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

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

All minerals by alphabet

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z others