O Listing of Minerals

O Listing of Minerals

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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.


O'danielite *  (see Odanielite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Obertiite !   Mindat locations   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.
Oboyerite  Say OBOYERITE Mindat locations   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.
Obradovicite  Say OBRADOVICITE Mineral Image for Obradovicite Mindat locations   H4(K,Na)Cu++Fe+++2(AsO4)(MoO4)5 • 12(H2O) NAME ORIGIN: Named for Martin T. Obradovic, who provided the type material.
Obruchevite *  (see Yttropyrochlore-(Y) ) See Also: GOOGLE, Athena, MinDAT, MinMax
Octahedrite *  (see Anatase ) See Also: GOOGLE, Athena, MinDAT, MinMax
Odanielite  Say ODANIELITE Mindat locations   Na(Zn,Mg)3H2(AsO4)3
Odinite  Say ODINITE Mindat locations   (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.
Odintsovite  Say ODINTSOVITE Mindat locations   K2Na4Ca3Ti2Be4Si12O38 NAME ORIGIN: For Prof. M. M. Odintsova (1911-1979), a founder of the Institute of the Earth's Crust, Irkutsk.
Oellacherite *  (see Ganterite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oenite !  Say OENITE Mindat locations   CoSbAs 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 ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oerebroite *  (see Orebroite-VIII ) See Also: GOOGLE, Athena, MinDAT, MinMax
Offretite  Say OFFRETITE Mineral Image for Offretite Mindat locations   (K2,Ca,Mg)2.5Al5Si13O36 • 15(H2O) NAME ORIGIN: Named for Albert Jules Joseph Offret (1857-?), professor in the Faculty of Sciences, Lyon, France.
Ogdensburgite  Say OGDENSBURGITE Mineral Image for Ogdensburgite Mindat locations   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.
Ohmilite  Say OHMILITE Mineral Image for Ohmilite Mindat locations   Sr3(Ti,Fe+++)(Si2O6)2(O,OH) • 2-3(H2O)
Ojuelaite  Say OJUELAITE Mineral Image for Ojuelaite Mindat locations   ZnFe+++2(AsO4)2(OH)2 • 4(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Ojuela mine, Mapimi, Durango, Mexico.
Okanoganite-(Y)  Say OKANOGANITE-(Y) Mineral Image for Okanoganite-(Y) Mindat locations   (Na,Ca)3(Y,Ce)12Si6B2O27F14 NAME ORIGIN: Named for the locality. LOCALITY: Golden Horn Batholith, near Washington Pass, Okanongan County, Washington.
Okayamalite !  Say OKAYAMALITE Mindat locations   Ca2B2SiO7 NAME ORIGIN: Named after it's locality. LOCALITY: The Fuka mine, Bicchu-cho, Okayama Prefecture, Japan.
Okenite  Say OKENITE Mineral Image for Okenite Mindat locations   Ca3[Si6O15] • 6(H2O) NAME ORIGIN: Named for Lorenz Oken (1779-1851), German natural historian, Munich Germany.
Okhotskite-(Mg) *  Say OKHOTSKITE-(MG) Mindat locations   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.
Okhotskite-(Mn++)  Say OKHOTSKITE-(MN++) Mindat locations   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.
Oldhamite  Say OLDHAMITE Mineral Image for Oldhamite Mindat locations   (Ca,Mg,Fe)S NAME ORIGIN: Named for Thomas Oldham (1816-1878), Director of the Indian Geologial Survey (185o-1876).
Olekminskite  Say OLEKMINSKITE Mindat locations   Sr(Sr,Ca,Ba)(CO3)2
Olenite !  Say OLENITE Mineral Image for Olenite Mindat locations   NaAl3Al6(BO3)3(Si6O18)(O,OH)4 NAME ORIGIN: Named for the locality. LOCALITY: Decembrist pegmatite field, Olenik River Basin, Russia.
Olenite - (61.3.1.7) *  (see Olenite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Olgite  Say OLGITE Mindat locations   Na(Sr,Ba)PO4 NAME ORIGIN: Named for Olga Anisimovne-Vorobiova (1902-1974), Russian mineralogist.
Olgite-Ba *  (see Bario-olgite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oligoclase  Say OLIGOCLASE Mineral Image for Oligoclase Java Crystal form for Oligoclase Mindat locations   (Na,Ca)(Si,Al)4O8 NAME ORIGIN: From the Greek, oligos and kasein, "little cleavage."
Olivenite  Say OLIVENITE Mineral Image for Olivenite Java Crystal form for Olivenite Mindat locations   Cu2AsO4(OH) NAME ORIGIN: From the German olivernerz, literally "olive" ore, in allusion to its typical color.
Olivine *  Say OLIVINE Mineral Image for Olivine Mindat locations   (Mg,Fe)2SiO4 NAME ORIGIN: Named after the green color.
Olivine *  (see Forsterite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Olkhonskite  Say OLKHONSKITE Mindat locations   (Cr+++,V+++)2Ti3O9 NAME ORIGIN: For the locality. LOCALITY: On the western shore of Lake Baikal, 4.5 km south of the Olkhon Island, Russia.
Olmsteadite  Say OLMSTEADITE Mineral Image for Olmsteadite Mindat locations   KFe++2(Nb,Ta)(PO4)2O2 • 2(H2O) NAME ORIGIN: Named for Milo Olmstead, micromount mineral collector, Rapid City, South Dakota, USA.
Olsacherite  Say OLSACHERITE Mineral Image for Olsacherite Java Crystal form for Olsacherite Mindat locations   Pb2(SeO4)(SO4) NAME ORIGIN: Named for Juan A. Olsacher (1903-1964), Argentine mineralogist, University of Cordoba.
Olshanskyite  Say OLSHANSKYITE Mineral Image for Olshanskyite Mindat locations   Ca2[B3O3(OH)6]OH • 3(H2O) NAME ORIGIN: Named for Yakov I. Olshansky (1912-1958), Russian geochemist.
Olympite  Say OLYMPITE Mindat locations   LiNa5(PO4)2
Omeiite  Say OMEIITE Mindat locations   (Os,Ru)As2 NAME ORIGIN: Named for the locality. LOCALITY: Danba, Omeishan Mt, Sichuan (Szechuan), China,
Ominelite !   Mineral Image for Ominelite Mindat locations   (Fe++,Mg)Al3BSiO9 NAME ORIGIN: Named after the locality. LOCALITY: Omine Mountains near the misen River at Tenkawa, Yoshio, Nara Prefecture, Japan.
Omphacite  Say OMPHACITE Mineral Image for Omphacite Mindat locations   (Ca,Na)(Mg,Fe++,Al)Si2O6 NAME ORIGIN: From the Greek for "unripe grapes", in allusion to its green color.
Oneillite !   Mindat locations   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
Onofrite(Se) *  (see Metacinnabar ) See Also: GOOGLE, Athena, MinDAT, MinMax
Onoratoite  Say ONORATOITE Mineral Image for Onoratoite Mindat locations   Sb8O11Cl2 NAME ORIGIN: Named for Ettore Onorato (1899-1971), Italian mineralogist, University of Rome, Italy.
Oosterboschite  Say OOSTERBOSCHITE Mindat locations   (Pd,Cu)7Se3 NAME ORIGIN: Named for M. R. Oosterbosch, (1908-), Belgian mining engineer.
Opal  Say OPAL Mineral Image for Opal Mindat locations   SiO2 • n(H2O) NAME ORIGIN: From the Old Indian upala - "precious stone."
Orange bornite *  (see Renierite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orangite *  (see Thorite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orcelite  Say ORCELITE Mineral Image for Orcelite Mindat locations   Ni5-xAs2 (x=0.23) NAME ORIGIN: Named for Jean Orcel (1896-1978), French mineralogist.
Ordonezite  Say ORDONEZITE Mineral Image for Ordonezite Mindat locations   ZnSb2O6 NAME ORIGIN: Named for Ezequiel Ordonez (1867-1950), Mexican geologist.
Orebroite-III  Say OREBROITE-III Mindat locations   Mn++6(Fe+++,Sb+++++)2Si2(O,OH)14 NAME ORIGIN: Named for the locality. LOCALITY: Sjogruvan, Grythyttan, Orebro, Sweden.
Orebroite-VIII  Say OREBROITE-VIII Mindat locations   Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3 NAME ORIGIN: Named for the locality. LOCALITY: At the Sjo mine, near Grythyttan, Orebro, Sweden.
Oregonite  Say OREGONITE Mineral Image for Oregonite Mindat locations   Ni2FeAs2 NAME ORIGIN: Named for the state of Oregon, USA.
Organovaite-Mn !   Mindat locations   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.
Organovaite-Zn !   Mindat locations   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.
Orickite  Say ORICKITE Mindat locations   CuFeS2 • (H2O) NAME ORIGIN: Named for the locality. LOCALITY: Coyote Peak diatreme, 16 miles SW of Orick, Santa Cruz Co., California.
Orientite  Say ORIENTITE Mineral Image for Orientite Mindat locations   Ca2Mn++Mn+++2Si3O10(OH)4 NAME ORIGIN: Named after its locality. LOCALITY: Oriente Province, Cuba.
Orlandiite !   Mineral Image for Orlandiite Mindat locations   Pb3(Cl,OH)4(SeO3) • (H2O) NAME ORIGIN: Named for mineralogist Paolo Orlandi (1946-) of the University of Pisa, Italy.
Orlymanite  Say ORLYMANITE Mineral Image for Orlymanite Mindat locations   Ca4Mn++3Si8O20(OH)6 • 2(H2O) NAME ORIGIN: Named for Orlando P. Lyman (1903-1986), founder of Lyman House Memorial Museum, Hilo, Hawaii.
Oro *  (see Gold ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orpheite  Say ORPHEITE Mineral Image for Orpheite Mindat locations   PbAl3(PO4,SO4)2(OH)6 (?)
Orpiment  Say ORPIMENT Mineral Image for Orpiment Java Crystal form for Orpiment Mindat locations   As2S3 NAME ORIGIN: From the Latin, auripigmentum, in allusion to the vivid golden hue.
Orschallite  Say ORSCHALLITE Mindat locations   Ca3(SO3)2SO4 • 12(H2O)
Orthite *  (see Allanite-(Ce) ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthite *  (see Allanite-(La) ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthite *  (see Allanite-(Y) ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthoantigorite *  (see Lizardite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthobrannerite  Say ORTHOBRANNERITE Mindat locations   U++++U++++++Ti4O12(OH)2
Orthobrannerite *  (see Brannerite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthochamosite  Say ORTHOCHAMOSITE Mineral Image for Orthochamosite Mindat locations   (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8 NAME ORIGIN: Named as the orthorhombic analogue of chamosite.
Orthochevkinite *   Mindat locations   (Ce,La,Ca,Na,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22 NAME ORIGIN: Named as a possible orthorhombic form of chevkinite.
Orthochrysotile  Say ORTHOCHRYSOTILE Mineral Image for Orthochrysotile Mindat locations   Mg3Si2O5(OH)4 NAME ORIGIN: From the orthorhombic crystal symmetry and Greek chrysos - "gold" and tilos - "fiber."
Orthoclase  Say ORTHOCLASE Mineral Image for Orthoclase Java Crystal form for Orthoclase Mindat locations   KAlSi3O8 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 ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthoericssonite  Say ORTHOERICSSONITE Mineral Image for Orthoericssonite Mindat locations   BaMn2(Fe+++O)Si2O7(OH)
Orthoferrosilite *  (see Ferrosilite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthojoaquinite-(Ce)  Say ORTHOJOAQUINITE-(CE) Mindat locations   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).
Orthojoaquinite-(La) !  Say ORTHOJOAQUINITE-(LA) Mindat locations   Ba2Na(La,Ce)2Fe++Ti2Si8O26(OH,O,F) • H2O NAME ORIGIN: Named as the La analog of orthojoaquinite.
Orthominasragrite !   Mineral Image for Orthominasragrite Mindat locations   VO(SO4) • 5(H2O) NAME ORIGIN: Named for the polymorphic relationship to minasragrite.
Orthopinakiolite  Say ORTHOPINAKIOLITE Mineral Image for Orthopinakiolite Mindat locations   (Mg,Mn++)2Mn+++BO5
Orthose *  (see Orthoclase ) See Also: GOOGLE, Athena, MinDAT, MinMax
Orthoserpierite  Say ORTHOSERPIERITE Mineral Image for Orthoserpierite Mindat locations   Ca(Cu,Zn)4(SO4)2(OH)6 • 3(H2O) NAME ORIGIN: Named for its stuctural rellationship to serpierite.
Orthowalpurgite  Say ORTHOWALPURGITE Java Crystal form for Orthowalpurgite Mindat locations   (UO2)Bi4O4(AsO4)2 • 2(H2O) NAME ORIGIN: It is an orthorhombic polymorph of walpurgite.
Osarizawaite  Say OSARIZAWAITE Mineral Image for Osarizawaite Mindat locations   PbCuAl2(SO4)2(OH)6 NAME ORIGIN: Named for the locality. LOCALITY: Osarizawa mine, Akita Prefecture, Japan.
Osarsite  Say OSARSITE Mindat locations   (Os,Ru)AsS NAME ORIGIN: Named after it's chemical composition of osmium and arsenic.
Osbornite  Say OSBORNITE Mindat locations   TiN NAME ORIGIN: For George Osborn, who sent to London the meteorite in which the species was found.
Osmiridium *  (see Iridium ) See Also: GOOGLE, Athena, MinDAT, MinMax
Osmium  Say OSMIUM Mindat locations   (Os,Ir) NAME ORIGIN: Named for the principle element in the composition.
Osumilite *  (see Osumilite-(Fe) ) See Also: GOOGLE, Athena, MinDAT, MinMax
Osumilite-(Fe)  Say OSUMILITE-(FE) Mineral Image for Osumilite-(Fe) Mindat locations   (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.
Osumilite-(Mg)  Say OSUMILITE-(MG) Mindat locations   (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.
Oswaldpeetersite !   Mineral Image for Oswaldpeetersite Mindat locations   (UO2)2CO3(OH)2 • 4(H2O) NAME ORIGIN: Named for Maurice Oswald Peeters (1945-), structural crystallographer at the University of Leuven, Belgium.
Otavite  Say OTAVITE Mineral Image for Otavite Mindat locations   CdCO3 NAME ORIGIN: Named after its locality. LOCALITY: Tsumeb, near Otavi (Namibia).
Otjisumeite  Say OTJISUMEITE Mindat locations   PbGe4O9 NAME ORIGIN: Named for the Herrero tribe name of the locality, Tsumeb. LOCALITY: Tsumeb mine, Namibia.
Ottemannite  Say OTTEMANNITE Mindat locations   Sn2S3 NAME ORIGIN: Named for J. Ottemann, German mineralogist, Heidelberg, Germany.
Ottrelite  Say OTTRELITE Mineral Image for Ottrelite Mindat locations   (Mn,Fe++,Mg)2Al4Si2O10(OH)4 NAME ORIGIN: Named for the locality. LOCALITY: In Belgium, in the Ardennes Mountains, from Ottre, Salmchateau, and Veilsalm.
Otwayite  Say OTWAYITE Mineral Image for Otwayite Mindat locations   Ni2(CO3)(OH)2 • (H2O) NAME ORIGIN: Named after Charles Albert Otway (1922-), miner and prospector of Cosnells, WA, Australia.
Oulankaite !  Say OULANKAITE Mineral Image for Oulankaite Mindat locations   (Pd,Pt)5(Cu,Fe)4SnTe2S2 NAME ORIGIN: Named after the Oulanka river, which is near the occurrence.
Oulongaite *  (see Oulankaite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Ourayite  Say OURAYITE Mindat locations   Pb4Ag3Bi5S13 NAME ORIGIN: Named for the locality. LOCALITY: Old Lout mine, Ouray, Colorado. USA.
Oursinite  Say OURSINITE Mindat locations   (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.
Ovamboite !   Mindat locations   Cu20(Fe,Cu,Zn)6W2Ge6S32 NAME ORIGIN: Named for the locality. LOCALITY: Tsumeb deposit, Ovamboland, Namibia, and (2) the Maikain deposit, Kazakhstan.
Overite  Say OVERITE Java Crystal form for Overite Mindat locations   CaMgAl(PO4)2(OH) • 4(H2O)
Owensite  Say OWENSITE Mindat locations   (Ba,Pb)6(Cu,Fe,Ni)25S27 NAME ORIGIN: For DeAlton R. Owens (1934- ), Canada Centre for Mineral and energy Technology.
Owyheeite  Say OWYHEEITE Mineral Image for Owyheeite Mindat locations   Pb7Ag2(Sb,Bi)8S20 NAME ORIGIN: Named after its locality. LOCALITY: Poorman Mine, Silver City district, Owyhee County, Idaho, USA.
Oxammite  Say OXAMMITE Mineral Image for Oxammite Mindat locations   (NH4)2(C2O4) • (H2O)
Oxiberaunite *   Mindat locations   (Fe+++,Mn+++)Fe+++5(PO4)4O(OH)4 • 6(H2O)
Oxyberaunite *  (see Beraunite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oxyhornblende *  (see Ferrohornblende ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oxyhornblende *  (see Ferrokaersutite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oxyjulgoldite *  (see Julgoldite-(Fe+++) ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oxykertschenite *  (see Metavivianite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oxypetscheckite *  (see Petscheckite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Oyelite  Say OYELITE Mineral Image for Oyelite Mindat locations   Ca10B2Si8O29 • 12(H2O) NAME ORIGIN: Named for Jiro Oye (1900-1968), professor of mineralogy, Okayama University, Japan.

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LEGEND

Sound files Minerals identified with this icon have a sound file, courtesy of The Photo-Atlas of Minerals, which gives the pronunciation of the mineral name.
Image files Minerals identified with this icon have an image or picture in the database which may be viewed.
Java Crystal Forms Minerals identified with this icon have a Java crystal form, created with the program JCrystal, which can be manipulated and rotated.
Mindat Locations This icon links the mineral to the locality-rich information contained in Mindat.org.
Minerals identified with this icon are radioactive.
- Detectable with very sensitive instruments,
- very mild,
- weak,
- strong,
- very strong,
- dangerous.
* Mineral Name is Not IMA Approved.
! New Dana Classification Number Has Been Changed or Added.
? IMA Discredited Mineral Species Name.


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