[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:46809":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":29,"dana8ed2":29,"dana8ed3":29,"dana8ed4":29,"csystem":30,"cclass":31,"spacegroup":32,"spacegroupset":29,"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":36,"csmetamict":13,"commentcrystal":11,"twinning":11,"tranglide":11,"parting":38,"epitaxidescription":11,"morphology":11,"tlform":39,"hmin":36,"hmax":36,"hardtype":11,"vhnmin":40,"vhnmax":41,"vhnerror":11,"vhng":42,"vhns":11,"commenthard":11,"dmeas":11,"dmeas2":11,"dcalc":43,"dmeaserror":11,"dcalcerror":11,"commentdense":44,"lustre":11,"lustretype":45,"commentluster":11,"diapheny":46,"streak":47,"colour":48,"commentcolor":11,"colors":49,"streak_colors":52,"luminescence":11,"uv":11,"cleavage":53,"cleavagetype":54,"fracturetype":55,"tenacity":56,"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":57,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":58,"opticalinternal":47,"opticaltropic":59,"opticalanisotropism":60,"opticalbireflectance":61,"opticalextinction":11,"opticalr":62,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":63,"otheroccurrence":11,"type_specimen_store":64,"description_short":65,"aboutname":66,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":67,"reviewed_at":11,"variety_of":11,"varieties":68,"group_members":69,"associates":70,"confused_with":71,"type_localities":72,"occurrence_total":35,"citations":79,"images":100,"structures":101,"synonyms":102,"language_names":105,"wikidata_qid":123,"texts":124},46809,"1:1:46809:7","292b2e90-655a-4722-b354-690ba751dfe6","Grootfonteinite","Gtf",0,"mineral",null,26,false,"Pb\u003Csub>3\u003C\u002Fsub>O(CO\u003Csub>3\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>",[16,17,18],"Pb","O","C",[16,17,18],[16],[22],"APPROVED",2015,2018,"5","B","E","40","0","Hexagonal",18,114,"5.303","13.770",1,2,334.88,"Not observed","Platy grains up to 1 mm across and up to 0.2 mm thick.","48.7","66.1",20,"6.856","Could not be measured","Adamantine","Transparent","White","Colorless",[50,51],"colorless","white",[51],"(0 0 1)","Perfect","Irregular\u002FUneven","brittle","Non-pleochroic","Grey","Anisotropic","Weak, ΔR(589nm)=2.1%, masked by internal reflections","Very weak","(11.7,13.9) 400,\r\n(11.4,13.6) 420,\r\n(11.1,13.3) 440,\r\n(10.9,13.1) 460,\r\n(10.8,13.0) 470,\r\n(10.7,12.9) 480,\r\n(10.6,12.8) 500,\r\n(10.5,12.7) 520,\r\n(10.5,12.6) 540,\r\n(10.5,12.6) 546,\r\n(10.4,12.6) 560,\r\n(10.4,12.5) 580,\r\n(10.3,12.5) 589,\r\n(10.3,12.4) 600,\r\n(10.3,12.4) 620,\r\n(10.2,12.3) 640,\r\n(10.2,12.3) 650,\r\n(10.2,12.2) 660,\r\n(10.2,12.2) 680,\r\n(10.2,12.1) 700","Complex, banded assemblage from a Mn(-Fe) oxide ore unit.  May have formed by regional metamorphism of a primary, Pb-Mn-(As-Ba)-rich, chemically heterogeneous, volcanic-hydrothermal assemblage.","Cotype material is deposited in the mineralogical collections of the Swedish Museum of Natural History, Stockholm, Sweden, catalogue number 20080176.","Structurally related to hydrocerussite and plumbonacrite. Chemically related to shannonite and UM1995-03-CO:Pb.","Named after the Grootfontein district, that includes the type locality.","2025-08-11 12:15:14",[],[],[],[],[73],{"id":74,"txt":75,"latitude":76,"longitude":77,"country":78},2427,"Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia",-19.708116,17.7032969,"Namibia",[80,84,88,92,96],{"id":81,"year":82,"html":83,"doi":11},17195995,1984,"(1984, April 29th) Specimen Price List. David Shannon Minerals",{"id":85,"year":23,"html":86,"doi":87},244697,"Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter No 27. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  79 (5). 1223-1230 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2015.079.5.16'>doi:10.1180\u002Fminmag.2015.079.5.16\u003C\u002Fa>","10.1180\u002Fminmag.2015.079.5.16",{"id":89,"year":24,"html":90,"doi":91},8511210,"Siidra, Oleg, Nekrasova, Diana, Depmeier, Wulf, Chukanov, Nikita, Zaitsev, Anatoly, Turner, Rick (2018) Hydrocerussite-related minerals and materials: structural principles, chemical variations and infrared spectroscopy. \u003Ci>Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials\u003C\u002Fi>, 74 (2). 182-195 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs2052520618000768'>doi:10.1107\u002Fs2052520618000768\u003C\u002Fa>","10.1107\u002Fs2052520618000768",{"id":93,"year":24,"html":94,"doi":95},129700,"Siidra, Oleg I., Jonsson, Erik, Chukanov, Nikita V., Nekrasova, Diana O., Pekov, Igor V., Depmeier, Wulf, Polekhovsky, Yury S., Yapaskurt, Vasiliy O. (2018) Grootfonteinite, Pb\u003Csub>3\u003C\u002Fsub>O(CO\u003Csub>3\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>, a new mineral species from the Kombat Mine, Namibia, merotypically related to hydrocerussite. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  30 (2) 383-391 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002Fejm\u002F2018\u002F0030-2723'>doi:10.1127\u002Fejm\u002F2018\u002F0030-2723\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FEJM30_383.pdf' class='refpdflink'>\u003C\u002Fa>","10.1127\u002Fejm\u002F2018\u002F0030-2723",{"id":97,"year":98,"html":99,"doi":11},16964673,2020,"(2020) Grootfonteinite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fgrootfonteinite.pdf' class='refpdflink'>\u003C\u002Fa>",[],[],[103,104],"Grootfonteiniet","IMA2015-051",[106,110,115,119],{"lang":107,"names":108},"ca",[109],"grootfonteinita",{"lang":111,"names":112},"de",[113,114],"Grootfonteinit","IMA 2015-051",{"lang":116,"names":117},"eu",[118],"Grootfonteinita",{"lang":120,"names":121},"ta",[122],"குரூட்போன்டெய்னைட்டு","Q21682829",{"history":11,"applications":11}]