[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:248":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":12,"polytypeof":12,"groupid":13,"weighting":14,"nolocadd":15,"blacklisted":15,"mindat_formula":16,"mindat_formula_note":12,"ima_formula":12,"elements":17,"sigelements":23,"key_elements":12,"impurities":24,"cim":25,"ima_status":12,"ima_notes":26,"ima_history":28,"approval_year":12,"publication_year":12,"discovery_year":29,"strunz10ed1":30,"strunz10ed2":12,"strunz10ed3":12,"strunz10ed4":12,"dana8ed1":31,"dana8ed2":32,"dana8ed3":32,"dana8ed4":33,"csystem":34,"cclass":12,"spacegroup":12,"spacegroupset":30,"a":35,"b":36,"c":37,"alpha":38,"beta":39,"gamma":40,"aerror":12,"berror":12,"cerror":12,"alphaerror":12,"betaerror":12,"gammaerror":12,"va3":12,"z":12,"csmetamict":15,"commentcrystal":12,"twinning":12,"tranglide":12,"parting":12,"epitaxidescription":12,"morphology":12,"tlform":12,"hmin":41,"hmax":42,"hardtype":12,"vhnmin":30,"vhnmax":30,"vhnerror":12,"vhng":12,"vhns":12,"commenthard":12,"dmeas":30,"dmeas2":30,"dcalc":30,"dmeaserror":12,"dcalcerror":12,"commentdense":12,"lustre":12,"lustretype":12,"commentluster":12,"diapheny":12,"streak":43,"colour":44,"commentcolor":12,"colors":45,"streak_colors":49,"luminescence":12,"uv":12,"cleavage":12,"cleavagetype":50,"fracturetype":12,"tenacity":12,"commentbreak":12,"opticaltype":51,"opticalsign":52,"opticalalpha":53,"opticalalpha2":54,"opticalalphaerror":12,"opticalbeta":55,"opticalbeta2":56,"opticalbetaerror":12,"opticalgamma":57,"opticalgamma2":58,"opticalgammaerror":12,"opticalomega":30,"opticalomega2":30,"opticalomegaerror":12,"opticalepsilon":30,"opticalepsilon2":30,"opticalepsilonerror":12,"opticaln":30,"opticaln2":30,"opticalnerror":12,"optical2vcalc":59,"optical2vcalc2":60,"optical2vcalcerror":12,"optical2vmeasured":61,"optical2vmeasured2":62,"optical2vmeasurederror":12,"rimin":63,"rimax":64,"opticaldispersion":65,"opticalpleochroism":12,"opticalpleochorismdesc":12,"opticalbirefringence":12,"opticalcomments":12,"opticalcolour":12,"opticalinternal":12,"opticaltropic":12,"opticalanisotropism":12,"opticalbireflectance":12,"opticalextinction":12,"opticalr":12,"specdispm":12,"ir":12,"electrical":12,"magnetism":12,"thermalbehaviour":12,"other":12,"industrial":12,"occurrence":12,"otheroccurrence":12,"type_specimen_store":12,"description_short":12,"aboutname":66,"rock_parent":12,"rock_parent2":12,"rock_root":67,"rock_bgs_code":12,"meteoritical_code":12,"updttime":68,"reviewed_at":12,"variety_of":69,"varieties":76,"group_members":80,"associates":94,"confused_with":95,"type_localities":96,"occurrence_total":101,"citations":102,"images":128,"structures":266,"synonyms":293,"language_names":304,"wikidata_qid":12,"texts":305},248,"1:1:248:4","0e0be8a1-e639-4229-bf3b-49edfef26c5d","Anorthoclase","Ano",2,"variety",96,null,118,1615,false,"(Na,K)AlSi\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>",[18,19,20,21,22],"Al","Na","Si","O","K",[18,19,20,21],"Fe,Ca","16.4.4",[27],"INTERMEDIATE","Listed in Whitney (2010)[[1]] as intermediate.","1885","0","76","1","6","Triclinic","8.28","12.97","7.15","91.05","116.26","90.15",6,6.5,"white","white, colourless, greyish pink",[43,46,47,48],"colorless","gray","pink",[43],"Perfect","Biaxial","-","1.519","1.529","1.524","1.534","1.527","1.536","64","74","34","60",1.519,1.536,"r > v","Named in 1885 by Karl Harry Ferdinand Rosenbusch from the Greek αν, ορθός and κλάσις, meaning \"not right cleavage\", descriptive of the mineral's cleavage.",0,"2025-08-11 12:14:18",{"id":11,"name":70,"entrytype":67,"csystem":34,"ima_formula":71,"mindat_formula":71,"hmin":41,"hmax":42,"dmeas":72,"dcalc":73,"strunz10ed1":74,"primary_image_id":75},"Albite","Na(AlSi\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>)","2.6","2.615","9",549,[77],{"id":78,"name":79,"entrytype":9,"csystem":12,"ima_formula":12,"mindat_formula":16,"hmin":12,"hmax":12,"dmeas":30,"dcalc":12,"primary_image_id":12},8415,"Analbite (of Winchell)",[81,89],{"id":82,"name":83,"entrytype":67,"csystem":84,"ima_formula":85,"mindat_formula":86,"hmin":12,"hmax":12,"dmeas":12,"dcalc":87,"primary_image_id":88},54018,"Ferrisanidine","Monoclinic","K(Fe\u003Csup>3+\u003C\u002Fsup>Si\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>)","K[Fe\u003Csup>3+\u003C\u002Fsup>Si\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>]","2.722",8637,{"id":90,"name":91,"entrytype":67,"csystem":84,"ima_formula":92,"mindat_formula":92,"hmin":12,"hmax":12,"dmeas":30,"dcalc":30,"primary_image_id":93},7276,"Rubicline","Rb(AlSi\u003Csub>3\u003C\u002Fsub>O\u003Csub>8\u003C\u002Fsub>)",21261,[],[],[97],{"id":98,"txt":99,"latitude":12,"longitude":12,"country":100},2098,"Pantelleria Island, Trapani Province, Sicily, Italy","Italy",305,[103,108,112,116,120,124],{"id":104,"year":105,"html":106,"doi":107},5812,1964,"Carmichael, I. S. E., MacKenzie, W. S. (1964) The lattice parameters of high-temperature triclinic sodic feldspars. \u003Ci>Mineralogical Magazine and Journal of the Mineralogical Society\u003C\u002Fi>,  33 (266) 949-962 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1964.033.266.03'>doi:10.1180\u002Fminmag.1964.033.266.03\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_33\u002F33-266-949.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1964.033.266.03",{"id":109,"year":110,"html":111,"doi":12},16100781,1982,"Harlow, G.E. (1982) The anorthoclase structures: the effects of temperature and composition. American Mineralogist: 67: 975-996.",{"id":113,"year":114,"html":115,"doi":12},529093,1991,"Kroll, Herbert, Knitter, Regina (1991) Al, Si exchange kinetics in sanidine and anorthoclase and modeling of rock cooling paths. \u003Ci>American Mineralogist\u003C\u002Fi>,  76 (5-6) 928-941 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM76\u002FAM76_928.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":117,"year":118,"html":119,"doi":12},1118654,1997,"Gaines, Richard V.; Skinner, H. Catherine W.; Foord, Eugene E.; Mason, Brian; Rosenzweig, Abraham; King, Vandall T. (1997) \u003Ci>Dana's New Mineralogy\u003C\u002Fi> (8th ed.). Wiley-Interscience. 1872 pp.",{"id":121,"year":122,"html":123,"doi":12},16962905,2001,"(2001) Anorthoclase. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fanorthoclase.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":125,"year":126,"html":127,"doi":12},16100783,2010," Whitney, D. L., & Evans, B. W. (2010). Abbreviations for names of rock-forming minerals. American mineralogist, 95(1), 185-187.",[129,139,149,157,167,174,181,188,196,204,211,219,226,233,241,249,259],{"id":130,"source_url":131,"license_code":132,"credit_html":133,"title":134,"description":135,"author":136,"original_width":137,"original_height":138},33148,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6548519","Public domain","USGS, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=6548519\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","USGS anorthoclase.jpg","Photomicrograph of bostonite of group 9 from \u003Ca href=\"\u002F\u002Fcommons.wikimedia.org\u002Fwiki\u002FDike\" class=\"mw-redirect\" title=\"Dike\">dike\u003C\u002Fa>, 750 feet north of reservoir, Central City; Phenocryst of \u003Ca href=\"\u002F\u002Fcommons.wikimedia.org\u002Fwiki\u002FOrthoclase\" class=\"mw-redirect\" title=\"Orthoclase\">orthoclase\u003C\u002Fa> in groundmass of \u003Ca href=\"\u002F\u002Fcommons.wikimedia.org\u002Fw\u002Findex.php?title=Anorthoclase&action=edit&redlink=1\" class=\"new\" title=\"Anorthoclase (page does not exist)\">anorthoclase\u003C\u002Fa> blades, which show marked flow structure. a, anorthoclase, o, orthoclase; h, hole in slide. Plain light. Gilpin County, Colorado. Pre-1950. Figure 13-E, in U.S.Geological Survey","USGS",700,581,{"id":140,"source_url":141,"license_code":142,"credit_html":143,"title":144,"description":145,"author":146,"original_width":147,"original_height":148},33149,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10161938","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10161938\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase-219058.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAnorthoclase\" class=\"extiw\" title=\"en:Anorthoclase\">Anorthoclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMount_Erebus\" class=\"extiw\" title=\"en:Mount Erebus\">Mt Erebus\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRoss_Island\" class=\"extiw\" title=\"en:Ross Island\">Ross Island\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FVictoria_Land\" class=\"extiw\" title=\"en:Victoria Land\">Victoria Land\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEast_Antarctica\" class=\"extiw\" title=\"en:East Antarctica\">Eastern Antarctica\u003C\u002Fa>, Antarctica (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-27918.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.5 x 2.5 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>Unless you have been to Antarctica or know someone who has, this is a rarely available mineral species and specimen. This is a euhedral, tannish-gray anorthoclase feldspar crystal from Mt. Erebus, on Ross Island. This flattened, floater crystal is pristine. Mt. Erebus Volcano (3794m) is home to the world’s only persistently convecting anorthoclase-phonolite lava lake. There is only one other place on the planet where these crystals can be found, Mt. Kenya, Africa. Crystals grow in the magma beneath Erebus and get spit out of the mountain inside glassy volcanic bombs. The glass quickly weathers away leaving the mountainside covered in crystals. These crystals are coveted by almost everyone at McMurdo Station. Links to this information were kindly provided by a geologist\u002Fneighbor of mine, who spent several field seasons mapping there. This was obtained in a small collection of a geologist, some years ago. Currently in the Dan Carlson mineral collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",340,575,{"id":150,"source_url":151,"license_code":142,"credit_html":152,"title":153,"description":154,"author":146,"original_width":155,"original_height":156},33150,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466876","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466876\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase-tn23a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAnorthoclase\" class=\"extiw\" title=\"en:Anorthoclase\">Anorthoclase\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Kusukidani, Wakayama Prefecture, Kinki Region, Honshu island, Japan\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 1.3 x 0.9 x 0.7 cm\n\u003Cdl>\u003Cdt>Anorthoclase\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is another rarely seen member of the feldspar family. It is doubly terminated, light tan, with fair luster.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",400,296,{"id":158,"source_url":159,"license_code":160,"credit_html":161,"title":162,"description":163,"author":164,"original_width":165,"original_height":166},33162,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795955","CC BY 2.0","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795955\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase crystal from kenyte lava (Late Pleistocene or Holocene; summit cone of Mt. Erebus Volcano, Ross Island, Antarctica) 4.jpg","Anorthoclase crystal from the Quaternary of Antarctica.  \n\u003Cp>Mt. Erebus is the only active volcano in Antarctica.  It is a 1.3 million year old, polygenetic stratovolcano in the West Antarctic Rift System.  It has erupted basanite, trachyte, tephriphonolite, and phonolite (kenyte) lavas during its history.  The summit cone of Erebus has an anorthoclase phenocryst gravel lag, derived from weathering and erosion of kenyte lava, the 2nd-rarest lava type on Earth (Mt. Kenya Volcano in eastern Africa also has kenyte).  Kenyte is a porphyritic phonolite having anorthoclase feldspar phenocrysts and a glassy to cryptocrystalline groundmass.\n\u003C\u002Fp>\u003Cp>Anorthoclase is a type of feldspar, (Na,K)AlSi3O8) - sodium potassium aluminosilicate.  This anorthoclase phenocryst has a coating of weathered, highly vesiculated, glassy kenyte.  The lava from which the crystal derives is Late Pleistocene or Holocene in age (I’m not sure which).\n\u003C\u002Fp>\nLocality: Mt. Erebus Volcano, western Ross Island, Ross Sea, Antarctica (77º 31’ 51” South latidude, 167º 08’ 40” East longitude)","James St. John",2566,1077,{"id":168,"source_url":169,"license_code":160,"credit_html":170,"title":171,"description":163,"author":164,"original_width":172,"original_height":173},33163,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795957","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795957\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase crystal from kenyte lava (Late Pleistocene or Holocene; summit cone of Mt. Erebus Volcano, Ross Island, Antarctica) 6.jpg",1974,699,{"id":175,"source_url":176,"license_code":160,"credit_html":177,"title":178,"description":163,"author":164,"original_width":179,"original_height":180},33164,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795969","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795969\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase crystal from kenyte lava (Late Pleistocene or Holocene; summit cone of Mt. Erebus Volcano, Ross Island, Antarctica) 7.jpg",2094,742,{"id":182,"source_url":183,"license_code":160,"credit_html":184,"title":185,"description":163,"author":164,"original_width":186,"original_height":187},33165,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795970","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795970\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase crystal from kenyte lava (Late Pleistocene or Holocene; summit cone of Mt. Erebus Volcano, Ross Island, Antarctica) 8.jpg",2078,695,{"id":189,"source_url":190,"license_code":160,"credit_html":191,"title":192,"description":193,"author":164,"original_width":194,"original_height":195},33152,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433784","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433784\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 1 (29477383824).jpg","\u003Cp>Anorthoclase feldspar with iridescent hematite inclusions from Russia. (field of view ~5.8 cm across)\n\u003C\u002Fp>\u003Cp>This is a large single crystal of anorthoclase feldspar ((K,Na)AlSi3O8 - potassium sodium aluminosilicate), probably derived from a pegmatitic granite body.  The small, colorful specks (click on the above photo to zoom in) are inclusions of iridescent, hexagonal to anhedral tabular hematite (Fe2O3 - iron oxide).  The feldspar itself has some adularescence at certain light angles, making it a \"moonstone\".  The colorful hematite inclusions make this a \"sunstone\".  The end result is \"Sun-Moon Stone\".\n\u003C\u002Fp>\nLocality: Potanikha Quarry (vermiculite quarry at or near the town of Kasli), northern Chelyabinsk Province, in the Potaninskie Mountains (Potaniny Mountains), eastern side of the southern Ural Mountains, western Russia",2905,1905,{"id":197,"source_url":198,"license_code":160,"credit_html":199,"title":200,"description":201,"author":164,"original_width":202,"original_height":203},33153,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433785","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433785\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 2 (30105516385).jpg","\u003Cp>Anorthoclase feldspar with iridescent hematite inclusions from Russia. (field of view ~5.5 cm across)\n\u003C\u002Fp>\u003Cp>This is a large single crystal of anorthoclase feldspar ((K,Na)AlSi3O8 - potassium sodium aluminosilicate), probably derived from a pegmatitic granite body.  The small, colorful specks (click on the above photo to zoom in) are inclusions of iridescent, hexagonal to anhedral tabular hematite (Fe2O3 - iron oxide).  The feldspar itself has some adularescence at certain light angles, making it a \"moonstone\".  The colorful hematite inclusions make this a \"sunstone\".  The end result is \"Sun-Moon Stone\".\n\u003C\u002Fp>\nLocality: Potanikha Quarry (vermiculite quarry at or near the town of Kasli), northern Chelyabinsk Province, in the Potaninskie Mountains (Potaniny Mountains), eastern side of the southern Ural Mountains, western Russia",3598,2439,{"id":205,"source_url":206,"license_code":160,"credit_html":207,"title":208,"description":201,"author":164,"original_width":209,"original_height":210},33154,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433788","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433788\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 3 (29991299092).jpg",3600,2355,{"id":212,"source_url":213,"license_code":160,"credit_html":214,"title":215,"description":216,"author":164,"original_width":217,"original_height":218},33155,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433789","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433789\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 4 (29477841703).jpg","\u003Cp>Anorthoclase feldspar with iridescent hematite inclusions from Russia. (field of view ~6.8 cm across)\n\u003C\u002Fp>\u003Cp>This is a large single crystal of anorthoclase feldspar ((K,Na)AlSi3O8 - potassium sodium aluminosilicate), probably derived from a pegmatitic granite body.  The small, colorful specks (click on the above photo to zoom in) are inclusions of iridescent, hexagonal to anhedral tabular hematite (Fe2O3 - iron oxide).  The feldspar itself has some adularescence at certain light angles, making it a \"moonstone\".  The colorful hematite inclusions make this a \"sunstone\".  The end result is \"Sun-Moon Stone\".\n\u003C\u002Fp>\nLocality: Potanikha Quarry (vermiculite quarry at or near the town of Kasli), northern Chelyabinsk Province, in the Potaninskie Mountains (Potaniny Mountains), eastern side of the southern Ural Mountains, western Russia",3245,2845,{"id":220,"source_url":221,"license_code":160,"credit_html":222,"title":223,"description":201,"author":164,"original_width":224,"original_height":225},33156,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433791","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433791\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 5 (30105541065).jpg",3019,2993,{"id":227,"source_url":228,"license_code":160,"credit_html":229,"title":230,"description":193,"author":164,"original_width":231,"original_height":232},33157,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433796","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433796\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 6 (29991276442).jpg",3182,2212,{"id":234,"source_url":235,"license_code":160,"credit_html":236,"title":237,"description":238,"author":164,"original_width":239,"original_height":240},33158,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433797","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433797\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 8 (30021973741).jpg","\u003Cp>Anorthoclase feldspar with iridescent hematite inclusions from Russia. (field of view ~5.8 cm across)\n\u003C\u002Fp>\u003Cp>This is a large single crystal of anorthoclase feldspar ((K,Na)AlSi3O8 - potassium sodium aluminosilicate), probably derived from a pegmatitic granite body.  The small, colorful specks (click on the above photo to zoom in) are inclusions of iridescent, hexagonal to anhedral tabular hematite (Fe2O3 - iron oxide).  The feldspar itself has some adularescence at certain light angles (just visible in this shot), making it a \"moonstone\".  The colorful hematite inclusions make this a \"sunstone\".  The end result is \"Sun-Moon Stone\".\n\u003C\u002Fp>\nLocality: Potanikha Quarry (vermiculite quarry at or near the town of Kasli), northern Chelyabinsk Province, in the Potaninskie Mountains (Potaniny Mountains), eastern side of the southern Ural Mountains, western Russia",3118,2403,{"id":242,"source_url":243,"license_code":160,"credit_html":244,"title":245,"description":246,"author":164,"original_width":247,"original_height":248},33159,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433798","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=74433798\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase feldspar with iridescent hematite inclusions (Potanikha Quarry, Kasli, Ural Mountains, Russia) 7 (29810807540).jpg","\u003Cp>Anorthoclase feldspar with iridescent hematite inclusions from Russia. (field of view ~5.7 cm across)\n\u003C\u002Fp>\u003Cp>This is a large single crystal of anorthoclase feldspar ((K,Na)AlSi3O8 - potassium sodium aluminosilicate), probably derived from a pegmatitic granite body.  The small, colorful specks (click on the above photo to zoom in) are inclusions of iridescent, hexagonal to anhedral tabular hematite (Fe2O3 - iron oxide).  The feldspar itself has some adularescence at certain light angles (just visible in this shot), making it a \"moonstone\".  The colorful hematite inclusions make this a \"sunstone\".  The end result is \"Sun-Moon Stone\".\n\u003C\u002Fp>\nLocality: Potanikha Quarry (vermiculite quarry at or near the town of Kasli), northern Chelyabinsk Province, in the Potaninskie Mountains (Potaniny Mountains), eastern side of the southern Ural Mountains, western Russia",2996,2103,{"id":250,"source_url":251,"license_code":252,"credit_html":253,"title":254,"description":255,"author":256,"original_width":257,"original_height":258},3496,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163486897","CC0 1.0","Darla Sondrol, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=163486897\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase (GeoDIL number - 2383).jpg","Anorthoclase, KAlSi3O8 (potasium aluminum silicate), is a polymorph of other minerals that share the same chemistry, but have different crystal structures. Anorthoclase usually has a flattened crystal habit. Moonstone comes in colorless, white, yellow, orange, and gray. It always has a white or blue sheen. That is, moonstone reflects light in a distinctive shimmering phenomenon known as adularescence.","Darla Sondrol",1816,1476,{"id":260,"source_url":261,"license_code":160,"credit_html":262,"title":263,"description":163,"author":164,"original_width":264,"original_height":265},32363,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795971","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=146795971\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Anorthoclase crystal from kenyte lava (Late Pleistocene or Holocene; summit cone of Mt. Erebus Volcano, Ross Island, Antarctica) 9.jpg",2110,783,[267,274,279,284,289],{"id":268,"url":269,"label":270,"formula":271,"spacegroup":272,"year":273},669,"\u002Fcif\u002F669.cif","Nestola 2008","(Na.63 K.27 Ca.1) (Al1.1 Si2.9) O8","C -1",2008,{"id":275,"url":276,"label":277,"formula":278,"spacegroup":272,"year":110},672,"\u002Fcif\u002F672.cif","Harlow 1982 · (Al Si3) (Na.667 K.333) O8 (1)","(Al Si3) (Na.667 K.333) O8",{"id":280,"url":281,"label":282,"formula":278,"spacegroup":283,"year":110},673,"\u002Fcif\u002F673.cif","Harlow 1982 · (Al Si3) (Na.667 K.333) O8 (2)","C 1 2\u002Fm 1",{"id":285,"url":286,"label":287,"formula":288,"spacegroup":272,"year":110},674,"\u002Fcif\u002F674.cif","Harlow 1982 · (Al Si3) (Na.75 K.25) O8 (1)","(Al Si3) (Na.75 K.25) O8",{"id":290,"url":291,"label":292,"formula":288,"spacegroup":283,"year":110},675,"\u002Fcif\u002F675.cif","Harlow 1982 · (Al Si3) (Na.75 K.25) O8 (2)",[294,295,296,297,298,299,300,301,302,303],"Anorthoklas","Anorthose","Anortoclasio","Anothose","Mikroklas","Natron-orthoklas","Natronmikroklin","Pantellarite","Pseudo-Orthoclase","Soda-Microcline",[],{"history":12,"applications":12}]