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(1855) Mineralogiske Iagttagelser omkring Arendal og Kragerö [Mineralogical observations around Arendal and Kragerö]. \u003Ci>Nyt magazin for naturvidenskaberne [New magazine for the natural sciences]\u003C\u002Fi>,  8. 213-229",{"id":60,"year":61,"html":62,"doi":8},17230803,1857,"Forbes, David, Dahll, T. (1857) Mineralogiske Iagttagelser omkring Arendal og Kragerø (Fortsættelse) [Mineralogical Observations around Arendal and Kragerø (Continuation)]. \u003Ci>Nyt magazin for naturvidenskaberne [New magazine for the natural sciences]\u003C\u002Fi>,  9. 14-20",{"id":64,"year":65,"html":66,"doi":8},17475812,1923,"Goldschmidt, V. M., Thomassen, L. (1923) Das Vorkommen des Elements No. 72 (Hafnium) im Malakon und Alvit [The occurrence of element No. 72 (Hafnium) in Malakon and Alvite]. \u003Ci>Norsk Geologisk Tidsskrift [Norwegian Journal of Geology]\u003C\u002Fi>,  7 (1) 61-68 \u003Ca target='_blank' href='https:\u002F\u002Fforeninger.uio.no\u002Fngf\u002Fngt\u002Fpdfs\u002FNGT_07_1_061-068.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":68,"year":69,"html":70,"doi":8},12986020,1993,"Clark, A. M. (1993) \u003Ci>Hey's Mineral Index\u003C\u002Fi> - Mineral Species, Varieties and Synonyms (3rd ed.). Natural History Museum.",{"id":72,"year":73,"html":74,"doi":8},12991698,1996,"Raade, Gunnar (1996) Minerals originally described from Norway. Including notes on type material. \u003Ci>Norsk Bergverksmuseum Skrift\u003C\u002Fi> Vol. 11",[76],{"id":77,"source_url":78,"license_code":79,"credit_html":80,"title":81,"description":82,"author":83,"original_width":84,"original_height":85},10680,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=66681716","CC BY-SA 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=66681716\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Alvite.jpg","Brown isolated crystal group of alvite, a variety of zircon rich in Hafnium (Hf). Hafnium is one of the rarest chemical elements in minerals, since only one mineral (from more than 5000 known minerals) have hafnium in their chemical composition (hafnon). From: Tangen Feldspar Mine, Kragerø, Telemark, Norway.","David Hospital",904,667,[],[88,89,90],"Alvit","Alvita","Alvitt",[],{"history":8,"applications":8}]