List of Minerals - O

O

  • Oligoclase
  • Olivine (a group of silicate minerals)
  • Olivenite
  • Omphacite
  • Ordonezite
  • Oregonite
  • Orpiment
  • Orthochrysotile
  • Orthoclase
  • Osarizawaite
  • Osmium
  • Osumilite
  • Otavite
  • Ottrelite
  • Overite





Varieties that are not valid species:
  • Onyx (a monochromatic banded variety of chalcedony)
  • Opal

Read more about this topic:  List Of Minerals