[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:2648":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":11,"approval_year":11,"publication_year":28,"discovery_year":11,"strunz10ed1":29,"strunz10ed2":30,"strunz10ed3":22,"strunz10ed4":31,"dana8ed1":32,"dana8ed2":32,"dana8ed3":32,"dana8ed4":32,"csystem":33,"cclass":34,"spacegroup":11,"spacegroupset":32,"a":35,"b":36,"c":37,"alpha":32,"beta":38,"gamma":32,"aerror":39,"berror":40,"cerror":41,"alphaerror":11,"betaerror":42,"gammaerror":11,"va3":43,"z":11,"csmetamict":13,"commentcrystal":44,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":45,"hmin":46,"hmax":46,"hardtype":11,"vhnmin":32,"vhnmax":32,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":47,"dmeas2":47,"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":57,"luminescence":11,"uv":58,"cleavage":59,"cleavagetype":60,"fracturetype":61,"tenacity":62,"commentbreak":11,"opticaltype":63,"opticalsign":11,"opticalalpha":64,"opticalalpha2":32,"opticalalphaerror":11,"opticalbeta":32,"opticalbeta2":32,"opticalbetaerror":11,"opticalgamma":65,"opticalgamma2":32,"opticalgammaerror":11,"opticalomega":32,"opticalomega2":32,"opticalomegaerror":11,"opticalepsilon":32,"opticalepsilon2":32,"opticalepsilonerror":11,"opticaln":32,"opticaln2":32,"opticalnerror":11,"optical2vcalc":32,"optical2vcalc2":32,"optical2vcalcerror":11,"optical2vmeasured":32,"optical2vmeasured2":32,"optical2vmeasurederror":11,"rimin":66,"rimax":67,"opticaldispersion":68,"opticalpleochroism":69,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":70,"opticalinternal":71,"opticaltropic":72,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":11,"opticalr":73,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":74,"otheroccurrence":11,"type_specimen_store":75,"description_short":76,"aboutname":77,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":78,"reviewed_at":11,"variety_of":11,"varieties":79,"group_members":80,"associates":81,"confused_with":82,"type_localities":83,"occurrence_total":90,"citations":91,"images":109,"structures":110,"synonyms":117,"language_names":121,"wikidata_qid":146,"texts":147},2648,"1:1:2648:8","53ec3e74-441e-4f23-906e-faa554aa2f5a","Mereheadite","Mrh",0,"mineral",null,309,false,"Pb\u003Csub>47\u003C\u002Fsub>Cl\u003Csub>25\u003C\u002Fsub>(OH)\u003Csub>13\u003C\u002Fsub>O\u003Csub>24\u003C\u002Fsub>(CO\u003Csub>3\u003C\u002Fsub>)(BO\u003Csub>3\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>","Formula originally assumed to be Pb\u003Csub>2\u003C\u002Fsub>O(OH)Cl.","Pb\u003Csub>47\u003C\u002Fsub>O\u003Csub>24\u003C\u002Fsub>(OH)\u003Csub>13\u003C\u002Fsub>Cl\u003Csub>25\u003C\u002Fsub>(BO\u003Csub>3\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(CO\u003Csub>3\u003C\u002Fsub>)",[18,19,20,21,22,23],"Cl","Pb","B","O","C","H",[18,19,20,21,22,23],[20,18,19],[27],"APPROVED",1998,"3","D","45","0","Monoclinic",3,"17.372","27.9419","10.6661","93.152",1,19,6,5,5169.6,"SG Cm; originally reported cell (Welch et al., 1998): C2\u002Fc, 5.680, 5.565, 13.143 A, 90.64°.","Polycrystalline aggregates, up to 10 x 30 mm, in which individual grains are anhedral and rarely exceed 2 mm.",3.5,"7.12","7.31","Vitreous,Resinous","Transparent,Translucent","White","Pale yellow to reddish-orange",[54,55,56],"yellow","orange","white",[56],"Not fluorescent.","(001)","Perfect","Hackly,Conchoidal","brittle","Biaxial","2.19","2.28",2.19,2.28,"relatively strong","Non-pleochroic","Gray","Light yellow","Anisotropic","(17.20,17.95) 400,\r\n(16.50,17.40) 420,\r\n(15.90,16.90) 440,\r\n(15.50,16.50) 460,\r\n(15.10,16.10) 480,\r\n(14.90,15.80) 500,\r\n(14.50,15.50) 520,\r\n(14.30,15.30) 540,\r\n(14.10,15.20) 560,\r\n(14.00,15.00) 580,\r\n(13.90,14.90) 600,\r\n(13.80,14.80) 620,\r\n(13.80,14.80) 640,\r\n(13.70,14.70) 660,\r\n(13.60,14.65) 680,\r\n(13.60,14.60) 700","Lead bearing lenses and cavities in veins of manganese and iron oxide minerals that cut through a sequence of dolomitic limestone.","Natural History Museum, London, England, specimen BM 1965,285 and polished mount E.1175.\r\n\r\n","Related to symesite.","Named after Merehead quarry, Somerset, the source of this and other unusual lead secondary minerals.","2025-08-11 12:14:22",[],[],[],[],[84],{"id":85,"txt":86,"latitude":87,"longitude":88,"country":89},1618,"Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK",51.199794,-2.437908,"UK",4,[92,96,100,105],{"id":93,"year":28,"html":94,"doi":95},284,"Welch, M. D., Criddle, A. J., Symes, R. F. (1998) Mereheadite, Pb\u003Csub>2\u003C\u002Fsub>O(OH)Cl: a new litharge-related oxychloride from Merehead Quarry, Cranmore, Somerset. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  62 (3) 387-393 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002F002646198547657'>doi:10.1180\u002F002646198547657\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_62\u002F62-3-387.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002F002646198547657",{"id":97,"year":98,"html":99,"doi":11},16116836,1999,"Jambor, J.L., Pertsev, N.N., Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 1195-1198.",{"id":101,"year":102,"html":103,"doi":104},16991513,2009,"Krivovichev, S. V., Turner, R., RumseY, M., Siidra, O. I., Kirk, C. A. (2009) The crystal structure and chemistry of mereheadite. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  73 (1) 103-117 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2009.073.1.103'>doi:10.1180\u002Fminmag.2009.073.1.103\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FMM73_103.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.2009.073.1.103",{"id":106,"year":107,"html":108,"doi":11},16965954,2017,"(2017) Mereheadite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fmereheadite.pdf' class='refpdflink'>\u003C\u002Fa>",[],[111],{"id":112,"url":113,"label":114,"formula":115,"spacegroup":116,"year":102},8676,"\u002Fcif\u002F8676.cif","Krivovichev 2009","Pb47 Cl25 O46 C B2 H13","C 1 m 1",[118,119,120],"IMA1996-045","Mereheadiet","Unnamed (Pb Sulphate-Oxychloride)",[122,126,131,135,138,142],{"lang":123,"names":124},"ca",[125],"mereheadita",{"lang":127,"names":128},"de",[129,130],"IMA 1996-045","Mereheadit",{"lang":132,"names":133},"es",[134],"Mereheadita",{"lang":136,"names":137},"eu",[134],{"lang":139,"names":140},"it",[141],"mereheadite",{"lang":143,"names":144},"ta",[145],"மெரியெட்டைட்டு","Q3855102",{"history":11,"applications":11}]