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H\u003Csub>2\u003C\u002Fsub>O","PbCuAl(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>OH&middot;H\u003Csub>2\u003C\u002Fsub>O ",{"id":214,"name":215,"entrytype":9,"csystem":64,"ima_formula":216,"mindat_formula":216,"hmin":82,"hmax":82,"dmeas":44,"dcalc":217,"primary_image_id":218},7043,"Zincgartrellite","PbZn\u003Csub>2\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(H\u003Csub>2\u003C\u002Fsub>O,OH)\u003Csub>2\u003C\u002Fsub>","5.30",28771,[],[],[222],{"id":223,"txt":224,"latitude":225,"longitude":226,"country":227},1750,"Mounana Mine, Mounana, Léboumbi-Leyou Department, Haut-Ogooué Province, Gabon",-1.4333333,13.15,"Gabon",[229,234,237,241,246],{"id":230,"year":231,"html":232,"doi":233},401864,1969,"Cesbron, Fabien, Fritsche, Jean (1969) La mounanaïte, nouveau vanadate de fer et de plomb hydraté. \u003Ci>Bulletin de Minéralogie\u003C\u002Fi>,  92 (2). 196-202 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3406\u002Fbulmi.1969.6337'>doi:10.3406\u002Fbulmi.1969.6337\u003C\u002Fa>","10.3406\u002Fbulmi.1969.6337",{"id":235,"year":231,"html":236,"doi":11},525294,"Fleischer, Michael (1969) New Mineral Names. \u003Ci>American Mineralogist\u003C\u002Fi>,  54 (11-12) 1737-1742 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM54\u002FAM54_1737.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":238,"year":239,"html":240,"doi":11},1118654,1997,"Gaines, Richard V.; Skinner, H. Catherine W.; Foord, Eugene E.; Mason, Brian; Rosenzweig, Abraham; King, Vandall T. (1997) \u003Ci>Dana's New Mineralogy\u003C\u002Fi> (8th ed.). Wiley-Interscience. 1872 pp.",{"id":242,"year":243,"html":244,"doi":245},127636,1998,"Krause, Werner, Belendorff, Klaus, Bernhardt, Heinz-Jürgen, Mccammon, Catherine, Effenberger, Herta, Mikenda, Werner (1998) Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  10 (2). 179-206 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002Fejm\u002F10\u002F2\u002F0179'>doi:10.1127\u002Fejm\u002F10\u002F2\u002F0179\u003C\u002Fa>","10.1127\u002Fejm\u002F10\u002F2\u002F0179",{"id":247,"year":248,"html":249,"doi":11},16966136,2005,"(2005) Mounanaite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fmounanaite.pdf' class='refpdflink'>\u003C\u002Fa>",[251,261,269,277],{"id":252,"source_url":253,"license_code":254,"credit_html":255,"title":256,"description":257,"author":258,"original_width":259,"original_height":260},6706,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120112","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120112\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Francevillite-Mounanaite-Curienite-20877.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFrancevillite\" class=\"extiw\" title=\"en:Francevillite\">Francevillite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMounanaite\" class=\"extiw\" title=\"en:Mounanaite\">Mounanaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCurienite\" class=\"extiw\" title=\"en:Curienite\">Curienite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Mounana Mine (Mouana Mine), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFranceville\" class=\"extiw\" title=\"en:Franceville\">Franceville\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHaut-Ogoou%C3%A9_Province\" class=\"extiw\" title=\"en:Haut-Ogooué Province\">Haut-Ogooué Province\u003C\u002Fa>, Gabon (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-1750.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A rich miniature-sized specimen of incredible aesthetic and scientific quality. This piece features INDIVIDUAL and ISOLATED , RELATIVELY LARGE crystals of Francevillite to several mm in size, on an attractive matrix plate - and the back side is as good as the front side! Tiny yellow-gemmy crystals of mounanaite are so abundant and rich on this specimen that they are easily eye-visible against the larger francevillites, as shown in my pics. Characteristically powdery microcrystals of orangey-yellow curienite are in association , as well. This mine closed in 1999 after 40 years of production, and this is, for quality if not size, pretty much as good as the mineral gets. It is a trim from the large specimen I obtained, below. Note that this its the type locality of ALL THREE species! 4 x 3.5 x 1 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",750,563,{"id":262,"source_url":263,"license_code":254,"credit_html":264,"title":265,"description":266,"author":258,"original_width":267,"original_height":268},16787,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120115","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120115\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Francevillite-Mounanaite-Curienite-20878.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFrancevillite\" class=\"extiw\" title=\"en:Francevillite\">Francevillite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMounanaite\" class=\"extiw\" title=\"en:Mounanaite\">Mounanaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCurienite\" class=\"extiw\" title=\"en:Curienite\">Curienite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Mounana Mine (Mouana Mine), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFranceville\" class=\"extiw\" title=\"en:Franceville\">Franceville\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHaut-Ogoou%C3%A9_Province\" class=\"extiw\" title=\"en:Haut-Ogooué Province\">Haut-Ogooué Province\u003C\u002Fa>, Gabon (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-1750.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A rich miniature-sized specimen of incredible richness for the species, featuring RELATIVELY LARGE crystals of Francevillite to several mm in size completely coating a thin matrix plate. Characteristically powdery microcrystals of orangey-yellow curienite are abundant in association , as well. This mine closed in 1999 after 40 years of production, and this is, for quality if not size, pretty much as good as the mineral gets. This particular specimen comes from the Sorbonne (with a xerox label to this effect). Note that this its the type locality of BOTH species! 4.5 x 4 x 0.6 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",652,562,{"id":270,"source_url":271,"license_code":254,"credit_html":272,"title":273,"description":274,"author":258,"original_width":275,"original_height":276},16788,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120116","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120116\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Francevillite-Mounanaite-Curienite-20879.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFrancevillite\" class=\"extiw\" title=\"en:Francevillite\">Francevillite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMounanaite\" class=\"extiw\" title=\"en:Mounanaite\">Mounanaite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCurienite\" class=\"extiw\" title=\"en:Curienite\">Curienite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Mounana Mine (Mouana Mine), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFranceville\" class=\"extiw\" title=\"en:Franceville\">Franceville\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHaut-Ogoou%C3%A9_Province\" class=\"extiw\" title=\"en:Haut-Ogooué Province\">Haut-Ogooué Province\u003C\u002Fa>, Gabon (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-1750.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A rich CABINET-sized specimen that is incredible for both its aesthetic and scientific qualities. This piece features INDIVIDUAL and ISOLATED , RELATIVELY LARGE crystals of Francevillite to several mm in size, on an attractive matrix plate! Tiny yellow-gemmy crystals of mounanaite are so abundant and rich on this specimen that they are easily eye-visible against the larger francevillites, as shown in my pics. Characteristically powdery microcrystals of orangey-yellow curienite are in association , as well, in scattered crystals and as a thick matte on the rightmost edge of the specimen. This mine closed in 1999 after 40 years of production, and this is, for quality if not size, pretty much as good as the mineral gets. Note that this its the type locality of ALL THREE species! 12.5 x 7 x 2.25 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",798,514,{"id":278,"source_url":279,"license_code":280,"credit_html":281,"title":282,"description":283,"author":284,"original_width":285,"original_height":286},16790,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84649743","CC BY 2.0","James St. John, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=84649743\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Francevillite-mounanaite (Mounana Mine, Franceville, Gabon, Africa) (31205942471).jpg","\u003Cp>Francevillite on mounanaite from Gabon, Africa. (Robert Lauf collection)\n\u003C\u002Fp>\u003Cp>A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties.  At its simplest, a mineral is a naturally-occurring solid chemical.  Currently, there are over 5100 named and described minerals - about 200 of them are common and about 20 of them are very common.  Mineral classification is based on anion chemistry.  Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.\n\u003C\u002Fp>\u003Cp>The vanadate minerals all have one or more vanadate ions (VO4 -3).\n\u003C\u002Fp>\u003Cp>Francevillite is a radioactive, hydrous barium uranyl vanadate mineral, Ba(UO2)2(VO4)2·5H2O.  It is the barium equivalent of carnotite.  The mineral is moderately soft and ranges in color from yellowish to yellowish-brown to greenish-yellow to orangish to reddish.\n\u003C\u002Fp>\u003Cp>Francevillite is one of several secondary uranium minerals.  It results from the alteration of uraninite (UO2) or other U- or V-bearing minerals.  Uranium-bearing minerals are soluble in water and acids.  Water percolating through uraniferous rocks will end up having dissolved U compounds.  These dissolved compounds precipitate elsewhere as secondary U minerals.\n\u003C\u002Fp>\u003Cp>The sample shown above has bright orange francevillite crystals atop dark brown mounanaite (= PbFe2(VO4)2(OH,F)2 - lead iron hydroxy-fluoro-vanadate).  This is from the type locality for both minerals.\n\u003C\u002Fp>\u003Cp>Locality: Mounana Mine, Franceville, Gabon, Africa\n\u003C\u002Fp>\n\u003Chr>\n\u003Cp>Photo gallery of francevillite:\n\u003C\u002Fp>\n&lt;a href=\"\u003Ca rel=\"nofollow\" class=\"external free\" href=\"http:\u002F\u002Fwww.mindat.org\u002Fgallery.php?min=1589\">http:\u002F\u002Fwww.mindat.org\u002Fgallery.php?min=1589\u003C\u002Fa>\" rel=\"nofollow\"&gt;www.mindat.org\u002Fgallery.php?min=1589&lt;\u002Fa&gt;","James St. John",1463,1010,[288],{"id":289,"url":290,"label":291,"formula":292,"spacegroup":293,"year":243},9604,"\u002Fcif\u002F9604.cif","Krause 1998","Pb Fe2 V2 (O10 H2)","C 1 2\u002Fm 1",[295,296],"IMA1968-031","Mounanaiet",[298,302,307,311,314,317],{"lang":299,"names":300},"ca",[301],"mounanaïta",{"lang":303,"names":304},"de",[305,306],"IMA 1968-031","Mounanait",{"lang":308,"names":309},"eu",[310],"Mounanaita",{"lang":312,"names":313},"fr",[7],{"lang":315,"names":316},"it",[7],{"lang":318,"names":319},"pl",[306],"Q3325956",{"history":11,"applications":11}]