"doi":11},16966925,2005,"(2005) Rankamaite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Frankamaite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":100,"year":101,"html":102,"doi":103},396615,2011,"Atencio, D., Filho, R. R. C., Mills, S. J., Coutinho, J. M. V., Honorato, S. B., Ayala, A. P., Ellena, J., de Andrade, M. B. (2011) Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: Crystal chemistry and Rietveld refinement. \u003Ci>American Mineralogist\u003C\u002Fi>,  96 (10) 1455-1460 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2011.3594'>doi:10.2138\u002Fam.2011.3594\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FAM96_1455.pdf' class='refpdflink'>\u003C\u002Fa>","10.2138\u002Fam.2011.3594",[105],{"id":106,"source_url":107,"license_code":108,"credit_html":109,"title":110,"description":111,"author":112,"original_width":113,"original_height":114},20564,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=112814461","CC BY-SA 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=112814461\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Rankamaite.jpg","Yellowish white crystal aggregates of the rare Tantalum mineral rankamachite from the TL in Congo (Mumba Cassiterite Gravels, Mumba, Masisi Mountains, North Kivu, DR Congo). Ex Vandenbroucke Museum collection from Waregem, Belgium.","David Hospital",780,530,[116],{"id":117,"url":118,"label":119,"formula":120,"spacegroup":121,"year":101},11918,"\u002Fcif\u002F11918.cif","Atencio 2011","K1.26 Na2.22 Ta9.11 Nb1.29 Al.6 O31","C 2 2 2",[123,124],"IMA1968-002","Rankamaiet",[126,130,134,138,142],{"lang":127,"names":128},"ca",[129],"rankamaïta",{"lang":131,"names":132},"de",[133],"Rankamait",{"lang":135,"names":136},"es",[137],"Rankamaíta",{"lang":139,"names":140},"eu",[141],"Rankamaita",{"lang":143,"names":144},"it",[7],"Q3930124",{"history":11,"applications":11}]