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Mineral Index - O

• Oxammite
  Orthorhombic
  (NH₄)₂[C₂O₄] · H₂O

• Oxhaverite
  syn. of Apophyllite

• Oxheverite
  syn. of Apophyllite

• Oxiberaunite
  This oxidised "variety" (possibly a valid species) was first described from the Eleonore Mine, Rodheim-Bieber, Wetzlar, Hesse, Germany.
  Monoclinic
  (Fe³⁺,Mn³⁺)Fe³⁺₅[O|(OH)₄|(PO₄)₄] · 6H₂O

• Oxide de manganèse couleur de rose
  syn. of Rhodochrosite

• Oxyallanite
  Potential end-member component of allanite.

• Oxyapatite
  syn. of Apatite-(CaF)

• Oxyberaunite
  syn. of Oxiberaunite

• Oxybiotite
  var. of Biotite

• Oxychlorite
  syn. of Chlorite Group

• Oxychloroïodure de plomb
  syn. of Schwartzembergite

• Oxy-Dravite
  "Oxy-Dravite" is the preliminary working name for a much-studied new member of the tourmaline group which has already appeared several times in the mineralogical literature. This species is related to dravite by substitution of one OH by (ideally) ...
  Trigonal
  Na (MgAl₂)(MgAl₅)Si₆O₁₈(BO₃)₃(OH)₃O

• Oxydulated Copper
  syn. of Cuprite

• Oxydulated Iron
  syn. of Magnetite

• Oxyhornblende
  syn. of Basaltic Hornblende

• Oxykaersutite
  syn. of Kaersutite

• Oxykerchenite
  syn. of Santabarbaraite

• Oxykertschenite
  syn. of Kertschenite

• Oxykinoshitalite
  Monoclinic
  (Ba,K)(Mg,Ti,Fe³⁺,Fe²⁺)₃[(O,OH,F)₂|(Si,Al)₄O₁₀]

• Oxykinoshitalith
  syn. of Oxykinoshitalite

• Oxymagnite
  syn. of Maghemite

• Oxy-morion
  

• Oxy-petscheckite
  
  UFe_2/3(Nb,Ta)₂O₈

• Oxyphlogopite
  K(Mg,Ti,Fe)₃[(Si,Al)₄O₁₀](O,F)₂

• Oxypyromorphite
  
  Pb₁₀(PO₄)₆O

• Oxy-rossmanite
  A preliminary working name for a hypothetical new member of the tourmaline group.
  [ ][LiAl₂]Al₆(BO₃)₃[Si₆O₁₈](OH)₃(O)

• Oxyvanite
  Monoclinic
  V₃O₅

• Oyamalite
  var. of Zircon

• Oyelite
  Orthorhombic
  Ca₁₀Si₈B₂O₂₉·12.5H₂O

• Ozacerite
  syn. of Ozocerite

• Ozarkite
  syn. of Thomsonite-Ca

• Ozeanachat
  syn. of Orbicular Jasper

• Ozmium
  syn. of Osmium

• Ozocerite
  A naturally-occurring odoriferous mineral wax or paraffin. Chemically, ozokerite consists of a mixture of various hydrocarbons. See also hatchettite.

• Ozokerite
  syn. of Ozocerite

• Òr
  syn. of Gold

• Òsmi
  syn. of Osmium

• Òsmiu
  syn. of Osmium