Mineralogy Database

U Listing of Minerals

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U Mineral Index (59 Count)

This alphabetical listing of U minerals include synonyms of accepted mineral names, pronunciation of that name, name origins, and locality information.

LEGEND: Valid Species (Bold);  Pronunciation;  Mineral Image;  Mineral Image Gallery;  jCrystal Form;  jPOWD Form;          Calculated Radioactive Intensity


Uedaite-(Ce)   Mn++CeAl2Fe++(Si2O7)(SiO4)O(OH) Approved IMA 2006 (Dana # Added)
NAME ORIGIN: Named for Tateo Ueda (1912-2000), who was the first to solve the crystal structure of allanite.
Uhligite - See Zirkelite
REMARKS: Perovskite or zirkelite (?)
Uhligite - See Perovskite
REMARKS: Perovskite or zirkelite (?)
Uhligite Say Uhligite  View Uhligite Image Ca3(Ti,Al,Zr)9O20 Discredited IMA 2006
NAME ORIGIN: Named for Alfred Louis Johannes Uhlig (1883-1919), German geologist, leader of the African expedition in which the material was first collected.
Uklonskovite Say Uklonskovite  View Uklonskovite Image  NaMg(SO4)F·2(H2O) Approved IMA 1964
NAME ORIGIN: Named for Aleksandr Sergeevich Uklonskii (1882-1972), mineralogist, Tashkent University, Tashkent, Uzbekistan, who studied central Asian mineral deposits.
Ulexite Say Ulexite  View Ulexite Image  NaCaB5O6(OH)6·5(H2O) Valid Species (Pre-IMA) 1850
NAME ORIGIN: Named after the German chemist, George Ludwig Ulex (1811-1883).
Ullmannite Say Ullmannite  View Ullmannite Image View Ullmannite Form  NiSbS Valid Species (Pre-IMA) 1843
NAME ORIGIN: Named after the German chemist and mineralogist, J. Ch. Ullmann (1771-1821).
Ulrichite Say Ulrichite  View Ulrichite Images Gallery   CaCu(UO2)(PO4)2·4(H2O) Approved IMA 1988
NAME ORIGIN: Named for G.H.F. Ulrich.
Ultamarine pigment - See Lazurite
Ulvite - See Ulvospinel
Ulvospinel Say Ulvospinel  View Ulvospinel Image  TiFe++2O4 Valid Species (Pre-IMA) 1943
NAME ORIGIN: Named after the locality and the spinel group of minerals. LOCALITY: Sodra Ulvön island, Angermanland, Sweden
Umangite Say Umangite  View Umangite Images Gallery  Cu3Se2 Valid Species (Pre-IMA) 1891
NAME ORIGIN: Named after the locality. LOCALITY: Sierra de Umango, La Rioja province in Argentina.
Umbite Say Umbite  View Umbite Image   K2ZrSi3O9·(H2O) Approved IMA 1983
NAME ORIGIN: Named for Lake Umbozero, which separates the Khibiny massif from the Lovozero massif, Kola Peninsula, Russia.
Umbozerite Say Umbozerite  View Umbozerite Image  Na3Sr4ThSi8(O,OH)24 Approved IMA 1974
NAME ORIGIN: Named for the locality. LOCALITY: Umbozero (Lake Umba), Kola Peninsula, Russia.
Umohoite Say Umohoite  View Umohoite Image   [(UO2)MoO4]·H2O Valid Species (Pre-IMA) 1953
NAME ORIGIN: Named for the composition of U, Mo, H.
Ungarettiite Say Ungarettiite  View Ungarettiite Image  NaNa2(Mn++2Mn+++3)Si8O22O2 Approved IMA 1995
NAME ORIGIN: Named after Prof. Luciano Ungaretti (1942-), Universita de Pavia, Pavia, Italy.
Ungavaite Pd4Sb3 Approved IMA 2004 (Dana # Added)
NAME ORIGIN: Named for the locality. LOCALITY: Mesamax Northwest deposit, Ungava region, Québec, Canada
Ungemachite Say Ungemachite  View Ungemachite Image View Ungemachite Form   K3Na8Fe+++(SO4)6(NO3)2·6(H2O) Valid Species (Pre-IMA) 1936
NAME ORIGIN: Named for Henri-Leon Ungemach (1879-1936), French mineralogist and crystallographer. Secretary of the French Society of Mineralogy from 1919 to 1934.
Ungursaite NaCa5(Ta,Nb)24O65(OH) Not Approved IMA 1988 - Published 1985
NAME ORIGIN: Named for the locality. LOCALITY: Ungursai, East Kazakhstan.
Upalite Say Upalite  View Upalite Image   Al(UO2)3(PO4)2O(OH)·7(H2O) Approved IMA 1979
NAME ORIGIN: Named for the Uranium, Phosphorus, and ALuminum in the composition.
Uralborite Say Uralborite  View Uralborite Image  CaB2O2(OH)4 Approved IMA 1961
NAME ORIGIN: Named for the original locality in the URAL Mountains, Russia, and BORate in its composition. LOCALITY: Novofrolovskoye copper deposit, near Krasnoturinsk, Turinsk district, Northern Ural Mountains, Russia.
Uralolite Say Uralolite  View Uralolite Image  Ca2Be4(PO4)3(OH)3·5(H2O) Approved IMA 1964
NAME ORIGIN: Named for the locality. LOCALITY: Boyevka, central Ural Mountains, Russia.
Uramarsite View Uramarsite Image   (NH4,H3O)2(UO2)2(AsO4,PO4)2·6H2O Approved IMA 2005 (Dana # Added)
NAME ORIGIN: Named for its composition of uranium, ammonium, and arsenic.
Uramphite Say Uramphite  View Uramphite Image   (NH4)(UO2)(PO4)·3(H2O) Valid Species (Pre-IMA) 1957
NAME ORIGIN: Named for the composition of (UR)anium and (AM)monium and (PH)osphate in the composition.
Urancalcarite Say Urancalcarite  View Urancalcarite Image  Ca(UO2)3(CO3)(OH)6·3(H2O) Approved IMA 1983
NAME ORIGIN: Named for the composition.
Uraninite Say Uraninite  View Uraninite Images Gallery View Uraninite Form   UO2 Valid Species (Pre-IMA) 1772
NAME ORIGIN: From its elemental composition containing uranium.
Uranmicrolite Say Uranmicrolite  View Uranmicrolite Image  (U,Ca)2(Ta,Nb)2O6(OH) Valid Species (Pre-IMA) 1957
NAME ORIGIN: Named for uranium and as a member of the microlite group.
Uranocircite Say Uranocircite  View Uranocircite Images Gallery  Ba(UO2)2(PO4)2·12(H2O) Valid Species (Pre-IMA) 1877
NAME ORIGIN: Named for the composition and from the Greek for "falcon" because it was discovered in Falkenstein, Germany.
Uranophane Say Uranophane  View Uranophane Image   Ca(UO2)2SiO3(OH)2·5(H2O) Valid Species (Pre-IMA) 1853
NAME ORIGIN: From uran and phanos - "to appear."
Uranophane-beta Say Uranophane-beta  View Uranophane-beta Image   Ca[(UO2)SiO3(OH)]2·(H2O) Valid Species (Pre-IMA) 1935
NAME ORIGIN: Named as the polymorph of uranophane.
Uranopilite Say Uranopilite  View Uranopilite Images Gallery   [(UO2)6(SO4)O2(OH)6(H2O)6]·8(H2O) Valid Species (Pre-IMA) 1882
NAME ORIGIN: Named for uranium and the Greek for "felt", alluding to the composition and habit.
Uranopolycrase Say Uranopolycrase  View Uranopolycrase Images Gallery   (U,Y)(Ti,Nb,Ta)2O6 Approved IMA 1993
NAME ORIGIN: Named for its content or URANium and relation to polycrase.
Uranosilite Say Uranosilite   (U++++++O2)Si7O15 Approved IMA 1983
NAME ORIGIN: Named in allusion to the composition.
Uranospathite Say Uranospathite  View Uranospathite Image   Al1-x[ ]x[(UO2)(PO4)]2(H2O)20+3xF1-3x Valid Species (Pre-IMA) 1915
NAME ORIGIN: Named for the composition and the Greek for "broad blade" in allusion to the crystal habit.
Uranosphaerite Say Uranosphaerite  View Uranosphaerite Image   Bi(UO2)O2(OH) Valid Species (Pre-IMA) 1873
NAME ORIGIN: Named for the compostition uranium and the Greek for sphere, in allusion to its globular forms.
Uranospinite Say Uranospinite  View Uranospinite Image  Ca(UO2)2(AsO4)2·10(H2O) Valid Species (Pre-IMA) 1873
NAME ORIGIN: Named for uranium and the Greek for "siskin," in allusion to its composition and color.
Uranotile - See Uranophane
Uranotile-beta - See Uranophane-beta
Uranotungstite Say Uranotungstite   (Fe++,Ba,Pb)(UO2)2WO4(OH)4·12(H2O) Approved IMA 1985
NAME ORIGIN: Named for the composition.
Uranpyrochlore Say Uranpyrochlore  View Uranpyrochlore Image  (U,Ca,Ce)2(Nb,Ta)2O6(OH,F) Approved IMA 1977
NAME ORIGIN: Named for its URANium content and membership in the pyrochlore group.
Urao - See Trona
Urea Say Urea  View Urea Image  CO(NH2)2 Approved IMA 1973
NAME ORIGIN: From the Greek for urine, in which urea was first found.
Ureyite - See Kosmochlor
Uricite Say Uricite  View Uricite Image  C5H4N4O3 Valid Species (Pre-IMA) 1807
NAME ORIGIN: For its composition, anhydrous uric acid.
Ursilite  (Mg,Ca)4[(UO2)4(OH)5/(Si2O5)5.5]·13(H2O) Not Approved IMA - Published 1957
NAME ORIGIN: Named for the composition (U, Si).
Urusite - See Sideronatrite
Urusovite View Urusovite Image View Urusovite Form  Cu[AlAsO5] Approved IMA 1998 (Dana # Added)
NAME ORIGIN: The name honors Vadim Sergeevich Urusov of Moscow State University, Russia.
Urvantsevite Say Urvantsevite  View Urvantsevite Image  Pd(Bi,Pb)2 Approved IMA 1976
NAME ORIGIN: Named for Nikolai N. Urvantsev (1893-1985), Russian geologist who discovered the Norilsk deposits.
Ushkovite Say Ushkovite  View Ushkovite Image  MgFe+++2(PO4)2(OH)2·8(H2O) Approved IMA 1983
NAME ORIGIN: Named for Sergei L’vovich Ushkov (1880-1951), Russian naturalist, student of the Ilmen National Forest, Russia.
Usonite - See Uzonite
Usovite Say Usovite  View Usovite Image  Ba2CaMgAl2F14 Approved IMA 1967
NAME ORIGIN: Named for Mikhail Antonovich Usov (1883-1939), Russian geologist.
Ussingite Say Ussingite  View Ussingite Images Gallery  Na2AlSi3O8(OH) Valid Species (Pre-IMA) 1915
NAME ORIGIN: Named for Niels Viggo Ussing (1864-1911), Copenhagen, Denmark.
Ustarasite Say Ustarasite Pb(Bi,Sb)6S10 Valid Species (Pre-IMA) 1955
NAME ORIGIN: Named for the locality. LOCALITY: Ustarasaisk deposit, western Tian-Shan, Kazakhstan.
Utahite Say Utahite  View Utahite Image Cu5Zn3(Te++++++O4)4(OH)8·7(H2O) Approved IMA 1997 (Dana # Added)
NAME ORIGIN: Named after its locality. LOCALITY: The Centennial Eureka mine, 1 mile southeast of Eureka, Tintic District, Juab County, Utah, USA.
Utahite - See Jarosite
Utahlite - See Variscite
Uvanite Say Uvanite  View Uvanite Image  U++++++2V+++++6O21·15(H2O) Valid Species (Pre-IMA) 1914
NAME ORIGIN: Named for the composition (U, Vanadium)..
Uvarovite Say Uvarovite  View Uvarovite Image View Uvarovite Form  Ca3Cr2(SiO4)3 Valid Species (Pre-IMA) 1832
NAME ORIGIN: Named after Count S. S. Uvarov (1765-1855), Russian statesman and ardent amateur mineral collector.
Uvite - See Uvite
REMARKS: (61.3.1.3)
Uvite Say Uvite  View Uvite Image  (Ca,Na)(Mg,Fe++)3Al5Mg(BO3)3Si6O18(OH,F)4 Valid Species (Pre-IMA) 1929 (Dana # Changed)
NAME ORIGIN: Named after its locality. LOCALITY: Province Uva, Sri Lanka.
Uytenbogaardtite Say Uytenbogaardtite  View Uytenbogaardtite Image  Ag3AuS2 Approved IMA 1978
NAME ORIGIN: Named for Willem Uytenbogaardt (1918- ), Professor of Geology, Technical University, Delft, The Netherlands, prominent ore microscopist.
Uzonite Say Uzonite  View Uzonite Image  As4S5 Approved IMA 1985
NAME ORIGIN: Named for the locality. LOCALITY: Uzon caldera, Kamchatka, Russia.