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Also as exsolution lamellae along\r\n{111} in magnetite.","Occurs along octahedral planes in magnetite and less commonly as subhedral isolated crystals.",4.5,5,"5.17","5.20","5.15","Metallic","Opaque","Dark brown to black","Bluish gray; light gray in reflected light",[50,51,52,53],"gray","blue","brown","black",[52,53],"brittle","Isotropic, but locally slightly anisotropic.\r\n\r\nThe type description gives a higher reflectivity, with a mean value of ~23.5%.","Isotropic","16.64 (400),\r\n16.44 (420),\r\n16.28 (440),\r\n16.21 (460),\r\n16.18 (480),\r\n16.18 (500),\r\n16.23 (520),\r\n16.3 (540),\r\n16.38 (560),\r\n16.46 (580),\r\n16.54 (600),\r\n16.67 (620),\r\n16.83 (640),\r\n17.03 (660),\r\n17.26 (680),\r\n17.5 (700)","Metamorphosed igneous rocks. Hornblende andesite.","Initially described from Bihar, India in 1936 as vanado-magnetite, renamed the following year as coulsonite (these specimens contain up to 4.84% vanadium). 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Vista Iron Mine, Mineral Basin Mining District, Churchill County, Nevada, USA",39.9738889,-118.1683333,"USA",15,[240,244,247,251,255,259,263,267,271,276,281],{"id":241,"year":242,"html":243,"doi":11},15957273,1937,"Dunn, J.A. (1937) Coulsonite. Memoirs of the Geological Survey of India: 69: 21-21.",{"id":245,"year":242,"html":246,"doi":11},15957274,"Dunn and Dey (1937) Mining Geol. Institute of India, Transactions: 31: 131.",{"id":248,"year":249,"html":250,"doi":11},16106673,1951,"Wyckoff, R.W.G. (1951) Crystal Structures, Vol 2. New York: Interscience Publishers, pg 43.",{"id":252,"year":253,"html":254,"doi":11},16106674,1954,"Richardson, H.M., Ball, F., Rigby, G.R. (1954) The preparation and properties of vanadium spinels. Transactions of the British Ceramic Society, 53, 376-387.",{"id":256,"year":257,"html":258,"doi":11},523796,1962,"Radtke, Arthur S. (1962) Coulsonite, FeV2O4, a spinel-type mineral from Lovelock, Nevada. \u003Ci>American Mineralogist\u003C\u002Fi>,  47 (11-12) 1284-1291 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM47\u002FAM47_1284.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":260,"year":261,"html":262,"doi":11},523873,1963,"Fleischer, Michael (1963) New Mineral Names. \u003Ci>American Mineralogist\u003C\u002Fi>,  48 (3-4) 433-436 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM48\u002FAM48_433.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":264,"year":265,"html":266,"doi":11},16106675,1969,"Reuter, B., Riedel, E., Hug, P., Arndt, D., Geisler, U., Behnke, J. (1969) Zur kristallchemie der vanadin(III)-spinelle. Zeitschrift für Anorganische und Allgemeine Chemie: 369: 306-312.",{"id":268,"year":269,"html":270,"doi":11},16963816,2005,"(2005) Coulsonite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fcoulsonite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":272,"year":273,"html":274,"doi":275},500694,2012,"Karpov, S. M., Voloshin, A. V., Savchenko, Ye. E., Selivanova, E. A., Polekhovskii, Yu. S. (2012) Coulsonite in the pyrrhotite canyon deposit (Kola Peninsula): The first find in Russia. \u003Ci>Doklady Earth Sciences\u003C\u002Fi>,  446 (1) 1064-1066 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1134\u002Fs1028334x12070136'>doi:10.1134\u002Fs1028334x12070136\u003C\u002Fa>","10.1134\u002Fs1028334x12070136",{"id":277,"year":278,"html":279,"doi":280},14237301,2015,"Sinclair, R.; Ma, J.; Cao, H. B.; Hong, T.; Matsuda, M.; Dun, Z. L.; Zhou, H. D. (2015) Evolution of the magnetic and structural properties of Fe1−xCoxV2O4. \u003Ci>Physical Review B\u003C\u002Fi>,  92 (13). 134410 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1103\u002Fphysrevb.92.134410'>doi:10.1103\u002Fphysrevb.92.134410\u003C\u002Fa>","10.1103\u002Fphysrevb.92.134410",{"id":282,"year":283,"html":284,"doi":285},13422972,2020,"Kompanchenko, Alena A. (2020) Coulsonite FeV2O4—A Rare Vanadium Spinel Group Mineral in Metamorphosed Massive Sulfide Ores of the Kola Region, Russia. \u003Ci>Minerals\u003C\u002Fi>, 10 (10) 843 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3390\u002Fmin10100843'>doi:10.3390\u002Fmin10100843\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Fwww.mdpi.com\u002F2075-163X\u002F10\u002F10\u002F843\u002Fpdf?version=1602660636' class='refpdflink'>\u003C\u002Fa>","10.3390\u002Fmin10100843",[],[288],{"id":289,"url":290,"label":291,"formula":292,"spacegroup":293,"year":265},3280,"\u002Fcif\u002F3280.cif","Reuter 1969","Fe V2 O4","F d 3 m",[295],"Coulsoniet",[297,301,306,310,313],{"lang":298,"names":299},"ca",[300],"coulsonita",{"lang":302,"names":303},"de",[304,305],"Coulsonit","Vanadomagnetit",{"lang":307,"names":308},"eu",[309],"Coulsonita",{"lang":311,"names":312},"it",[7],{"lang":314,"names":315},"ru",[316],"Кульсонит","Q3696040",{"history":11,"applications":11}]