Icosahedron truncado

  • Okenite, found in India.

  • Olivenite (Adamite), class phosphates
  • Olivine
  • Onyx-Marble variety of Calcite.
  • Opal, oxide
  • Gold With the
  • Orpiment, sulfide, yellow color. Named of Latin “ aurum ” and “ pigmentum ”. Use out of metallurgy of the mercury.
  • Ordite
  • Ordoñezite
  • Örebroite
  • Orthoclase
  • Orthoserpierite, sulfate. Discovered in 1985 with Chessy-the-Mines, the Rhone (France).
  • Ozarizawaite
  • Otavite
  • Ottrélite
  • Uvarovite

External bonds

  • http://www.mindat.org/index-O.html
  • http://webmineral.com/AtoZ/IndexO.shtml

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