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","Distinct\u002FGood","Irregular\u002FUneven","brittle","Biaxial","-","1.470","1.495","1.510","74","50","70",1.47,1.51,"Weak.","X = b; Y ~ a; Z = c.","Dissolves in water (slowly at 20 °C and more rapidly at 50 °C).","The oxidation zone of a guano mining field ","Type material is deposited in the collections of the Mineralogical Museum of the University of Padova, Padova, Italy, catalogue number MMP M10009.","In honour of Dr. Thomas Witzke (b. 1963), German mineralogist, for his work on new, mainly secondary, mineral species.  He has authored\u002Fcoauthored descriptions of 18 new minerals as of 2021.","2025-08-11 12:15:09",[],[],[],[],[87],{"id":88,"txt":89,"latitude":90,"longitude":91,"country":92},236453,"Punta de Lobos, Iquique, Iquique Province, Tarapacá, Chile",-21.023984,-70.1764155,"Chile",[94,98,102],{"id":95,"year":29,"html":96,"doi":97},244205,"Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 12. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  76 (1) 151-155 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2012.076.1.151'>doi:10.1180\u002Fminmag.2012.076.1.151\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fuploads\u002FMM76_151.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.2012.076.1.151",{"id":99,"year":29,"html":100,"doi":101},396865,"Nestola, F., Camara, F., Chukanov, N. V., Atencio, D., Coutinho, J. M. V., Contreira Filho, R. R., Farber, G. (2012) Witzkeite: A new rare nitrate-sulphate mineral from a guano deposit at Punta de Lobos, Chile. \u003Ci>American Mineralogist\u003C\u002Fi>,  97 (10) 1783-1787 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2012.4109'>doi:10.2138\u002Fam.2012.4109\u003C\u002Fa>","10.2138\u002Fam.2012.4109",{"id":103,"year":104,"html":105,"doi":11},16968148,2017,"(2017) Witzkeite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fwitzkeite.pdf' class='refpdflink'>\u003C\u002Fa>",[107],{"id":108,"source_url":109,"license_code":110,"credit_html":111,"title":112,"description":113,"author":114,"original_width":115,"original_height":116},28158,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24390516","CC BY-SA 3.0","Thomas Witzke, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24390516\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Witzkeite - South slope Punta de Lobos, Tarapacá Region, Chile.jpg","White \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FWitzkeite\" class=\"extiw\" title=\"en:Witzkeite\">Witzkeite\u003C\u002Fa>, original material (Specimen size 17 mm)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Fundort: South slope Punta de Lobos, Tarapacá Region, Chile (21°01'26.38\u003Ci> S, 70°10'16.20\u003C\u002Fi> W)\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Thomas Witzke",600,450,[118],{"id":119,"url":120,"label":121,"formula":122,"spacegroup":123,"year":29},14548,"\u002Fcif\u002F14548.cif","Nestola 2012","Na4 K4 Ca Fe.05 S4 N2 O24 H4","C 1 2\u002Fc 1",[125,126],"IMA2011-084","Witzkeiet",[128,132,137,141],{"lang":129,"names":130},"ca",[131],"witzkeïta",{"lang":133,"names":134},"de",[135,136],"IMA 2011-084","Witzkeit",{"lang":138,"names":139},"eu",[140],"Witzkeita",{"lang":142,"names":143},"it",[144],"witzkeite","Q15854907",{"history":11,"applications":11}]