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As a yellow efflorescence on sandstone (North Star mine).","2.53","Translucent","Bright orange, yellow",[52,53],"orange","yellow","Biaxial","-","1.81",1.81,"r > v","Soluble in H2O","Leached from vanadium oxide ores.","Harvard University, Cambridge, Massachusetts, USA, 102345.\r\nNational Museum of Natural History, Washington, D.C., USA, 106899.","A common post-mining decavanadate mineral in sandstone-hosted uranium deposits.","Named in 1951 by Alice D. Weeks, Evelyn A. Cisney, and Alexander M. Sherwood for the type locality of Hummer Mine, Colorado.","2026-01-15 14:16:34",[],[67,77,86,94],{"id":68,"name":69,"entrytype":9,"csystem":37,"ima_formula":70,"mindat_formula":71,"hmin":72,"hmax":73,"dmeas":74,"dcalc":75,"primary_image_id":76},1941,"Huemulite","Na\u003Csub>4\u003C\u002Fsub>MgV\u003Csup>5+\u003C\u002Fsup>\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub> · 24H\u003Csub>2\u003C\u002Fsub>O","Na\u003Csub>4\u003C\u002Fsub>Mg(V\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub>)·24H\u003Csub>2\u003C\u002Fsub>O",2.5,3,"2.39","2.404",11694,{"id":78,"name":79,"entrytype":9,"csystem":80,"ima_formula":81,"mindat_formula":82,"hmin":72,"hmax":11,"dmeas":83,"dcalc":84,"primary_image_id":85},32206,"Magnesiopascoite","Monoclinic","Ca\u003Csub>2\u003C\u002Fsub>MgV\u003Csup>5+\u003C\u002Fsup>\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub> · 16H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Mg(V\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub>)·16H\u003Csub>2\u003C\u002Fsub>O","2.43","2.442",15104,{"id":87,"name":88,"entrytype":9,"csystem":80,"ima_formula":89,"mindat_formula":90,"hmin":72,"hmax":72,"dmeas":91,"dcalc":92,"primary_image_id":93},3130,"Pascoite","Ca\u003Csub>3\u003C\u002Fsub>V\u003Csup>5+\u003C\u002Fsup>\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub> · 17H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>2\u003C\u002Fsub>Ca(V\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub>)·17H\u003Csub>2\u003C\u002Fsub>O","2.455","2.465",18856,{"id":95,"name":96,"entrytype":9,"csystem":80,"ima_formula":97,"mindat_formula":98,"hmin":99,"hmax":99,"dmeas":11,"dcalc":100,"primary_image_id":101},40447,"Rakovanite","(NH\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>Na\u003Csub>3\u003C\u002Fsub>[V\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub>] · 12H\u003Csub>2\u003C\u002Fsub>O","(NH\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>Na\u003Csub>3\u003C\u002Fsub>(V\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub>)·12H\u003Csub>2\u003C\u002Fsub>O",1,"2.407",20496,[103,114],{"id":104,"name":105,"entrytype":9,"csystem":106,"ima_formula":107,"mindat_formula":108,"hmin":109,"hmax":110,"dmeas":111,"dcalc":112,"primary_image_id":113},2769,"Montroseite","Orthorhombic","(V\u003Csup>3+\u003C\u002Fsup>,Fe\u003Csup>2+\u003C\u002Fsup>,V\u003Csup>4+\u003C\u002Fsup>)O(OH)","(V\u003Csup>3+\u003C\u002Fsup>,Fe\u003Csup>3+\u003C\u002Fsup>)O(OH)",5.5,6.5,"4.0","4.11",16684,{"id":115,"name":116,"entrytype":9,"csystem":37,"ima_formula":117,"mindat_formula":118,"hmin":38,"hmax":73,"dmeas":119,"dcalc":120,"primary_image_id":121},3460,"Rossite","Ca(VO\u003Csub>3\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> · 4H\u003Csub>2\u003C\u002Fsub>O","Ca(VO\u003Csub>3\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·4H2O","2.45","2.42",21172,[],[124],{"id":125,"txt":126,"latitude":127,"longitude":128,"country":129},3656,"Hummer Mine, Paradox Valley, Montrose County, Colorado, USA",38.2307261,-108.7534904,"USA",23,[132,135,140,145],{"id":133,"year":29,"html":134,"doi":11},524451,"Hurlbut, C. S. Jr. (1951) Proceedings of the thirty-first annual meeting of the Mineralogical Society of America at Washington, D. C. \u003Ci>American Mineralogist\u003C\u002Fi>,  36 (3-4) 304-328 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM36\u002FAM36_304.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":136,"year":137,"html":138,"doi":139},63714,2002,"Hughes, J. M., Schindler, M., Rakovan, J., Cureton, F. E. (2002) The crystal structure of hummerite, KMg(V\u003Csub>5\u003C\u002Fsub>O\u003Csub>14\u003C\u002Fsub>)·8H\u003Csub>2\u003C\u002Fsub>O: bonding between the [V\u003Csub>10\u003C\u002Fsub>O\u003Csub>28\u003C\u002Fsub>]\u003Csup>6-\u003C\u002Fsup> structural unit and the {K\u003Csub>2\u003C\u002Fsub>Mg\u003Csub>2\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O)\u003Csub>16\u003C\u002Fsub>}\u003Csup>6+\u003C\u002Fsup> interstitial complex. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  40 (5) 1429-1435 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2113\u002Fgscanmin.40.5.1429'>doi:10.2113\u002Fgscanmin.40.5.1429\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002Fcm\u002Fvol40\u002FCM40_1429.pdf' class='refpdflink'>\u003C\u002Fa>","10.2113\u002Fgscanmin.40.5.1429",{"id":141,"year":142,"html":143,"doi":144},16387206,2004,"Frost, Ray L, Erickson, Kristy L, Weier, Matt L (2004) Hydrogen bonding in selected vanadates: a Raman and infrared spectroscopy study. \u003Ci>Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy\u003C\u002Fi>, 60 (10) 2419-2423 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.saa.2003.12.017'>doi:10.1016\u002Fj.saa.2003.12.017\u003C\u002Fa>","10.1016\u002Fj.saa.2003.12.017",{"id":146,"year":147,"html":148,"doi":11},16964911,2021,"(2021) Hummerite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002FHummerite.pdf' class='refpdflink'>\u003C\u002Fa>",[150,160],{"id":151,"source_url":152,"license_code":153,"credit_html":154,"title":155,"description":156,"author":157,"original_width":158,"original_height":159},11733,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=81239284","CC BY-SA 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=81239284\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Hummerite.jpg","Outstanding orange crystals of hummerite, a very rare K-Mg vanadium oxide, on a contrasting matrix. From: Lichtenberg Absetzer Dump, Ronneburg, Thuringia, Germany.","David Hospital",871,667,{"id":161,"source_url":162,"license_code":163,"credit_html":164,"title":165,"description":166,"author":167,"original_width":168,"original_height":169},11734,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=118199617","CC BY-SA 2.0","Pacific Museum of Earth from Canada, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=118199617\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Hummerite (48522536046).jpg","\u003Cp>Paradox Valley - Montrose County\n\u003C\u002Fp>\nColorado, USA","Pacific Museum of Earth from Canada",6000,4000,[171],{"id":172,"url":173,"label":174,"formula":175,"spacegroup":176,"year":137},6337,"\u002Fcif\u002F6337.cif","Hughes 2002","V5 O22 K Mg H16","P -1",[178],"Hummeriet",[180,184,188,192],{"lang":181,"names":182},"ca",[183],"hummerita",{"lang":185,"names":186},"de",[187],"Hummerit",{"lang":189,"names":190},"eu",[191],"Hummerita",{"lang":193,"names":194},"it",[7],"Q3787603",{"history":11,"applications":11}]