Oxide mineral

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The oxide mineral class includes those minerals in which the oxide anion (O²⁻) is bonded to one or more metal alloys. The hydroxide-bearing minerals are typically included in the oxide class. Minerals with complex anion groups such as the silicates, sulfates, carbonates and phosphates are classed separately.

Simple oxides

• XO form
  • Periclase group
    • Periclase MgO
    • Manganosite MnO
  • Zincite group
    • Zincite ZnO
    • Bromellite BeO
    • Tenorite CuO
    • Litharge PbO

• X₂O form
  • Cuprite Cu₂O
  • Ice H₂O

• X₂O₃ form
  • Hematite group
    • Corundum Al₂O₃
    • Hematite Fe₂O₃
    • Ilmenite FeTiO₃

• XO₂ form
  • Rutile group
    • Rutile TiO₂
    • Pyrolusite MnO₂
    • Cassiterite SnO₂
  • Baddeleyite ZrO₂
  • Uraninite UO₂
  • Thorianite ThO₂

• XY₂O₄ form
  • Spinel group
    • Spinel MgAl₂O₄
    • Gahnite ZnAl₂O₄
    • Magnetite Fe₃O₄ (Fe²⁺Fe³⁺₂O₄)
    • Franklinite (Zn,Fe,Mn)(Fe,Mn)₂O₄
    • Chromite FeCr₂O₄
  • Chrysoberyl BeAl₂O₄
  • Columbite (Fe,Mn)(Nb,Ta)₂O₆

• Hydroxide subgroup:
  • Brucite Mg(OH)₂
  • Manganite MnO(OH)
  • Romanèchite BaMn²⁺Mn⁴⁺₈O₁₆(OH)₄
  • Goethite group:
    • Diaspore αAlO(OH)
    • Goethite αFeO(OH)

Nickel–Strunz class 4: oxides

IMA-CNMNC proposes a new hierarchical scheme (Mills et al., 2009). This list uses it to modify the Nickel–Strunz classification (mindat.org, 10 ed, pending publication).^{[original research?]}

• Abbreviations:
  • "*": discredited (IMA/CNMNC status)
  • "?": questionable/doubtful (IMA/CNMNC status)
  • "REE": Rare-earth element (Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu)
  • "PGE": Platinum-group element (Ru, Rh, Pd, Os, Ir, Pt)
  • 03.C Aluminofluorides, 06 Borates, 08 Vanadates (04.H V^[5,6] Vanadates), 09 Silicates:
    • Neso: insular (from Greek: νησος, romanized: nēsos, lit. 'island')
    • Soro: grouping (from Greek: σωροῦ, romanized: sōros; heap, mound (especially of corn))
    • Cyclo: ring
    • Ino: chain (from Greek: ις [genitive: ινος, inos], fibre)
    • Phyllo: sheet (from Greek: φύλλον, romanized: phyllon, lit. 'leaf')
    • Tekto: three-dimensional framework
• Nickel–Strunz code scheme: NN.XY.##x
  • NN: Nickel–Strunz mineral class number
  • X: Nickel–Strunz mineral division letter
  • Y: Nickel–Strunz mineral family letter
  • ##x: Nickel–Strunz mineral/group number, x add-on letter

References