All minerals, synonyms and varieties beginning with letter = O, ö, Ö.

O-dominant amphiboles	Onoratoite	Oswaldpeetersite
O'Danielite	Onyx	Otavite
Oberthürite	Oosterboschite	Otjisumeite
Obertiite (Ob) amphiboles	Opacite	Ottemannite
Oberwolfachite	Opal	Ottensite
Oboyerite	Opal-AN	Ottohahnite
Obradovicite group	Ophirite	Ottoite
Obradovicite-KCu	Oppenheimerite	Ottoliniite
Obradovicite-NaCu	Orangite	Ottrélite
Obradovicite-NaNa	Orcelite	Otwayite
Odigitriaite	Ordoñezite	Oulankaite
Odikhinchaite	Oregonite	Ourayite
Odinite	Oreillyite	Oursinite
Odinite-1T	Organovaite group	Ovamboite
Odintsovite	Organovaite-Mn	Overite
Oenite	Organovaite-Zn	Owensite
Örebroite	Orickite	Owyheeite
OFF zeolite structure group	Orientite	Oxammite
Offretite	Orishchinite	Oxiberaunite
Oftedalite	Orlandiite	Oxide garnets (Z charge 6)
Ogdensburgite	Orlets	Oxide garnets; Bitikleite group (Z charge 9)
Ognitite	Orlovite	Oxo-magnesio-ferri-hornblende
Ohmilite	Orlymanite	Oxo-magnesio-hastingsite
Ojuelaite	Ornithite	Oxo-mangani-leakeite
Okanoganite-(Y)	Orpheite	Oxy-chromium-dravite
Okayamalite	Orpiment	Oxy-dravite
Okenite	Orschallite	Oxy-foitite
Okhotskite	Orthoamphibole	Oxy-schorl
Okieite	Orthobrannerite	Oxy-vanadium-dravite
Okruginite	Orthobrochantite	Oxybiotite
Okruschite	Orthochamosite	Oxybismutomicrolite
Oldhamite	Orthochrysotile	Oxycalciobetafite
Oldsite	Orthoclase	Oxycalciomicrolite
Olekminskite	Orthocuproplatinum	Oxycalciopyrochlore
Olenite	Orthoericssonite	Oxycalcioroméite
Olgite	Orthogersdorffite	Oxykenomicrolite
Oligoclase	Orthojoaquinite-(Ce)	Oxykinoshitalite
Oligonite	Orthojoaquinite-(La)	Oxynatromicrolite
Olivenite	Orthominasragrite	Oxynatropyrochlore
Olivine group	Orthopinakiolite	Oxyphlogopite
Olkhonskite	Orthopinakiolite group	Oxyplumbobetafite
Olmiite	Orthopyroxene group	Oxyplumbopyrochlore
Olmsteadite	Orthoserpierite	Oxyplumboroméite
Olsacherite	Orthowalpurgite	Oxyspinel group
Olsenite	Osakaite	Oxystannomicrolite
Olshanskyite	Osarizawaite	Oxystibiomicrolite
Olympite	Osarsite	Oxyuranobetafite
Omariniite	Osbornite	Oxyvanite
Omeiite	Oscarkempffite	Oxyyttrobetafite-(Y)
Ominelite	Oskarssonit subgroup	Oxyyttropyrochlore-(Y)
Omongwaite	Oskarssonite	Oyelite
Omphacite	Osmiridium	Oyonite
Omsite	Osmium	Ozernovskite
Oncophyllite	Osumilite	Ozerovaite
Ondrušite	Osumilite Group	Ozocerite
Oneillite	Osumilite-(Mg)

All minerals by alphabet

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