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O Index of Mineral Species
This alphabetical listing of O minerals include synonyms of accepted mineral names, pronunciation of that name, name origins, and locality information. Visit our expanded selection of mineral pictures.
 NaNa2(Mg3Fe+++Ti)Si8O22(O,F,OH)2 NAME ORIGIN: Named for Dr. Roberta Oberti (1951-), Pavia, Italy, for her contributions to the understanding of the crystal chemistry of the amphibole group.  Pb6H6(Te++++O3)3(Te++++++O6)2•2(H2O) 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.   H4(K,Na)Cu++Fe+++2(AsO4)(MoO4)5•12(H2O) NAME ORIGIN: Named for Martin T. Obradovic, who provided the type material. Na(Zn,Mg)3H2(AsO4)3 NAME ORIGIN: Named for Herbert O’Daniel (1903-1977), Professor of Mineralogy, University of Munich, Munich, Germany, and Editor of Neues Jahrbuch fur Mineralogie. (Fe+++,Mg,Al,Fe++,Ti,Mn)2.5(Si,Al)2O5(OH)4 NAME ORIGIN: Named for Gilles Serge Odin, clay mineralogist of the University P. And M. Curie, Paris, France. K2Na4Ca3Ti2Be4Si12O38 NAME ORIGIN: For Prof. M. M. Odintsova (1911-1979), a founder of the Institute of the Earth's Crust, Irkutsk. CoSbAs NAME ORIGIN: For Prof. Dr. Ing Soen Oen (1928-1996), Professor of Petrology, Mineralogy and Ore Geology at the University of Amsterdam. (K2,Ca,Mg)2.5Al5Si13O36•15(H2O) NAME ORIGIN: Named for Albert Jules Joseph Offret (1857-?), professor in the Faculty of Sciences, Lyon, France. (Sc,Ca)2KBe3Si12O30 NAME ORIGIN: Named for Ivar Oftedal (1894-1976), former Professor of Mineralogy at the Institute of Geology, University of Oslo, Norway. Ca2(Zn,Mn)Fe+++4(AsO4)4(OH)6•6(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Sterling Hill mine, Ogdensburg, New Jersy, USA. Sr3(Ti,Fe+++)(Si2O6)2(O,OH)•2-3(H2O) NAME ORIGIN: Named for the locality. LOCALITY: From Ohmi, Niigata Prefecture, Japan. ZnFe+++2(AsO4)2(OH)2•4(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Ojuela mine, Mapimi, Durango, Mexico.  (Na,Ca)3(Y,Ce)12Si6B2O27F14 NAME ORIGIN: Named for the locality. LOCALITY: Golden Horn Batholith, near Washington Pass, Okanongan County, Washington. Ca2B2SiO7 NAME ORIGIN: Named after it's locality. LOCALITY: The Fuka mine, Bicchu-cho, Okayama Prefecture, Japan. Ca3[Si6O15]•6(H2O) NAME ORIGIN: Named for Lorenz Oken (1779-1851), German natural historian, Munich Germany. Ca3(Mg,Mn++)(Mn+++,Al,Fe+++)(SiO4)(Si2O7)(OH)2•(H2O) NAME ORIGIN: Named in 1987 by Togari and Akasaka for the Sea of Okhotsk, along which the mine is located. Ca2(Mn++,Mg)(Mn+++,Al,Fe+++)Si3O10(OH)4 NAME ORIGIN: Named in 1987 by Togari and Akasaka for the Sea of Okhotsk, along which the mine is located. (Ca,Mg,Fe)S NAME ORIGIN: Named for Thomas Oldham (1816-1878), Director of the Indian Geologial Survey (185o-1876). Sr(Sr,Ca,Ba)(CO3)2 NAME ORIGIN: Named for Olekminsk, Russia, administrative center for the district in which the Kedrovyi massif is located. NaAl3Al6(BO3)3(Si6O18)(O,OH)4 NAME ORIGIN: Named for the locality. LOCALITY: Decembrist pegmatite field, Olenik River Basin, Russia. Na(Sr,Ba)PO4 NAME ORIGIN: Named for Olga Anisimovne-Vorobiova (1902-1974), Russian mineralogist.  (Na,Ca)(Si,Al)4O8 NAME ORIGIN: From the Greek, oligos and kasein, "little cleavage." Cu2AsO4(OH) NAME ORIGIN: From the German olivernerz, literally "olive" ore, in allusion to its typical color. (Mg,Fe)2SiO4 NAME ORIGIN: Named after the green color. (Cr+++,V+++)2Ti3O9 NAME ORIGIN: Named for the locality. LOCALITY: On the western shore of Lake Baikal, 4.5 km south of the Olkhon Island, Russia. CaMn[SiO3(OH)](OH) NAME ORIGIN: Named for Filippo Olmi, mineralogist at Centre di Studio per la Minerogenesi ela Geochimica Applicata, Florence, Italy KFe++2(Nb,Ta)(PO4)2O2•2(H2O) NAME ORIGIN: Named for Milo Olmstead, micromount mineral collector, Rapid City, South Dakota, USA. Pb2(SeO4)(SO4) NAME ORIGIN: Named for Juan A. Olsacher (1903-1964), Argentine mineralogist, University of Cordoba. Ca2[B3O3(OH)6]OH•3(H2O) NAME ORIGIN: Named for Yakov I. Olshansky (1912-1958), Russian geochemist. LiNa5(PO4)2 NAME ORIGIN: Named for the 1980 Summer Olympic Games, in Moscow, USSR. (Os,Ru)As2 NAME ORIGIN: Named for the locality. LOCALITY: Danba, Omeishan Mt, Sichuan (Szechuan), China, (Fe++,Mg)Al3BSiO9 NAME ORIGIN: Named after the locality. LOCALITY: Omine Mountains near the misen River at Tenkawa, Yoshio, Nara Prefecture, Japan. Na2Ca5(SO4)6•3H2O NAME ORIGIN: Named for the locality LOCALITY: Omongwa (salt) pan, near Aminuis, 140 km SSE of Gobabis, southwestern Kalahari, Namibia. (Ca,Na)(Mg,Fe++,Al)Si2O6 NAME ORIGIN: From the Greek for "unripe grapes", in allusion to its green color. Na15Ca3Mn3Fe++3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 NAME ORIGIN: Named after John Johnston O’Neill (1886-1966), geologist with the Geological Survey of Canada, Ottawa, and later, Professor of geology, Dean of Science and Dean of Engineering at McGill U Sb8O11Cl2 NAME ORIGIN: Named for Ettore Onorato (1899-1971), Italian mineralogist, University of Rome, Italy. (Pd,Cu)7Se3 NAME ORIGIN: Named for M. R. Oosterbosch, (1908-), Belgian mining engineer. SiO2•n(H2O) NAME ORIGIN: From the Old Indian upala - "precious stone." Ni5-xAs2 (x=0.23) NAME ORIGIN: Named for Jean Orcel (1896-1978), French mineralogist. ZnSb2O6 NAME ORIGIN: Named for Ezequiel Ordonez (1867-1950), Mexican geologist. Mn++6(Fe+++,Sb+++++)2Si2(O,OH)14 NAME ORIGIN: Named for the locality. LOCALITY: Sjogruvan, Grythyttan, Orebro, Sweden. Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3 NAME ORIGIN: Named for the locality. LOCALITY: At the Sjo mine, near Grythyttan, Orebro, Sweden. Ni2FeAs2 NAME ORIGIN: Named for the state of Oregon, USA. K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) NAME ORIGIN: Named for Natalia Ivanovna Organova (1929-), Russian crystallographer and the Mn end-member. K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) NAME ORIGIN: Named for Natalia Ivanovna Organova (1929-), Russian crystallographer and the Zn end-member. CuFeS2•(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Coyote Peak diatreme, 16 miles SW of Orick, Santa Cruz Co., California. Ca2Mn++Mn+++2Si3O10(OH)4 NAME ORIGIN: Named after its locality. LOCALITY: Oriente Province, Cuba. Pb3(Cl,OH)4(SeO3)•(H2O) NAME ORIGIN: Named for mineralogist Paolo Orlandi (1946-) of the University of Pisa, Italy. KLi2TiSi4O11F NAME ORIGIN: Commission on New Minerals, Nomenclature and Classification (CNMNC) Ca4Mn++3Si8O20(OH)6•2(H2O) NAME ORIGIN: Named for Orlando P. Lyman (1903-1986), founder of Lyman House Memorial Museum, Hilo, Hawaii. PbAl3(PO4,SO4)2(OH)6 (?) NAME ORIGIN: Named for Orpheus, mythical singer in the Rhodopes Mountains. As2S3 NAME ORIGIN: From the Latin, auripigmentum, in allusion to the vivid golden hue. Ca3(SO3)2SO4•12(H2O) NAME ORIGIN: Named for P. Orschall, Cologne, Germany, who discovered the mineral.  U++++U++++++Ti4O12(OH)2 NAME ORIGIN: Named as an ORTHOrhombic dimorph of brannerite. (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8 NAME ORIGIN: Named as the orthorhombic analogue of chamosite.  (Ce,La,Ca,Na,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22 NAME ORIGIN: Named as a possible orthorhombic form of chevkinite. Mg3Si2O5(OH)4 NAME ORIGIN: From the orthorhombic crystal symmetry and Greek chrysos - "gold" and tilos - "fiber." KAlSi3O8 NAME ORIGIN: From the Greek orthos - "right" and kalo -" I cleave" in allusion to the mineral's right angle of good cleavage. BaMn2(Fe+++O)Si2O7(OH) NAME ORIGIN: Named for its ORTHOrhombic crystallization and relation to ericssonite. NaFe++Ba2Ce2Ti2[Si4O12]2 O2(OH)•(H2O) NAME ORIGIN: Named after its orthorhombic crystal structure and the relationship to joaquinite (named for Joaquin Ridge, Diablo Range, California, USA). Ba2Na(La,Ce)2Fe++Ti2Si8O26(OH,O,F)•H2O NAME ORIGIN: Named as the La analog of orthojoaquinite. VO(SO4)•5(H2O) NAME ORIGIN: Named for the polymorphic relationship to minasragrite. (Mg,Mn++)2Mn+++BO5 NAME ORIGIN: Named as an ORTHOrhombic mineral related to pinakiolite. Ca(Cu,Zn)4(SO4)2(OH)6•3(H2O) NAME ORIGIN: Named for its stuctural rellationship to serpierite. (UO2)Bi4O4(AsO4)2•2(H2O) NAME ORIGIN: It is an orthorhombic polymorph of walpurgite. Zn4SO4(OH)6•5H2O NAME ORIGIN: Named after the locality. LOCALITY: Hirao mine, Minoo (Minoh) City, Osaka Prefecture, Japan PbCuAl2(SO4)2(OH)6 NAME ORIGIN: Named for the locality. LOCALITY: Osarizawa mine, Akita Prefecture, Japan. (Os,Ru)AsS NAME ORIGIN: Named after it's chemical composition of osmium and arsenic. TiN NAME ORIGIN: For George Osborn, who sent to London the meteorite in which the species was found. (Os,Ir) NAME ORIGIN: Named for the principle element in the composition. (K,Na)(Fe++,Mg)2(Al,Fe+++)3(Si,Al)12O30 NAME ORIGIN: Named for the locality. LOCALITY: Historic province of Osumi in Sakkabira, Kyushu, Japan. (K,Na)(Mg,Fe++)2(Al,Fe+++)3(Si,Al)12O30 NAME ORIGIN: Named for the locality and the composition. LOCALITY: Historic province of Osumi in Sakkabira, Kyushu, Japan. (UO2)2CO3(OH)2•4(H2O) NAME ORIGIN: Named for Maurice Oswald Peeters (1945-), structural crystallographer at the University of Leuven, Belgium. CdCO3 NAME ORIGIN: Named after its locality. LOCALITY: Tsumeb, near Otavi (Namibia). PbGe4O9 NAME ORIGIN: Named for the Herrero tribe name of the locality, Tsumeb. LOCALITY: Tsumeb mine, Namibia. Sn2S3 NAME ORIGIN: Named for J. Ottemann, German mineralogist, Heidelberg, Germany. Na3(Sb2O3)3(SbS3)•3H2O NAME ORIGIN: Named for Berthold Ottens (b 1942), , mineral collector and dealer from Spiegelau, Germany. (Mn,Fe++,Mg)2Al4Si2O10(OH)4 NAME ORIGIN: Named for the locality. LOCALITY: In Belgium, in the Ardennes Mountains, from Ottre, Salmchateau, and Veilsalm. Ni2(CO3)(OH)2•(H2O) NAME ORIGIN: Named after Charles Albert Otway (1922-), miner and prospector of Cosnells, WA, Australia. (Pd,Pt)5(Cu,Fe)4SnTe2S2 NAME ORIGIN: Named after the Oulanka river, which is near the occurrence. Pb4Ag3Bi5S13 NAME ORIGIN: Named for the locality. LOCALITY: Old Lout mine, Ouray, Colorado. USA. (Co,Mg)(H3O)2[(UO2)SiO4]2•3(H2O) NAME ORIGIN: Named from the French "oursin", sea urchin, in allusion to the radiating habit of the acicular crystals. Cu20(Fe,Cu,Zn)6W2Ge6S32 NAME ORIGIN: Named for the locality. LOCALITY: Tsumeb deposit, Ovamboland, Namibia, and (2) the Maikain deposit, Kazakhstan. CaMgAl(PO4)2(OH)•4(H2O) NAME ORIGIN: Named for Edwin J. Over (1903-1963), mineral collector, Colorado Springs, Colorado, USA, who first found the mineral. (Ba,Pb)6(Cu,Fe,Ni)25S27 NAME ORIGIN: For DeAlton R. Owens (1934- ), Canada Centre for Mineral and energy Technology. Pb7Ag2(Sb,Bi)8S20 NAME ORIGIN: Named after its locality. LOCALITY: Poorman Mine, Silver City district, Owyhee County, Idaho, USA. (NH4)2(C2O4)•(H2O) NAME ORIGIN: Named as an OXalate of AMMonia. (Fe+++,Mn+++)Fe+++5(PO4)4O(OH)4•6(H2O) NAME ORIGIN: Named as the higher oxidation state analog of beraunite. (Ba,K)(Mg,Fe++,Ti)3(Si,Al)4O10O2 NAME ORIGIN: Named in accord with the IMA-approved nomenclature for minerals of them mica group (Rieder et al. 1998, Can. Mineral., 36, 905-912). V3O5 NAME ORIGIN: Commission on New Minerals, Nomenclature and Classification (CNMNC) Ca10B2Si8O29•12(H2O) NAME ORIGIN: Named for Jiro Oye (1900-1968), professor of mineralogy, Okayama University, Japan. |
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