[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:53754":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":11,"ima_status":21,"ima_notes":11,"ima_history":11,"approval_year":23,"publication_year":24,"discovery_year":11,"strunz10ed1":25,"strunz10ed2":26,"strunz10ed3":27,"strunz10ed4":28,"dana8ed1":11,"dana8ed2":11,"dana8ed3":11,"dana8ed4":11,"csystem":29,"cclass":30,"spacegroup":31,"spacegroupset":32,"a":33,"b":11,"c":34,"alpha":11,"beta":11,"gamma":11,"aerror":35,"berror":11,"cerror":36,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":37,"z":38,"csmetamict":13,"commentcrystal":11,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":39,"hmin":40,"hmax":40,"hardtype":35,"vhnmin":11,"vhnmax":11,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":41,"dmeas":11,"dmeas2":11,"dcalc":42,"dmeaserror":11,"dcalcerror":11,"commentdense":43,"lustre":11,"lustretype":44,"commentluster":11,"diapheny":45,"streak":46,"colour":47,"commentcolor":11,"colors":48,"streak_colors":52,"luminescence":11,"uv":53,"cleavage":54,"cleavagetype":55,"fracturetype":56,"tenacity":57,"commentbreak":11,"opticaltype":58,"opticalsign":59,"opticalalpha":11,"opticalalpha2":11,"opticalalphaerror":11,"opticalbeta":11,"opticalbeta2":11,"opticalbetaerror":11,"opticalgamma":11,"opticalgamma2":11,"opticalgammaerror":11,"opticalomega":60,"opticalomega2":11,"opticalomegaerror":61,"opticalepsilon":62,"opticalepsilon2":11,"opticalepsilonerror":61,"opticaln":11,"opticaln2":11,"opticalnerror":11,"optical2vcalc":11,"optical2vcalc2":11,"optical2vcalcerror":11,"optical2vmeasured":11,"optical2vmeasured2":11,"optical2vmeasurederror":11,"rimin":63,"rimax":64,"opticaldispersion":11,"opticalpleochroism":65,"opticalpleochorismdesc":11,"opticalbirefringence":11,"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":66,"industrial":11,"occurrence":67,"otheroccurrence":11,"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":73,"associates":74,"confused_with":75,"type_localities":76,"occurrence_total":83,"citations":84,"images":100,"structures":101,"synonyms":102,"language_names":105,"wikidata_qid":116,"texts":117},53754,"1:1:53754:6","6908f82e-42f8-4306-b9a5-dd618fa54657","Percleveite-(La)","Pcv-La",0,"mineral",null,1,false,"La\u003Csub>2\u003C\u002Fsub>Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>",[16,17,18],"La","Si","O",[16,17,18],[16],[22],"APPROVED",2019,2020,"9","B","C","35","Tetragonal",22,132,"0","6.8482","24.8550",3,13,1165.64,8,"Isolated anhedral grains commonly up to 0.2 × 0.4 mm and very rarely up to 1 × 1 mm.",6,"Based on scratch tests","5.094","Calculated from the empirical formula","Greasy","Transparent","White","Very pale yellow to colourless in thin fragments to light yellow in aggregates",[49,50,51],"yellow","colorless","white",[51],"Does not fluoresce under ultraviolet light.","Imperfect {001}","Imperfect\u002FFair","Irregular\u002FUneven","brittle","Uniaxial","+","1.825",10,"1.835",1.825,1.835,"Non-pleochroic","Does not react with either cold hydrochloric or nitric acids. ","Polymineralic REE-bearing nodules","In the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5362\u002F1","The La-dominant analogue of percleveite-(Ce).","For being the La-dominant analogue of percleveite-(Ce).\r\n\r\nIn honour of Per Teodor Cleve (10 February 1840, Stockholm, Sweden - 18 June 1905, Uppsala, Sweden) - Swedish chemist, biologist, mineralogist, and oceanographer. He is best known for his discovery of the chemical elements holmium and thulium. Cleve earned his BSc and PhD from Uppsala University in 1863 and 1868, respectively. After receiving his PhD, he became an assistant professor of chemistry at the university. He later became professor of general and agricultural chemistry. In 1874, he theorised that didymium was in fact two elements; this theory was confirmed in 1885 when Carl Auer von Welsbach discovered neodymium and praseodymium.\r\n\r\nIn 1879 Cleve discovered holmium and thulium. His other contributions to chemistry include the discovery of aminonaphthalenesulfonic acids, also known as Cleve's acids. From 1890 on he focused on biological studies. He developed a method of determining the age and order of late glacial and postglacial deposits from the types of diatom fossils in the deposits, and wrote a seminal text in the field of oceanography.","2025-08-11 12:15:21",[],[],[],[],[77],{"id":78,"txt":79,"latitude":80,"longitude":81,"country":82},23266,"Mochalin Log, Kyshtym, Chelyabinsk Oblast, Russia",55.8116667,60.5627778,"Russia",2,[85,89,93,97],{"id":86,"year":23,"html":87,"doi":88},16119213,"Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2019) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 51. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  31 (5-6) 1099-1104 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002Fejm\u002F2019\u002F0031-2894'>doi:10.1127\u002Fejm\u002F2019\u002F0031-2894\u003C\u002Fa>","10.1127\u002Fejm\u002F2019\u002F0031-2894",{"id":90,"year":24,"html":91,"doi":92},4564552,"Kasatkin, Anatoly V., Zubkova, Natalia V., Pekov, Igor V., Chukanov, Nikita V., Škoda, Radek, Agakhanov, Atali A., Belakovskiy, Dmitriy I., Ksenofontov, Dmitriy A., Plášil, Jakub, Kuznetsov, Aleksey M., Britvin, Sergey N., Pushcharovsky, Dmitry Yu. (2020) The mineralogy of the historical Mochalin Log \u003Ci>REE\u003C\u002Fi> deposit, South Urals, Russia. Part III. Percleveite-(La), La\u003Csub>2\u003C\u002Fsub>Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>, a new \u003Ci>REE\u003C\u002Fi> disilicate mineral. \u003Ci>Mineralogical Magazine\u003C\u002Fi>, 84 (6) 913-920 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fmgm.2020.81'>doi:10.1180\u002Fmgm.2020.81\u003C\u002Fa>","10.1180\u002Fmgm.2020.81",{"id":94,"year":95,"html":96,"doi":11},16142741,2022,"webmineral.ru (2022) \u003Ca target='_blank' rel='nofollow' href='https:\u002F\u002Fwebmineral.ru\u002Fminerals\u002Fitem.php?id=215704'>https:\u002F\u002Fwebmineral.ru\u002Fminerals\u002Fitem.php?id=215704\u003C\u002Fa>",{"id":98,"year":95,"html":99,"doi":11},16966634,"(2022) Percleveite-(La). \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fhandbookofmineralogy.org\u002Fpdfs\u002FPercleveite-La.pdf' class='refpdflink'>\u003C\u002Fa>",[],[],[103,104],"IMA2019-037","Percleveiet-(La)",[106,111],{"lang":107,"names":108},"ca",[109,110],"Percleveïta-","percleveïta-(La)",{"lang":112,"names":113},"de",[114,115],"IMA 2019-037","Percleveit-(La)","Q76769471",{"history":11,"applications":11}]