[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:46639":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":15,"ima_formula":16,"elements":17,"sigelements":24,"key_elements":25,"impurities":11,"cim":11,"ima_status":26,"ima_notes":11,"ima_history":28,"approval_year":29,"publication_year":30,"discovery_year":11,"strunz10ed1":31,"strunz10ed2":32,"strunz10ed3":33,"strunz10ed4":34,"dana8ed1":35,"dana8ed2":35,"dana8ed3":35,"dana8ed4":35,"csystem":36,"cclass":37,"spacegroup":38,"spacegroupset":35,"a":39,"b":11,"c":40,"alpha":11,"beta":11,"gamma":11,"aerror":41,"berror":11,"cerror":42,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":43,"z":44,"csmetamict":13,"commentcrystal":45,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":46,"tlform":47,"hmin":11,"hmax":11,"hardtype":11,"vhnmin":11,"vhnmax":11,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":11,"dmeas2":11,"dcalc":48,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":49,"commentluster":11,"diapheny":50,"streak":51,"colour":52,"commentcolor":11,"colors":53,"streak_colors":56,"luminescence":11,"uv":57,"cleavage":58,"cleavagetype":59,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":11,"opticalsign":11,"opticalalpha":11,"opticalalpha2":11,"opticalalphaerror":11,"opticalbeta":11,"opticalbeta2":11,"opticalbetaerror":11,"opticalgamma":11,"opticalgamma2":11,"opticalgammaerror":11,"opticalomega":11,"opticalomega2":11,"opticalomegaerror":11,"opticalepsilon":11,"opticalepsilon2":11,"opticalepsilonerror":11,"opticaln":11,"opticaln2":11,"opticalnerror":11,"optical2vcalc":11,"optical2vcalc2":11,"optical2vcalcerror":11,"optical2vmeasured":11,"optical2vmeasured2":11,"optical2vmeasurederror":11,"rimin":11,"rimax":11,"opticaldispersion":11,"opticalpleochroism":11,"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":11,"industrial":11,"occurrence":60,"otheroccurrence":11,"type_specimen_store":61,"description_short":62,"aboutname":63,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":64,"reviewed_at":11,"variety_of":11,"varieties":65,"group_members":66,"associates":67,"confused_with":68,"type_localities":69,"occurrence_total":76,"citations":77,"images":95,"structures":96,"synonyms":97,"language_names":100,"wikidata_qid":117,"texts":118},46639,"1:1:46639:0","7953e63b-aabe-4113-b421-5c57a504427a","Melcherite","Mlh",0,"mineral",null,11,false,"Ba\u003Csub>2\u003C\u002Fsub>Na\u003Csub>2\u003C\u002Fsub>Mg[Nb\u003Csub>6\u003C\u002Fsub>O\u003Csub>19\u003C\u002Fsub>]·6H\u003Csub>2\u003C\u002Fsub>O","Originally approved as BaCa\u003Csub>2\u003C\u002Fsub>MgNb\u003Csub>6\u003C\u002Fsub>O19·6H\u003Csub>2\u003C\u002Fsub>O, but formula was revised very soon after approval.","Ba\u003Csub>2\u003C\u002Fsub>Na\u003Csub>2\u003C\u002Fsub>Mg[Nb\u003Csub>6\u003C\u002Fsub>O\u003Csub>19\u003C\u002Fsub>] · 6H\u003Csub>2\u003C\u002Fsub>O",[18,19,20,21,22,23],"Ba","Mg","Na","Nb","O","H",[18,19,20,21,22,23],[18,21],[27],"APPROVED","Soon after the approval of the new mineral melcherite (IMA No. 2015-018; see CNMNC Newsletter 25), the authors of the proposal have communicated results of subsequent analytical work on this mineral, which verifies essential contents of sodium. The new data were examined carefully by the CNMNC officers and were found reliable. The revised simplified formula, Ba2Na2Mg[Nb6O19]·6H2O, has been approved.",2015,2018,"7","G","B","60","0","Trigonal",10,80," 9.0117"," 23.399",6,2,1645.64,3,"Chemical composition varies from Ba\u003Csub>2\u003C\u002Fsub>Na\u003Csub>2\u003C\u002Fsub>Mg[Nb\u003Csub>6\u003C\u002Fsub>O\u003Csub>19\u003C\u002Fsub>].6H\u003Csub>2\u003C\u002Fsub>O to (BaK)(NaCa)Mg[Nb\u003Csub>6\u003C\u002Fsub>O\u003Csub>19\u003C\u002Fsub>].6H\u003Csub>2\u003C\u002Fsub>O. Crystal data from the second composition","Irregular, tabular crystals up to 200 μm in maximum dimension.","As  irregular, tabular crystals up to 200 μm in a vug in the carbonatite ","3.733","Vitreous","Transparent","White","Beige",[54,55],"brown","white",[55],"Non-fluorescent","on {001}","Perfect","Carbonatite","Type material is deposited in the collections of the Museu de Geociências, Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562, 05508-080 - São Paulo, SP, Brazil, specimen number DR982","A hexaniobate related to peterandresenite.\r\n\r\nMelcherite has structural layers parallel to the xy plane that stack along the c-axis with simultaneous 1\u002F3 [1 -1 0] displacement so as to produce a R lattice. The melcherite structure is built by layers of...","Named in honor of Geraldo Conrado Melcher (1924-2011), professor and head of the Department of Mining and Petroleum Engineering of the Polytechnic School of the University of São Paulo, Brazil, for his pioneering studies on Jacupiranga carbonatites.","2025-08-11 12:15:13",[],[],[],[],[70],{"id":71,"txt":72,"latitude":73,"longitude":74,"country":75},451,"Jacupiranga mine, Cajati, São Paulo, Brazil",-24.6982599,-48.1258701,"Brazil",1,[78,82,87,91],{"id":79,"year":29,"html":80,"doi":81},244651,"Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter No 25. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  79 (3) 529-535 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2015.079.3.02'>doi:10.1180\u002Fminmag.2015.079.3.02\u003C\u002Fa>","10.1180\u002Fminmag.2015.079.3.02",{"id":83,"year":84,"html":85,"doi":86},244770,2016,"Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2015 and 2016, CNMNC Newsletter No 29. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  80 (1) 199-205 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2016.080.080'>doi:10.1180\u002Fminmag.2016.080.080\u003C\u002Fa>","10.1180\u002Fminmag.2016.080.080",{"id":88,"year":30,"html":89,"doi":90},244998,"Andrade, Marcelo B., Atencio, Daniel, Menezes Filho, Luiz A. D., Spratt, John (2018) Melcherite, trigonal Ba\u003Csub>2\u003C\u002Fsub>Na\u003Csub>2\u003C\u002Fsub>Mg[Nb\u003Csub>6\u003C\u002Fsub>O\u003Csub>19\u003C\u002Fsub>]·6H\u003Csub>2\u003C\u002Fsub>O, the second natural hexaniobate, from Cajati, São Paulo, Brazil: Description and crystal structure. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  82 (1) 111-120 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2017.081.026'>doi:10.1180\u002Fminmag.2017.081.026\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FMM82_111.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.2017.081.026",{"id":92,"year":93,"html":94,"doi":11},16965928,2020,"(2020) Melcherite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fmelcherite.pdf' class='refpdflink'>\u003C\u002Fa>",[],[],[98,99],"IMA2015-018","Melcheriet",[101,105,110,113],{"lang":102,"names":103},"ca",[104],"melcherita",{"lang":106,"names":107},"de",[108,109],"IMA 2015-018","Melcherit",{"lang":111,"names":112},"eu",[104],{"lang":114,"names":115},"it",[116],"melcherite","Q20743475",{"history":11,"applications":11}]