[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:2506":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":15,"elements":16,"sigelements":22,"key_elements":23,"impurities":24,"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":11,"spacegroup":11,"spacegroupset":39,"a":40,"b":41,"c":42,"alpha":39,"beta":39,"gamma":39,"aerror":43,"berror":44,"cerror":43,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":45,"csmetamict":13,"commentcrystal":46,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":47,"tlform":48,"hmin":49,"hmax":45,"hardtype":11,"vhnmin":39,"vhnmax":39,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":50,"dmeas2":50,"dcalc":50,"dmeaserror":44,"dcalcerror":11,"commentdense":11,"lustre":51,"lustretype":52,"commentluster":11,"diapheny":53,"streak":54,"colour":55,"commentcolor":11,"colors":56,"streak_colors":59,"luminescence":11,"uv":11,"cleavage":60,"cleavagetype":61,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":62,"opticalsign":63,"opticalalpha":64,"opticalalpha2":39,"opticalalphaerror":44,"opticalbeta":65,"opticalbeta2":39,"opticalbetaerror":44,"opticalgamma":66,"opticalgamma2":39,"opticalgammaerror":44,"opticalomega":39,"opticalomega2":39,"opticalomegaerror":11,"opticalepsilon":39,"opticalepsilon2":39,"opticalepsilonerror":11,"opticaln":39,"opticaln2":39,"opticalnerror":11,"optical2vcalc":67,"optical2vcalc2":39,"optical2vcalcerror":11,"optical2vmeasured":68,"optical2vmeasured2":39,"optical2vmeasurederror":69,"rimin":70,"rimax":71,"opticaldispersion":72,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":73,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":74,"other":75,"industrial":11,"occurrence":76,"otheroccurrence":11,"type_specimen_store":77,"description_short":11,"aboutname":78,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":79,"reviewed_at":11,"variety_of":11,"varieties":80,"group_members":81,"associates":82,"confused_with":83,"type_localities":84,"occurrence_total":101,"citations":102,"images":114,"structures":135,"synonyms":142,"language_names":145,"wikidata_qid":180,"texts":181},2506,"1:1:2506:1","40558ab8-dfb2-4b63-af93-1e9c90cc69db","Macdonaldite","Mcd",0,"mineral",null,210,false,"BaCa\u003Csub>4\u003C\u002Fsub>Si\u003Csub>16\u003C\u002Fsub>O\u003Csub>36\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub>·10H\u003Csub>2\u003C\u002Fsub>O","BaCa\u003Csub>4\u003C\u002Fsub>Si\u003Csub>16\u003C\u002Fsub>O\u003Csub>36\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub> · 10H\u003Csub>2\u003C\u002Fsub>O",[17,18,19,20,21],"Ba","Ca","Si","O","H",[17,18,19,20,21],[17],",Ti,Al,Fe,Mn,Mg,Sr,","14.7.4",[27],"APPROVED",1965,"1964","9","E","B","05","72","5","1","3","Orthorhombic","0","14.06","23.52","13.08",1,2,4,"Point Group: 2\u002Fm 2\u002Fm 2\u002Fm or mm2:; Space Group: Bmmb; B2mb; or Bm21 b:","Fibrous, in radiating aggregates, and granular. Elongated along [100] and showing forms {010} (major), {001}, and {100).","Vein-forming mineral. Small radiating crystal aggregates up to 12 mm in diameter and individual fibers as much as 6 mm long, but more commonly about 1 mm long.",3.5,"2.27","Satiny, Vitreous","Vitreous,Silky","Transparent,Translucent","White","White, colourless",[57,58],"white","colorless",[57],"Perfect on {010}, good on {001}, poor or a fracture on {100}.","Perfect","Biaxial","+\u002F-","1.518","1.524","1.530","88","90",5,1.518,1.53,"weak","X = c; Y = b; Z = a.","Gives off water in a closed tube test and fuses at about 5 1\u002F2.\r\n\r\nHeated in an electric furnace, it shows no significant change\r\nin appearance until 1200 °C, when it turns opaque white and the weight loss totals 13.7%. At 1300 °C it shows no further\r\nchange but may be near its melting point.","Insoluble in cold acids and bases. Decomposed by boiling 1:1 HCl. After boiling in HCl, a transparent platy silica residue remains.","Sanbornite-quartz-bearing metamorphic rock.","California Division of Mines & Geology, San Francisco, California, USA.","Named in honour of Gordon A. Macdonald (15 October 1911 – 20 June 1978), notable American volcanologist and Senior Professor of Geology at the University of Hawaii at the time of the description. His 1938 Ph.D. thesis \"Geology of the Western Sierra Nevada Between Kings and San Joaquin Rivers, California\" included this area.","2025-08-11 12:14:21",[],[],[],[],[85,91,96],{"id":86,"txt":87,"latitude":88,"longitude":89,"country":90},3457,"Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA",36.9151074,-119.2444916,"USA",{"id":92,"txt":93,"latitude":94,"longitude":95,"country":90},4369,"Esquire No. 1 claim, Rush Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA",36.9736111,-119.2502778,{"id":97,"txt":98,"latitude":99,"longitude":100,"country":90},8237,"Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA",36.9166667,-119.245,11,[103,106,110],{"id":104,"year":28,"html":105,"doi":11},524222,"Alfors, John T., Stinson, Melvin C., Matthews, Robert A., Pabst, Adolf (1965) Seven new barium minerals from eastern Fresno County, California. \u003Ci>American Mineralogist\u003C\u002Fi>,  50 (3-4) 314-340 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM50\u002FAM50_314.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":107,"year":108,"html":109,"doi":11},16115966,1968,"Cannillo, E., Rossi, G., Ungaretti, L. (1968) The crystal structure of macdonaldite. Atti della Accademia Nazionale dei Lincei, Serie 8, 45, 399-414.",{"id":111,"year":112,"html":113,"doi":11},16965695,2001,"(2001) Macdonaldite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fmacdonaldite.pdf' class='refpdflink'>\u003C\u002Fa>",[115,125],{"id":116,"source_url":117,"license_code":118,"credit_html":119,"title":120,"description":121,"author":122,"original_width":123,"original_height":124},14926,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=16385661","CC BY-SA 3.0","Leon Hupperichs, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=16385661\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Macdonaldite-356329.jpg","White sprays of \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMacdonaldite\" class=\"extiw\" title=\"en:Macdonaldite\">Macdonaldite\u003C\u002Fa> (Field of view 4 mm)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Rush Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno County, California, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-26490.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Blue botryoidal crust of McGuinnessite. Field of view 6 mm. Specimen and photo Leon Hupperichs.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Leon Hupperichs",437,401,{"id":126,"source_url":127,"license_code":128,"credit_html":129,"title":130,"description":131,"author":132,"original_width":133,"original_height":134},14927,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163486494","CC0 1.0","Shannon Heinle, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163486494\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Macdonaldite (GeoDIL number - 2174).jpg","Macdonaldite is a silicate with the chemical formula BaCa4Si16O36(OH)2·10(H2O). Macdonaldite forms in sanbornite-bearing metamorphic rocks near a granodiorite contact. Macdonaldite is found in the Big Creek-Rush Creek area, Fresno Co., and on Trumbull Peak, near Incline, Mariposa Co., California, USA. It was named for Gordon Andrew Macdonald (1911-1978) an American volcanologist from the University of Hawaii. This sample is approximately 6 cm.","Shannon Heinle",1452,1308,[136],{"id":137,"url":138,"label":139,"formula":140,"spacegroup":141,"year":108},7942,"\u002Fcif\u002F7942.cif","Cannillo 1968","Ba Ca4 Si16 O48.4 H22.24","C m c m",[143,144],"IMA1964-010","Macdonaldiet",[146,150,154,158,162,165,168,171,176],{"lang":147,"names":148},"ca",[149],"macdonaldita",{"lang":151,"names":152},"cs",[153],"Macdonaldit",{"lang":155,"names":156},"de",[157,153],"IMA 1964-010",{"lang":159,"names":160},"eu",[161],"Macdonaldita",{"lang":163,"names":164},"fr",[7],{"lang":166,"names":167},"it",[7],{"lang":169,"names":170},"sv",[7],{"lang":172,"names":173},"ta",[143,174,175],"மெக்டொனாக்டைட்டு","மெக்டொனால்டைட்டு",{"lang":177,"names":178},"uk",[179],"Макдональдит","Q411794",{"history":11,"applications":11}]