__TOC__
U
Uakitite (nitride, rocksalt: IMA2018-003) 1.0 [no] [no] Uchucchacuaite (lillianite: IMA1981-007) 2.JB.40a (AgMnPb3Sb5S12) Udinaite (IMA2018-066) 8.0 [no] [no] (IUPAC: sodium tetramagnesium trivanadate) UdumineliteQ (Y: 1950) 8.DM.30 [no] [no] Uedaite-(Ce) (epidote: IMA2006-022) 9.BG.05 Uklonskovite (IMA1967 s.p., 1964) 7.DF.05 Ulexite (Y: 1850) 6.EA.25 (IUPAC: sodium calcium hexahydro hexaoxopentaborate pentahydrate) Ulfanderssonite-(Ce) (IMA2016-107) 9.0 [no] [no] Ullmannite (ullmannite: 1843) 2.EB.25 (IUPAC: nickel sulfantimonide) Ulrichite (IMA1988-006) 8.EA.15 Ulvöspinel (spinel, spinel: 1946) 4.BB.05 (IUPAC: diiron(II) titanum tetraoxide) Umangite (Y: 1891) 2.BA.25 (IUPAC: tricopper diselenide) Umbite (umbite: IMA1982-006) 9.DG.25 Umbozerite (IMA1973-039) 9.HG.15 Umbrianite (phyllosilicate: IMA2011-074) 9.E?. [no] [no] Umohoite (Y: 1953) 4.GC.10 (IUPAC: uranyl molybdate dihydrate) Ungavaite (IMA2004-020) 2.AC.35b (IUPAC: tetrapalladium triantimonide) Ungemachite (Y: 1938) 7.DG.10 (IUPAC: tripotassium octasodium iron(III) hexasulfate dinitrate hexahydrate) Upalite (IMA1978-045) 8.EC.05 (IUPAC: aluminium triuranyl oxyhydro diphosphate heptahydrate) Uralborite (Y: 1961, 1967 s.p.) 6.DA.35 (IUPAC: calcium tetrahydro dioxodiborate) Uralolite (Y: 1964) 8.DA.15 Uramarsite (meta-autunite: IMA2005-043) 8.EB.15 (IUPAC: ammonium uranyl arsenate trihydrate) Uramphite (natroautunite: 1957) 8.EB.15 (IUPAC: ammonium uranyl phosphate trihydrate) Urancalcarite (IMA1983-052) 5.EA.10 (IUPAC: calcium triuranyl hexahydro carbonate trihydrate) Uranoclite (IMA2020-074) 4.0 [no] [no] Uraninite (fluorite: 1845) 4.DL.05 (IUPAC: uranium dioxide) Uranocircite (Y: 1877) 8.EB.05 [no] [no] (IUPAC: barium diuranyl diphosphate decahydrate) Uranophane (Y: 1853) 9.AK.15 (IUPAC: calcium diuranyl di(hydrotrioxosilicate) pentahydrate) Uranopilite (Y: 1882) 7.EA.05 (IUPAC: hexauranyl dioxyhexahydro sulfate tetradecahydrate) Uranopolycrase (columbite: IMA1990-046) 4.DG.05 Uranosilite (IMA1981-066) 9.AK.40 Uranospathite (Y: 1915) 8.EB.25 Uranosphaerite (Y: 1873) 4.GB.65 (IUPAC: bismuth uranyl hydro dioxide) Uranospinite (Y: 1873) 8.EB.05 (IUPAC: calcium diuranyl diarsenate decahydrate) Uranotungstite (IMA1984-005) 7.HB.25 (IUPAC: iron diuranyl tetrahydro tungstanate dodecahydrate) Urea (IMA1972-031) 10.CA.35 Uricite (IMA1973-055) 10.CA.40 (IUPAC: uric acid) Uroxite (hydrous uranyl oxalate: IMA2018-100) 10.AB. [no] [no] Ursilite (Y: 1957) 9.AK.35 [no] Urusovite (IMA1998-067) 8.BB.60 [no] (IUPAC: copper aluminium oxoarsenate) Urvantsevite (IMA1976-025) 2.EB.30 () Ushkovite (laueite, laueite: IMA1982-014) 8.DC.30 (IUPAC: magnesium diiron(III) dihydro diphosphate octahydrate) Usovite (IMA1966-038) 3.CB.35 (IUPAC: dibarium calcium magnesium tetradecafluorodialuminate) Ussingite (Y: 1915) 9.EH.20 UstarasiteQ (Y: 1955) 2.JB.40e Usturite (garnet: IMA2009-053) 4.0 [no] [no] (IUPAC: tricalcium (antimony zirconium) tri(iron(III) tetraoxide)) Utahite (tellurium oxysalt: IMA1995-039) 7.DE.25 (IUPAC: pentacopper trizinc octahydro tetra(tetraoxotellurate(VI)) heptahydrate) UvaniteQ (Y: 1914) 4.HB.35 Uvarovite (garnet, garnet: IMA1967 s.p., 1832) 9.AD.25 (IUPAC: tricalcium dichromium tri(tetraoxysilicate)) Uvite (tourmaline: IMA2019-113) 9.CK. [no] [no] Uytenbogaardtite (IMA1977-018) 2.BA.75 (IUPAC: trisilver gold disulfide) Uzonite (IMA1984-027) 2.FA.25 (IUPAC: tetrarsenic pentasulfide)
V
Vaesite (pyrite: 1945) 2.EB.05a (IUPAC: nickel disulfide) Vajdakite (IMA1998-031) 4.JC.20 [no] (IUPAC: di(dioxomolybdate(VI)) diarsenic(III) pentaoxide trihydrate) Valentinite (IMA1980 s.p., 1845) 4.CB.55 (IUPAC: diantimony trioxide) Valleriite (valleriite: 1871) 2.FD.30 Valleyite (sodalite: IMA2017-026) 4.0 [no] [no] (IUPAC: tetracalcium hexairon tridecaoxide) Vanackerite (apatite: IMA2011-114) 8.0 [no] [no] (IUPAC: tetralead cadmium (chloro,hydro) triarsenate) Vanadinite (apatite: 1838) 8.BN.05 (IUPAC: pentalead chloro trivanadate) Vanadiocarpholite (carpholite: IMA2003-055) 9.DB.05 [no] (IUPAC: manganese(II) vanadium(III) aluminium hexaoxodisilicate tetrahydroxyl) Vanadio-oxy-chromium-dravite (tourmaline: IMA2012-034) 9.CK. [no] [no] Vanadio-oxy-dravite (tourmaline: IMA2012-074) 9.CK. [no] [no] Vanadiopargasite (Ca-amphibole: IMA2017-019) 9.D [no] [no] Vanadium (iron: IMA2012-021a) 1.AE. [no] [no] Vanadoallanite-(La) (epidote: IMA2012-095) 9.B?. [no] [no] Vanadoandrosite-(Ce) (epidote, allanite: IMA2004-015) 9.BG.05 Vanadomalayaite (titanite: IMA1993-032) 9.AG.15 [no] (IUPAC: calcium vanadium oxy(tetraoxysilicate)) Vanalite (IMA1967 s.p., 1962) 4.HG.15 Vanarsite (polyoxometalate: IMA2014-031) 4.0 [no] [no] Vandenbrandeite (Y: 1932) 4.GB.45 (IUPAC: copper uranyl tetrahydroxide) Vandendriesscheite (Y: 1947) 4.GB.40 Vanderheydenite (IMA2014-076) 8.0 [no] [no] (IUPAC: hexazinc diphosphate tetrahydro sulfate heptahydrate) Vandermeerscheite (IMA2017-104) 8.0 [no] [no] Vaniniite (IMA2017-116) 8.0 [no] [no] Vanmeersscheite (IMA1981-009) 8.EC.20 VanoxiteQ (Y: 1925) 4.HG.25 (IUPAC: tetravanadium(IV) divanadium(V) tridecaoxide octahydrate) Vantasselite (IMA1986-016) 8.DC.37 (IUPAC: tetraluminium trihydro triphosphate nonahydrate) Vanthoffite (Y: 1902) 7.AC.05 (IUPAC: hexasodium magnesium tetrasulfate) Vanuralite (IMA1967 s.p., 1963) 4.HB.20 (IUPAC: aluminium diuranyl hydro divanadate (8.5)hydrate) Vapnikite (double perovskite: IMA2013-082) 4.00. [no] (IUPAC: dicalcium calcium uranium hexaoxide) Varennesite (IMA1994-017) 9.EE.50 [no] Vargite (IMA2020-051) 8.DD. [no] [no] Variscite (IMA1967 s.p., 1837) 8.CD.10 (IUPAC: aluminium phosphate dihydrate) VarlamoffiteQ (rutile: 1947) 4.DB.05 [no] [no] Note: possibly a variety of cassiterite. Varulite (alluaudite: Rd 2019, 1937) 8.AC.10 (IUPAC: disodium manganese (manganese iron(III)) triphosphate) Vashegyite (Y: 1909) 8.DB.10 (IUPAC: undecaaluminium hexahydro nonaphosphate octatriacontahydrate) Vasilite (IMA1989-044) 2.BC.25 () Vasilseverginite (IMA2015-083) 8.0 [no] [no] (IUPAC: nonacopper tetraoxodiarsenate disulfate) Vasilyevite (IMA2003-016) 3.DD.45 [no] (IUPAC: deca(dimercury) hexaoxide triodine diboron chloro carbonate) Västmanlandite-(Ce) (gatelite: IMA2002-025) 9.BG.55 [no] Vaterite (IMA1962 s.p., 1911) 5.AB.20 (IUPAC: anhydrous calcium carbonate) Vaughanite (IMA1987-055) 2.LA.20 (TlHgSb4S7) Vauquelinite (Y: 1818) 7.FC.05 (IUPAC: copper dilead hydro chromate phosphate) Vauxite (Y: 1922) 8.DC.35 (IUPAC: iron(II) dialumium dihydro diphosphate hexahydrate) Vavřínite (IMA2005-045) 2.CC.30 [no] (IUPAC: dinickel antimonide ditelluride) Väyrynenite (Y: 1954) 8.BA.05 (IUPAC: beryllium manganese(II) hydro phosphate) Veatchite (Y: 1938) 6.EC.15 Veblenite (veblenite (Si8O22) ribbon: IMA2010-050) 9.0 [no] [no] Veenite (IMA1966-016) 2.HC.05d (IUPAC: dilead diantimonide pentasulfide) Velikite (stannite: IMA1996-052) 2.CB.15a (IUPAC: dicopper mercury tetrasulfa stannide) Vendidaite (IMA2012-089) 7.0 [no] [no] (IUPAC: dialuminium trihydro chloro sulfate hexahydrate) Verbeekite (IMA2001-005) 2.EA.25 (IUPAC: lead diselenide) Verbierite (humite: IMA2015-089) 4.0 [no] [no] (IUPAC: beryllium dichromium(III) titanium hexaoxide) Vergasovaite (vergasovaite: IMA1998-009) 7.BB.30 (IUPAC: tricopper oxomolybdate sulfate) Vermiculite (smectite-vermiculite: 1824) 9.EC.50 VernaditeQ (Y: 1937) 4.FE.40 Note: possibly random-stacked birnessite. Verneite (IMA2016-112) 3.0 [no] [no] (IUPAC: disodium tricalcium dialuminium tetradecafluoride) Verplanckite (IMA1964-011) 9.CE.10 Versiliaite (IMA1978-068) 4.JA.30 Vertumnite (IMA1975-043) 9.EG.25 Veselovskýite (lindackerite: IMA2005-053) 8.CE.30 [no] Vésigniéite (Y: 1955) 8.BH.45 (IUPAC: tricopper barium dihydro divanadate) Vestaite (IMA2017-068) 4. [no] [no] Vesuvianite (vesuvianite: IMA1962 s.p., 1795) 9.BG.35 Veszelyite (Y: 1874) 8.DA.30 (IUPAC: di(copper,zinc) zinc trihydro phosphate dihydrate) Viaeneite (IMA1993-051) 2.FD.10 Vicanite-(Ce) (okanoganite: IMA1991-050) 9.AJ.35 [no] Vigezzite (aeschnyite: IMA1977-008) 4.DF.05 Vigrishinite (seidozerite, murmanite: IMA2011-073) 9.B?. [no] Vihorlatite (IMA1988-047) 2.DC.05 [no] (Bi24Se17Te4) Viitaniemiite (IMA1977-043) 8.BL.15 (IUPAC: sodium calcium aluminium trifluoro phosphate) Vikingite (lillianite: IMA1976-006) 2.JB.40a (Ag5Pb8Bi13S30) Villamanínite (pyrite: IMA1989 s.p., 1920 Rd) 2.EB.05a (IUPAC: copper disulfide) Villiaumite (halite, rocksalt: 1908) 3.AA.20 (IUPAC: sodium fluoride) Villyaellenite (hureaulite: IMA1983-008a) 8.CB.10 Vimsite (IMA1968-034) 6.BC.15 (IUPAC: calcium dioxotetrahydro diborate) Vincentite (IMA1973-051) 2.AC.05b (IUPAC: tripalladium arsenide) Vinciennite (IMA1983-031) 2.CB.35a (Cu10Fe4SnAsS16) Vinogradovite (Y: 1956) 9.DB.25 Violarite (spinel, linnaeite: 1889) 2.DA.05 (IUPAC: iron(II) dinickel(III) tetrasulfide) Virgilite (quartz: IMA1977-009) 9.FA.15 Vishnevite (cancrinite: 1944) 9.FB.05 (IUPAC: octasodium (hexaluminohexasilicate) tetraicosaoxosulfate dihydrate) Vismirnovite (schoenfliesite: IMA1980-029) 4.FC.10 (IUPAC: zinc tin hexahydroxide) Vistepite (IMA1991-012) 9.BD.25 (IUPAC: tetramanganese tin dioxodiborate di(heptaoxodisilicate) dihydroxyl) Viteite (IMA2019-040) 2.0 [no] [no] Vitimite (IMA2001-057) 6.H0.45 [no] (IUPAC: hexacalcium [tetradecahydroxide|sulfate|nonadecaoxotetradecaborate] pentahydrate) Vittinkiite (IMA2017-082a) 9.0 [no] [no] (MnMn3MnSi5O15) Vitusite-(Ce) (IMA1976-055) 8.AC.35 (IUPAC: trisodium cerium diphosphate) Vivianite (vivianite: 1817) 8.CE.40 (IUPAC: triiron(II) diphosphate octahydrate) Vladimirite (IMA1964 s.p., 1953 Rd) 8.CJ.25 (IUPAC: tetracalcium diarsenate hydroxoarsenate(V) tetrahydrate) Vladimirivanovite (sodalite: IMA2010-070) 9.FB. [no] Vladkrivovichevite (IMA2011-020) 3.D?. [no] Vladykinite (IMA2011-052) 9.0 [no] [no] (IUPAC: trisodium tetrastrontium (iron(II) iron(III)) tetraicosaoxyctasiliate) Vlasovite (IMA1967 s.p., 1961) 9.DM.25 (IUPAC: disodium zirconium undecaoxotetrasilicate) Vlodavetsite (IMA1993-023) 7.DF.40 (IUPAC: dicalcium aluminium difluoro chloro disulfate tetrahydrate) Vochtenite (IMA1987-047) 8.EB.30 Voggite (IMA1988-037) 8.DO.10 (IUPAC: disodium zirconium hydro phosphate carbonate dihydrate) Voglite (Y: 1853) 5.EE.05 (IUPAC: dicalcium copper uranyl tetracarbonate hexahydrate) Volaschioite (IMA2010-005) 7.DE.62 [no] (IUPAC: tetrairon dioxohexahydro sulfate dihydrate) Volborthite (IMA1968 s.p., 1838) 8.FD.05 (IUPAC: tricopper dihydro heptaoxodivanadate dihydrate) Volkonskoite (montmorillonite, smectite: IMA1987 s.p., 1831 Rd) 9.EC.40 Volkovskite (IMA1968 s.p., 1966) 6.EC.20 Voloshinite (mica: IMA2007-052) 9.0 [no] Voltaite (voltaite: 1841) 7.CC.25 (IUPAC: dipotassium pentairon(II) triiron(III) aluminium dodecasulfate octadecahydrate) Volynskite (IMA1968 s.p., 1966) 2.JA.20 (IUPAC: silver bismuth ditelluride) Vonbezingite (IMA1991-031) 7.DD.65 (IUPAC: hexacalcium tricopper dodecahydro trisulfate dihydrate) Vonsenite (ludwigite: 1920) 6.AB.30 (IUPAC: diiron(II) iron(III) dioxo(trioxoborate)) Vorlanite (fluorite: IMA2009-032) 4.0 [no] [no] (IUPAC: calcium uranium(VI) tetraoxide) Voronkovite (eudialyte: IMA2007-023) 9.CO.10 [no] Vorontsovite (tennantite: IMA2016-076) 2.0 [no] [no] (IUPAC: (pentamercury copper) thallium dodecasulfa tetraarsenide) Voudourisite (kieserite: IMA2012-042) 7.0 [no] [no] (IUPAC: cadmium sulfate monohydrate) Vozhminite (IMA1981-040) 2.BB.05 (IUPAC: tetranickel disulfarsenide) Vránaite (anhydrous aluminoborosilicate: IMA2015-084) 9.0 [no] [no] Vrbaite (Y: 1912) 2.HF.20 (Hg3Tl4As8Sb2S20) Vuagnatite (adelite: IMA1975-007) 9.AG.60 (IUPAC: calcium aluminium hydrotetraoxysilicate) Vulcanite (IMA1967 s.p., 1961) 2.CB.75 (IUPAC: copper(I) telluride) Vuonnemite (seidozerite, lamprophyllite: IMA1973-015) 9.BE.35 (IUPAC: hexasodium disodium diniobium trisodium titanium di(heptaoxodisilicate) diphosphate dioxy(oxyfluoride)) Vuorelainenite (spinel, spinel: IMA1980-048) 4.BB.05 (IUPAC: manganese(II) divanadium(III) tetraoxide) Vuoriyarvite-K (labuntsovite: IMA1995-031) 9.CE.30b [no]