[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:3094":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":20,"key_elements":21,"impurities":22,"cim":23,"ima_status":24,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":26,"discovery_year":27,"strunz10ed1":28,"strunz10ed2":29,"strunz10ed3":30,"strunz10ed4":31,"dana8ed1":32,"dana8ed2":33,"dana8ed3":33,"dana8ed4":34,"csystem":35,"cclass":36,"spacegroup":36,"spacegroupset":37,"a":38,"b":39,"c":40,"alpha":41,"beta":42,"gamma":43,"aerror":44,"berror":36,"cerror":36,"alphaerror":36,"betaerror":45,"gammaerror":36,"va3":11,"z":36,"csmetamict":13,"commentcrystal":11,"twinning":46,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":11,"tlform":47,"hmin":48,"hmax":49,"hardtype":11,"vhnmin":37,"vhnmax":37,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":50,"dmeas2":51,"dcalc":52,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":53,"commentluster":11,"diapheny":11,"streak":11,"colour":54,"commentcolor":11,"colors":55,"streak_colors":11,"luminescence":11,"uv":58,"cleavage":59,"cleavagetype":60,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":61,"opticalsign":62,"opticalalpha":63,"opticalalpha2":37,"opticalalphaerror":11,"opticalbeta":64,"opticalbeta2":65,"opticalbetaerror":11,"opticalgamma":66,"opticalgamma2":67,"opticalgammaerror":11,"opticalomega":37,"opticalomega2":37,"opticalomegaerror":11,"opticalepsilon":37,"opticalepsilon2":37,"opticalepsilonerror":11,"opticaln":37,"opticaln2":37,"opticalnerror":11,"optical2vcalc":68,"optical2vcalc2":37,"optical2vcalcerror":11,"optical2vmeasured":69,"optical2vmeasured2":70,"optical2vmeasurederror":11,"rimin":71,"rimax":72,"opticaldispersion":73,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":74,"opticalr":11,"specdispm":75,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":11,"otheroccurrence":11,"type_specimen_store":76,"description_short":11,"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":93,"citations":94,"images":118,"structures":129,"synonyms":142,"language_names":145,"wikidata_qid":173,"texts":174},3094,"1:1:3094:2","3a05b080-b06f-4448-bcdc-edf3b65b2d6e","Parakeldyshite","Pkel",0,"mineral",null,236,false,"Na\u003Csub>2\u003C\u002Fsub>ZrSi\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>",[16,17,18,19],"Na","Si","Zr","O",[16,17,18,19],[18],",Ti,Hf,Al,Fe,Mg,Ca,K,H2O,","14.10.4",[25],"APPROVED",1977,"1977","9","B","C","10","55","2","3","Triclinic",2,"0","5.419","6.607","8.806","71.50","87.15","85.63",1,3,"Polysynthetic on {100}, with several other sets intersecting.","Grains to 5 mm and aggregates.",5.5,6,"3.37","3.39","3.40","Vitreous","White, pale blue",[56,57],"white","blue","Fluoresces deep cream under SW UV and a very weak cream under LW UV.","Three cleavages result in a pseudo-rhombohedral shape: {001} perfect, {110} and \u003Cmi>{1_10}\u003C\u002Fmi> somewhat less perfect. The acute angles between these planes are all between 76° and 82°. Also a good cleavage parallel to {011}.","Perfect","Biaxial","-","1.670","1.692","1.697","1.713","1.718","88","83","84",1.67,1.718,"r > v strong","Y ≈ c; X ≈ b; Z ≈ a.","Alters readily to a snow-white coating.","Geology Museum, Kola Branch, Academy of Sciences, Apatity, 3270, 4457; Mining Institute, St. Petersburg, 1079\u002F1{2, vis4361; Vernadsky Geological Museum, Moscow, 517151; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 78461, 78462","Named for its chemical relationship to \u003Cm>keldyshite\u003C\u002Fm>.","2025-08-11 12:14:22",[],[],[],[],[84,90],{"id":85,"txt":86,"latitude":87,"longitude":88,"country":89},2692,"Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia",67.8645481,34.5124316,"Russia",{"id":91,"txt":92,"latitude":11,"longitude":11,"country":89},20431,"Molybdenum Mine, Takhtarvumchorr Mt, Murmansk Oblast, Russia",14,[95,99,102,105,109,113],{"id":96,"year":97,"html":98,"doi":11},16119377,1975,"Sizova, R.G., Kuz'min, E.A., Ilyukhin, V.V. (1975) Deciphering the continuous Patterson function of the Na,Zr-diorthosilicate Na2ZrSi2O7 (parakeldyshite) by the vector subsystem method. Konstitutsiya i Svoistva Mineralov, 9, 10-12.",{"id":100,"year":26,"html":101,"doi":11},16119378,"Khomyakov, A.P. (1977) Parakeldyshite - a new mineral. Doklady Akademii Nauk SSSR, 237, 703-705.",{"id":103,"year":26,"html":104,"doi":11},16942922,"Raade, G., Mladeck, Michel H. (1977) Parakeldyshite from Norway. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  15 (1) 102-107 \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FCM15_102.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":106,"year":107,"html":108,"doi":11},527251,1979,"Fleischer, Michael, Chao, George Y., Mandarino, J. A. (1979) New mineral names. \u003Ci>American Mineralogist\u003C\u002Fi>,  64 (5-6) 652-659 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM64\u002FAM64_652.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":110,"year":111,"html":112,"doi":11},16966540,2001,"(2001) Parakeldyshite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fparakeldyshite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":114,"year":115,"html":116,"doi":117},617145,2007,"Pekov, I. V., Zubkova, N. V., Pushcharovsky, D. Yu., Kolitsch, U., Tillmanns, E. (2007) Refined crystal structure of parakeldyshite and the genetic crystal chemistry of zirconium minerals with [Si2O7] diorthogroups. \u003Ci>Crystallography Reports\u003C\u002Fi>,  52 (6) 1066-1071 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1134\u002Fs1063774507060223'>doi:10.1134\u002Fs1063774507060223\u003C\u002Fa>","10.1134\u002Fs1063774507060223",[119],{"id":120,"source_url":121,"license_code":122,"credit_html":123,"title":124,"description":125,"author":126,"original_width":127,"original_height":128},18665,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=88020249","CC BY-SA 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=88020249\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Parakeldyshite.jpg","White crystals of the rare mineral parakeldyshite from Norway (Bratthagen Quarries, Lågendalen, Hedrum, Larvik, Vestfold, Norway). Parakeldyshite is a zirconium mineral.","David Hospital",887,667,[130,136],{"id":131,"url":132,"label":133,"formula":134,"spacegroup":135,"year":115},10390,"\u002Fcif\u002F10390.cif","Pekov 2007","Na1.934 H.066 Zr Si2 O7","P -1",{"id":137,"url":138,"label":139,"formula":140,"spacegroup":135,"year":141},10391,"\u002Fcif\u002F10391.cif","Voronkov 1970","Na2 Zr Si2 O7",1970,[143,144],"IMA1975-035","Parakeldyshiet",[146,150,155,159,162,166,170],{"lang":147,"names":148},"ca",[149],"parakeldyshita",{"lang":151,"names":152},"de",[153,154],"IMA 1975-035","Parakeldyshit",{"lang":156,"names":157},"eu",[158],"Parakeldyshita",{"lang":160,"names":161},"it",[7],{"lang":163,"names":164},"ja",[165],"パラケルディシャイト",{"lang":167,"names":168},"nb",[169],"parakeldyshitt",{"lang":171,"names":172},"nn",[169],"Q3895138",{"history":11,"applications":11}]