OR

OR , with photos
OR AMALGAME
ORCELITE , with photos
ORDONEZITE
OREBROITE
OREGONITE
ORICKITE
ORIENTITE
ORLYMANITE
ORPHEITE
ORPIMENT , with photos
ORSCHALLITE
ORTHOBRANNERITE
ORTHOCHAMOSITE
ORTHOCHRYSOTILE
ORTHOCLASE , with photos
ORTHOERICSSONITE
ORTHOJOAQUINITE-(Ce)
ORTHOPINAKIOLITE
ORTHOSERPIERITE