O

Obertiite (A)	Omeiite (N)	Orthopinakiolite (G)
Oboyerite (A)	Ominelite (A)	Orthoserpierite (A)
Obradovicite (A)	Omphacite (A)	Orthowalpurgite (A)
O'Danielite (A)	Oneillite (A)	Osarizawaite (G)
Odinite-1M (A)	Onoratoite (A)	Osarsite (A)
Odinite-1T (P)	Oosterboschite (A)	Osbornite (G)
Odintsovite (A)	Opal (G)	Osmium (R)
Oenite (A)	Orcelite (G)	Osumilite (G)
Offrétite (A)	Ordoñezite (G)	Osumilite-(Mg) (G)
Ogdensburgite (A)	Örebroite (A)	Oswaldpeetersite (A)
Ohmilite (A)	Oregonite (G)	Otavite (G)
Ojuelaite (A)	Organovaite-Mn (A)	Otjisumeite (A)
Okanoganite-(Y) (A)	Organovaite-Zn (A)	Ottemannite (G)
Okayamalite (A)	Orickite (A)	Ottensite (A)
Okenite (G)	Orientite (G)	Ottrélite (G)
Okhotskite (A)	Orlandiite (A)	Otwayite (A)
Oldhamite (G)	Orlymanite (A)	Oulankaite (A)
Olekminskite (A)	Orpheite (A)	Ourayite (A)
Olenite (A)	Orpiment (G)	Ourayite-P (N)
Olgite (A)	Orschallite (A)	Oursinite (A)
Oligoclase (G)	Orthobrannerite (G)	Overite (G)
Olivenite (G)	Orthochamosite (G)	Owensite (A)
Olivine series	Orthochrysotile (G)	Owyheeite (G)
Olkhonskite (A)	Orthoclase (G)	Oxammite (G)
Olmsteadite (A)	Orthoericssonite (A)	Oxy-apatite (Q)
Olsacherite (A)	Orthojoaquinite-(Ce) (A)	Oxybiotite (N)
Olshanskyite (A)	Orthojoaquinite-(La) (R)	Oxykaersutite (N)
Olympite (A)	Orthominasragite (A)	Oyelite (A)