O Listing of Minerals

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O Mineral Index (116 Count)

This alphabetical listing of O 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

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O'danielite - See Odanielite Obertiite   NaNa2(Mg3Fe+++Ti)Si8O22(O,F,OH)2 Approved IMA 1998 (Dana # Added) NAME ORIGIN: Named for Dr. Roberta Oberti (1951-), Pavia, Italy, for her contributions to the understanding of the crystal chemistry of the amphibole group. Oboyerite  Pb6H6(Te++++O3)3(Te++++++O6)2 Approved IMA 1979 NAME ORIGIN: Named for O. (Oliver) Boyer, one of the men who first staked the Grand Central lode claim in the Tombstone district, Arizona, USA. Obradovicite    H4(K,Na)Cu++Fe+++2(AsO4)(MoO4)5 Approved IMA 1986 NAME ORIGIN: Named for Martin T. Obradovic, who provided the type material. Obruchevite - See Yttropyrochlore-(Y) Octahedrite - See Anatase Odanielite   Na(Zn,Mg)3H2(AsO4)3 Approved IMA 1980 NAME ORIGIN: Named for Herbert O Odinite  (Fe+++,Mg,Al,Fe++,Ti,Mn)2.5(Si,Al)2O5(OH)4 Approved IMA 1988 NAME ORIGIN: Named for Gilles Serge Odin, clay mineralogist of the University P. And M. Curie, Paris, France. Odintsovite    K2Na4Ca3Ti2Be4Si12O38 Approved IMA 1995 NAME ORIGIN: For Prof. M. M. Odintsova (1911-1979), a founder of the Institute of the Earth's Crust, Irkutsk. Oellacherite - See Ganterite Oenite  CoSbAs Approved IMA 1998 (Dana # Added) NAME ORIGIN: For Prof. Dr. Ing Soen Oen (1928-1996), Professor of Petrology, Mineralogy and Ore Geology at the University of Amsterdam. Oerebroite - See Orebroite-III Oerebroite - See Orebroite-VIII Offretite     (K2,Ca,Mg)2.5Al5Si13O36 Valid Species (Pre-IMA) 1890 NAME ORIGIN: Named for Albert Jules Joseph Offret (1857-?), professor in the Faculty of Sciences, Lyon, France. Oftedalite   (Sc,Ca)2KBe3Si12O30 Approved IMA 2004 (Dana # Added) NAME ORIGIN: Named for Ivar Oftedal (1894-1976), former Professor of Mineralogy at the Institute of Geology, University of Oslo, Norway. Ogdensburgite   Ca2(Zn,Mn)Fe+++4(AsO4)4(OH)6 Approved IMA 1981 NAME ORIGIN: Named for the locality. LOCALITY: Sterling Hill mine, Ogdensburg, New Jersy, USA. Ohmilite    Sr3(Ti,Fe+++)(Si2O6)2(O,OH) Approved IMA 1973 NAME ORIGIN: Named for the locality. LOCALITY: From Ohmi, Niigata Prefecture, Japan. Ojuelaite    ZnFe+++2(AsO4)2(OH)2 Approved IMA 1981 NAME ORIGIN: Named for the locality. LOCALITY: Ojuela mine, Mapimi, Durango, Mexico. Okanoganite-(Y)     (Na,Ca)3(Y,Ce)12Si6B2O27F14 Approved IMA 1980 NAME ORIGIN: Named for the locality. LOCALITY: Golden Horn Batholith, near Washington Pass, Okanongan County, Washington. Okayamalite    Ca2B2SiO7 Approved IMA 1998 (Dana # Added) NAME ORIGIN: Named after it's locality. LOCALITY: The Fuka mine, Bicchu-cho, Okayama Prefecture, Japan. Okenite    Ca3[Si6O15] Valid Species (Pre-IMA) 1828 NAME ORIGIN: Named for Lorenz Oken (1779-1851), German natural historian, Munich Germany. Okhotskite-(Mg)  Ca3(Mg,Mn++)(Mn+++,Al,Fe+++)(SiO4)(Si2O7)(OH)2 Not Approved IMA 1987 NAME ORIGIN: Named in 1987 by Togari and Akasaka for the Sea of Okhotsk, along which the mine is located. LOCALITY: Okhotskite-(Mn++)  Ca2(Mn++,Mg)(Mn+++,Al,Fe+++)Si3O10(OH)4 Approved IMA 1987 NAME ORIGIN: Named in 1987 by Togari and Akasaka for the Sea of Okhotsk, along which the mine is located. LOCALITY: From the Kokuriki mine, at Hiyoshi, about 20 km north of Kitami City, Hikkaido, Japan. Oldhamite    (Ca,Mg,Fe)S Valid Species (Pre-IMA) 1862 NAME ORIGIN: Named for Thomas Oldham (1816-1878), Director of the Indian Geologial Survey (185o-1876). Olekminskite  Sr(Sr,Ca,Ba)(CO3)2 Approved IMA 1991 NAME ORIGIN: Named for Olekminsk, Russia, administrative center for the district in which the Kedrovyi massif is located. LOCALITY: Kedrovyi massif, five km southeast of the Murun massif, Aldan Shield, Sakha, Russia. Olenite    NaAl3Al6(BO3)3(Si6O18)(O,OH)4 Approved IMA 1986 (Dana # Changed) NAME ORIGIN: Named for the locality. LOCALITY: Decembrist pegmatite field, Olenik River Basin, Russia. Olenite - See Olenite REMARKS: (61.3.1.7) Olgite    Na(Sr,Ba)PO4 Discredited IMA 2008 - Approved IMA 1980 NAME ORIGIN: Named for Olga Anisimovne-Vorobiova (1902-1974), Russian mineralogist. Olgite - See Bario-olgite REMARKS: Ba bearing Olgite I - See Bario-olgite Olgite I - See Olgite Oligoclase     (Na,Ca)(Si,Al)4O8 Valid Species (Pre-IMA) 1826 NAME ORIGIN: From the Greek, oligos and kasein, "little cleavage." Olivenite     Cu2AsO4(OH) Valid Species (Pre-IMA) 1824 NAME ORIGIN: From the German olivernerz, literally "olive" ore, in allusion to its typical color. Olivine    (Mg,Fe)2SiO4 Not Approved IMA NAME ORIGIN: Named after the green color. Olivine - See Forsterite Olkhonskite  (Cr+++,V+++)2Ti3O9 Approved IMA 1994 NAME ORIGIN: Named for the locality. LOCALITY: On the western shore of Lake Baikal, 4.5 km south of the Olkhon Island, Russia. Olmiite   CaMn[SiO3(OH)](OH) Approved IMA 2006 (Dana # Added) NAME ORIGIN: Named for Filippo Olmi, mineralogist at Centre di Studio per la Minerogenesi ela Geochimica Applicata, Florence, Italy Olmsteadite     KFe++2(Nb,Ta)(PO4)2O2 Approved IMA 1976 NAME ORIGIN: Named for Milo Olmstead, micromount mineral collector, Rapid City, South Dakota, USA. Olsacherite    Pb2(SeO4)(SO4) Approved IMA 1969 NAME ORIGIN: Named for Juan A. Olsacher (1903-1964), Argentine mineralogist, University of Cordoba. Olshanskyite    Ca2[B3O3(OH)6]OH Approved IMA 1969 NAME ORIGIN: Named for Yakov I. Olshansky (1912-1958), Russian geochemist. Olympite   LiNa5(PO4)2 Approved IMA 1980 NAME ORIGIN: Named for the 1980 Summer Olympic Games, in Moscow, USSR. Omeiite   (Os,Ru)As2 Approved IMA 1978 NAME ORIGIN: Named for the locality. LOCALITY: Danba, Omeishan Mt, Sichuan (Szechuan), China, Ominelite   (Fe++,Mg)Al3BSiO9 Approved IMA 2002 (Dana # Added) NAME ORIGIN: Named after the locality. LOCALITY: Omine Mountains near the misen River at Tenkawa, Yoshio, Nara Prefecture, Japan. Omongwaite   Na2Ca5(SO4)6 Approved IMA 2005 (Dana # Added) NAME ORIGIN: Named for the locality LOCALITY: Omongwa (salt) pan, near Aminuis, 140 km SSE of Gobabis, southwestern Kalahari, Namibia. Omphacite    (Ca,Na)(Mg,Fe++,Al)Si2O6 Valid Species (Pre-IMA) 1815 NAME ORIGIN: From the Greek for "unripe grapes", in allusion to its green color. Oneillite   Na15Ca3Mn3Fe++3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 Approved IMA 1998 (Dana # Added) NAME ORIGIN: Named after John Johnston O Onofrite(Se) - See Metacinnabar Onoratoite    Sb8O11Cl2 Approved IMA 1968 NAME ORIGIN: Named for Ettore Onorato (1899-1971), Italian mineralogist, University of Rome, Italy. Oosterboschite   (Pd,Cu)7Se3 Approved IMA 1970 NAME ORIGIN: Named for M. R. Oosterbosch, (1908-), Belgian mining engineer. Opal   SiO2 Valid Species (Pre-IMA) Prehistoric NAME ORIGIN: From the Old Indian upala - "precious stone." Orange bornite - See Renierite Orangite - See Thorite Orcelite    Ni5-xAs2 (x=0.23) Approved IMA 1959 NAME ORIGIN: Named for Jean Orcel (1896-1978), French mineralogist. Ordonezite    ZnSb2O6 Valid Species (Pre-IMA) 1955 NAME ORIGIN: Named for Ezequiel Ordonez (1867-1950), Mexican geologist. Orebroite-III  Mn++6(Fe+++,Sb+++++)2Si2(O,OH)14 Approved IMA 1986 NAME ORIGIN: Named for the locality. LOCALITY: Sjogruvan, Grythyttan, Orebro, Sweden. Orebroite-VIII  Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3 Approved IMA 1986 NAME ORIGIN: Named for the locality. LOCALITY: At the Sjo mine, near Grythyttan, Orebro, Sweden. Oregonite   Ni2FeAs2 Approved IMA 1959 NAME ORIGIN: Named for the state of Oregon, USA. Organovaite-Mn   K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 Approved IMA 2002 (Dana # Added) NAME ORIGIN: Named for Natalia Ivanovna Organova (1929-), Russian crystallographer and the Mn end-member. Organovaite-Zn   K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 Approved IMA 2002 (Dana # Added) NAME ORIGIN: Named for Natalia Ivanovna Organova (1929-), Russian crystallographer and the Zn end-member. Orickite   CuFeS2 Approved IMA 1983 NAME ORIGIN: Named for the locality. LOCALITY: Coyote Peak diatreme, 16 miles SW of Orick, Santa Cruz Co., California. Orientite    Ca2Mn++Mn+++2Si3O10(OH)4 Valid Species (Pre-IMA) 1921 NAME ORIGIN: Named after its locality. LOCALITY: Oriente Province, Cuba. Orlandiite   Pb3(Cl,OH)4(SeO3) Approved IMA 1998 (Dana # Added) NAME ORIGIN: Named for mineralogist Paolo Orlandi (1946-) of the University of Pisa, Italy. Orlovite  KLi2TiSi4O11F Proposed IMA 2009 NAME ORIGIN: Commission on New Minerals, Nomenclature and Classification (CNMNC) Orlymanite   Ca4Mn++3Si8O20(OH)6 Approved IMA 1990 NAME ORIGIN: Named for Orlando P. Lyman (1903-1986), founder of Lyman House Memorial Museum, Hilo, Hawaii. Oro - See Gold Orpheite   PbAl3(PO4,SO4)2(OH)6 (?) Approved IMA 1971 NAME ORIGIN: Named for Orpheus, mythical singer in the Rhodopes Mountains. Orpiment     As2S3 Valid Species (Pre-IMA) 1747 NAME ORIGIN: From the Latin, auripigmentum, in allusion to the vivid golden hue. Orschallite   Ca3(SO3)2SO4 Approved IMA 1993 NAME ORIGIN: Named for P. Orschall, Cologne, Germany, who discovered the mineral. Orthite - See Allanite-(Ce) Orthite - See Allanite-(Y) Orthoantigorite - See Lizardite Orthobrannerite   U++++U++++++Ti4O12(OH)2 Approved IMA 1978 NAME ORIGIN: Named as an ORTHOrhombic dimorph of brannerite. Orthobrannerite - See Brannerite Orthochamosite   (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8 Valid Species (Pre-IMA) 1957 (Dana # Added) NAME ORIGIN: Named as the orthorhombic analogue of chamosite. Orthochevkinite  (Ce,La,Ca,Na,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22 Not Approved IMA 1920 NAME ORIGIN: Named as a possible orthorhombic form of chevkinite. Orthochrysotile   Mg3Si2O5(OH)4 Discredited IMA 2006 - Valid Species (Pre-IMA) 1951 NAME ORIGIN: From the orthorhombic crystal symmetry and Greek chrysos - "gold" and tilos - "fiber." Orthochrysotile - See Chrysotile Orthoclase      KAlSi3O8 Valid Species (Pre-IMA) 1823 NAME ORIGIN: From the Greek orthos - "right" and kalo -" I cleave" in allusion to the mineral's right angle of good cleavage. Orthoenstatite - See Enstatite Orthoericssonite    BaMn2(Fe+++O)Si2O7(OH) Approved IMA 1971 NAME ORIGIN: Named for its ORTHOrhombic crystallization and relation to ericssonite. Orthoferrosilite - See Ferrosilite Orthojoaquinite-(Ce)   NaFe++Ba2Ce2Ti2[Si4O12]2 O2(OH) Approved IMA 1982 NAME ORIGIN: Named after its orthorhombic crystal structure and the relationship to joaquinite (named for Joaquin Ridge, Diablo Range, California, USA). Orthojoaquinite-(La)   Ba2Na(La,Ce)2Fe++Ti2Si8O26(OH,O,F) Approved IMA 2000 (Dana # Added) NAME ORIGIN: Named as the La analog of orthojoaquinite. Orthominasragrite   VO(SO4) Approved IMA 2000 (Dana # Added) NAME ORIGIN: Named for the polymorphic relationship to minasragrite. Orthopinakiolite   (Mg,Mn++)2Mn+++BO5 Approved IMA 1960 NAME ORIGIN: Named as an ORTHOrhombic mineral related to pinakiolite. Orthose - See Orthoclase Orthoserpierite   Ca(Cu,Zn)4(SO4)2(OH)6 Approved IMA 1985 NAME ORIGIN: Named for its stuctural rellationship to serpierite. Orthowalpurgite      (UO2)Bi4O4(AsO4)2 Approved IMA 1995 NAME ORIGIN: It is an orthorhombic polymorph of walpurgite. Osakaite Zn4SO4(OH)6 Approved IMA 2006 (Dana # Added) NAME ORIGIN: Named after the locality. LOCALITY: Hirao mine, Minoo (Minoh) City, Osaka Prefecture, Japan Osarizawaite   PbCuAl2(SO4)2(OH)6 Approved IMA 1961 NAME ORIGIN: Named for the locality. LOCALITY: Osarizawa mine, Akita Prefecture, Japan. Osarsite  (Os,Ru)AsS Approved IMA 1972 NAME ORIGIN: Named after it's chemical composition of osmium and arsenic. Osbornite    TiN Valid Species (Pre-IMA) 1870 NAME ORIGIN: For George Osborn, who sent to London the meteorite in which the species was found. Osmiridium - See Iridium Osmium    (Os,Ir) Valid Species (Pre-IMA) 1804 NAME ORIGIN: Named for the principle element in the composition. Osumilite - See Osumilite-(Fe) Pages: [1] [2]