[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:42796":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":19,"key_elements":11,"impurities":11,"cim":11,"ima_status":20,"ima_notes":11,"ima_history":11,"approval_year":22,"publication_year":23,"discovery_year":11,"strunz10ed1":24,"strunz10ed2":25,"strunz10ed3":26,"strunz10ed4":27,"dana8ed1":11,"dana8ed2":11,"dana8ed3":11,"dana8ed4":11,"csystem":28,"cclass":29,"spacegroup":12,"spacegroupset":30,"a":31,"b":32,"c":33,"alpha":11,"beta":34,"gamma":11,"aerror":35,"berror":36,"cerror":37,"alphaerror":11,"betaerror":35,"gammaerror":11,"va3":38,"z":39,"csmetamict":13,"commentcrystal":11,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":40,"tlform":41,"hmin":11,"hmax":11,"hardtype":11,"vhnmin":11,"vhnmax":11,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":11,"dmeas2":11,"dcalc":42,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":43,"commentluster":11,"diapheny":44,"streak":45,"colour":45,"commentcolor":11,"colors":46,"streak_colors":48,"luminescence":11,"uv":49,"cleavage":11,"cleavagetype":11,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":11,"opticalsign":11,"opticalalpha":11,"opticalalpha2":11,"opticalalphaerror":11,"opticalbeta":11,"opticalbeta2":11,"opticalbetaerror":11,"opticalgamma":11,"opticalgamma2":11,"opticalgammaerror":11,"opticalomega":11,"opticalomega2":11,"opticalomegaerror":11,"opticalepsilon":11,"opticalepsilon2":11,"opticalepsilonerror":11,"opticaln":11,"opticaln2":11,"opticalnerror":11,"optical2vcalc":11,"optical2vcalc2":11,"optical2vcalcerror":11,"optical2vmeasured":11,"optical2vmeasured2":11,"optical2vmeasurederror":11,"rimin":11,"rimax":11,"opticaldispersion":11,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":11,"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":50,"otheroccurrence":11,"type_specimen_store":51,"description_short":52,"aboutname":53,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":54,"reviewed_at":11,"variety_of":11,"varieties":55,"group_members":56,"associates":57,"confused_with":67,"type_localities":68,"occurrence_total":29,"citations":80,"images":102,"structures":103,"synonyms":115,"language_names":120,"wikidata_qid":138,"texts":139},42796,"1:1:42796:6","800d5b75-cb5c-442e-8394-8440c72f3245","Jakobssonite","Jak",0,"mineral",null,10,false,"CaAlF\u003Csub>5\u003C\u002Fsub>",[16,17,18],"Al","Ca","F",[16,17,18],[21],"APPROVED",2011,2012,"3","C","D","15","Monoclinic",5,"C2\u002Fc ","8.601","6.2903","7.2190","114.61",1,6,7,355.09,4,"Acicular crystals which are probably elongated along [100]; fragile crusts.","Acicular crystals up to 50 µm long.  Also as a white overgrowth on a yellowish base of massive ralstonite, anhydrite and jarosite which together form a 2-3 cm thick crust on altered scoria.","2.89","Earthy","Transparent","White",[47],"white",[47],"Does not fluoresce in LW UV","Fumarole at ~230ºC.","Type material is deposited in the collections of the Icelandic Institute of Natural History, Reykjavık, Iceland, sample number NI 12256 (Eldfell). A cotype sample has the number NI 15511(Hekla).","It is known as a synthetic phase (Hemon & Courbion, 1991). Jakobsson et al. (2008) referred to it as \"mineral HA\". In the IMA list of unnamed minerals it is listed in the invalid minerals under the code UM2008-\u002F\u002F-?[5].","The name honours Sveinn Peter Jakobsson (20 July 1939, Reykjavík, Iceland - 12 July 2016, Iceland), volcanologist at the Icelandic Institute of Natural History, who was the first person to recognize it.","2025-08-11 12:15:09",[],[],[58],{"id":59,"name":60,"entrytype":9,"csystem":61,"ima_formula":62,"mindat_formula":63,"hmin":29,"hmax":29,"dmeas":64,"dcalc":65,"primary_image_id":66},3354,"Hydrokenoralstonite","Isometric","◻\u003Csub>2\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>F\u003Csub>6\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)"," Na\u003Csub>0.5\u003C\u002Fsub>(Al,Mg)\u003Csub>2\u003C\u002Fsub>(F,OH)\u003Csub>6\u003C\u002Fsub>·H\u003Csub>2\u003C\u002Fsub>O ","2.56","0",11883,[],[69,75],{"id":70,"txt":71,"latitude":72,"longitude":73,"country":74},1985,"Hekla, Rangárþing ytra, Southern Region, Iceland",63.9926385,-19.6657848,"Iceland",{"id":76,"txt":77,"latitude":78,"longitude":79,"country":74},180793,"Eldfell Volcano, Heimaey Island, Vestmannaeyjar archipelago (Westman islands), Vestmannaeyjar, Southern Region, Iceland",63.4336111,-20.2488889,[81,86,90,94,98],{"id":82,"year":83,"html":84,"doi":85},213825,1991,"Hemon, A., Courbion, G. (1991) Refinement of a room-temperature structure of α-CaAlF5. \u003Ci>Acta Crystallographica Section C Crystal Structure Communications\u003C\u002Fi>,  47 (6) 1302-1303 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs0108270190013956'>doi:10.1107\u002Fs0108270190013956\u003C\u002Fa>","10.1107\u002Fs0108270190013956",{"id":87,"year":88,"html":89,"doi":11},16139044,2008,"Jakobsson, S.P., Leonardsen, E.S., Balić-Žunić, T., Jonsson, S.S. (2008) \u003Ci>Encrustations from three recent volcanic eruptions in Iceland: the 1963-\u00021967 Surtsey, the 1973 Eldfell and the 1991 Hekla eruptions\u003C\u002Fi>. Fjölrit Náttúrufraedistofnunar:. p.1-65.",{"id":91,"year":22,"html":92,"doi":93},244172,"Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011, CNMNC Newsletter No. 10. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  75 (5) 2549-2561 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2011.075.5.2549'>doi:10.1180\u002Fminmag.2011.075.5.2549\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fuploads\u002FMM75_2549.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.2011.075.5.2549",{"id":95,"year":23,"html":96,"doi":97},244248,"Balić-Žunić, T., Garavelli, A., Mitolo, D., Acquafredda, P., Leonardsen, E. (2012) Jakobssonite, CaAlF\u003Csub>5\u003C\u002Fsub>, a new mineral from fumaroles at the Eldfell and Hekla volcanoes, Iceland. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  76 (3) 751-760 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2012.076.3.22'>doi:10.1180\u002Fminmag.2012.076.3.22\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FMM76_751.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.2012.076.3.22",{"id":99,"year":100,"html":101,"doi":11},16965087,2015,"(2015) Jakobssonite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fjakobssonite.pdf' class='refpdflink'>\u003C\u002Fa>",[],[104,110],{"id":105,"url":106,"label":107,"formula":108,"spacegroup":109,"year":23},6822,"\u002Fcif\u002F6822.cif","Balic-Zunic 2012","Ca.66 Al F5","C 1 2\u002Fc 1",{"id":111,"url":112,"label":113,"formula":114,"spacegroup":109,"year":83},6823,"\u002Fcif\u002F6823.cif","Hemon 1991","Ca Al F5",[116,117,118,119],"IMA2011-036","Jakobssoniet","UM2010-01-F:AlCa","Unnamed (Ca-Al Fluoride)",[121,125,130,134],{"lang":122,"names":123},"ca",[124],"jakobssonita",{"lang":126,"names":127},"de",[128,129],"IMA 2011-036","Jakobssonit",{"lang":131,"names":132},"eu",[133],"Jakobssonita",{"lang":135,"names":136},"it",[137],"jakobssonite","Q19860853",{"history":11,"applications":11}]