[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:2442":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":27,"key_elements":28,"impurities":29,"cim":30,"ima_status":31,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":33,"discovery_year":34,"strunz10ed1":35,"strunz10ed2":36,"strunz10ed3":37,"strunz10ed4":38,"dana8ed1":39,"dana8ed2":40,"dana8ed3":41,"dana8ed4":42,"csystem":43,"cclass":11,"spacegroup":11,"spacegroupset":44,"a":45,"b":44,"c":46,"alpha":44,"beta":44,"gamma":44,"aerror":47,"berror":11,"cerror":48,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":49,"csmetamict":13,"commentcrystal":50,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":51,"hmin":11,"hmax":11,"hardtype":11,"vhnmin":44,"vhnmax":44,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":52,"dmeas2":52,"dcalc":53,"dmeaserror":47,"dcalcerror":54,"commentdense":55,"lustre":11,"lustretype":56,"commentluster":11,"diapheny":57,"streak":11,"colour":58,"commentcolor":11,"colors":59,"streak_colors":11,"luminescence":11,"uv":11,"cleavage":62,"cleavagetype":63,"fracturetype":64,"tenacity":65,"commentbreak":66,"opticaltype":67,"opticalsign":68,"opticalalpha":69,"opticalalpha2":44,"opticalalphaerror":47,"opticalbeta":70,"opticalbeta2":44,"opticalbetaerror":11,"opticalgamma":70,"opticalgamma2":44,"opticalgammaerror":47,"opticalomega":44,"opticalomega2":44,"opticalomegaerror":11,"opticalepsilon":44,"opticalepsilon2":44,"opticalepsilonerror":11,"opticaln":44,"opticaln2":44,"opticalnerror":11,"optical2vcalc":44,"optical2vcalc2":44,"optical2vcalcerror":11,"optical2vmeasured":71,"optical2vmeasured2":44,"optical2vmeasurederror":11,"rimin":72,"rimax":73,"opticaldispersion":74,"opticalpleochroism":75,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":76,"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":77,"otheroccurrence":11,"type_specimen_store":11,"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":49,"citations":91,"images":104,"structures":115,"synonyms":116,"language_names":119,"wikidata_qid":135,"texts":136},2442,"1:1:2442:2","146cf87c-5d1c-4abb-ad2f-852e84f8017b","Lourenswalsite","Lrw",0,"mineral",null,74,false,"(K,Ba)\u003Csub>2\u003C\u002Fsub>(Ti,Mg,Ca,Fe)\u003Csub>4\u003C\u002Fsub>(Si,Al,Fe)\u003Csub>6\u003C\u002Fsub>O\u003Csub>14\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub>","(K,Ba)\u003Csub>2\u003C\u002Fsub>Ti\u003Csub>4\u003C\u002Fsub>(Si,Al)\u003Csub>6\u003C\u002Fsub>O\u003Csub>14\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub>",[17,18,19,20,21,22,23,24,25,26],"Al","Ba","Ca","Fe","Mg","Si","Ti","O","K","H",[22,23,24,25,26],[23],",Al,H2O,","16.14.7",[32],"APPROVED",1987,"1987","9","E","J","05","61","2","3","1","Hexagonal","0","5.244","20.49",2,3,1,"Crystal Data: Pseudohexagonal. Point Group: n.d.; Space Group: n.d.","Tiny rosettelike clusters, to about 1 mm, of fragile, very thin hexagonal flakes a few micrometers on edge.","3.17","3.199",5,"Measured by floatation","Pearly,Dull","Translucent","Silvery gray to light brownish gray",[60,61],"gray","brown","good on {001}","Distinct\u002FGood","Irregular\u002FUneven","brittle","Very fragile","Biaxial","-","1.815","1.840","~0",1.815,1.84,"r > v","Non-pleochroic","Extremely low 2V. Parallel extinction and positive elongation when viewed when lying on the platy cleavage.","Oxidation zone of nepheline syenite","Named after Dr. Lourens Wals (Zuiderwoude, The Netherlands 18 May 1939 - Zoutelande, The Netherlands 2 August 2020), a Dutch mineral collector who lived in Turnhout, Belgium and later in Zoutelande, The Netherlands. From 1977 to 1980 he was vice-president of the Mineralogische Kring Antwerpen (www.minerant.org).","2025-12-11 10:37:27",[],[],[],[],[85],{"id":86,"txt":87,"latitude":88,"longitude":89,"country":90},3410,"Diamond Jo Quarry, Magnet Cove, Hot Spring County, Arkansas, USA",34.4382458,-92.8632108,"USA",[92,96,100],{"id":93,"year":33,"html":94,"doi":95},1401,"Appleman, Daniel E., Evans, Howard T., Nord, Gordon L., Dwornik, Edward J., Milton, Charles (1987) Delindeite titanosilicates and lourenswalsite, two new from the Magnet Cove region, Arkansas. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  51 (361) 417-425 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1987.051.361.08'>doi:10.1180\u002Fminmag.1987.051.361.08\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_51\u002F51-361-417.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1987.051.361.08",{"id":97,"year":98,"html":99,"doi":11},528598,1988,"Jambor, John L., Ercit, Ernst A. J. Burke T. Scott, Grice, Joel D. (1988) New Mineral Names. \u003Ci>American Mineralogist\u003C\u002Fi>,  73 (11-12) 1492-1499 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM73\u002FAM73_1492.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":101,"year":102,"html":103,"doi":11},16965660,2001,"(2001) Lourenswalsite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Flourenswalsite.pdf' class='refpdflink'>\u003C\u002Fa>",[105],{"id":106,"source_url":107,"license_code":108,"credit_html":109,"title":110,"description":111,"author":112,"original_width":113,"original_height":114},14764,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866011","CC BY-SA 3.0","Leon Hupperichs, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866011\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Lourenswalsite-88988.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FLourenswalsite\" class=\"extiw\" title=\"en:Lourenswalsite\">Lourenswalsite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Diamond Jo Quarry, Magnet Cove, Hot Spring Co., Arkansas, USA\u003C\u002Fdd>\n\u003Cdd>Light brownish rosette of Lourenswalsite, field of view 2,5 mm. Specimen and photo Leon Hupperichs.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Leon Hupperichs",642,504,[],[117,118],"IMA1987-005","Lourenswalsiet",[120,124,128,132],{"lang":121,"names":122},"ca",[123],"lourenswalsita",{"lang":125,"names":126},"de",[117,127],"Lourenswalsit",{"lang":129,"names":130},"eu",[131],"Lourenswalsita",{"lang":133,"names":134},"it",[7],"Q3837688",{"history":11,"applications":11}]