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Anhydrous Carbonates

Aragonite Group

Orthorhombic

Common

  • Aragonite CaCO3
  • Cerussite PbCO3

Uncommon

  • Strontianite SrCO3
  • Witherite BaCO3
  • Rutherfordine UO2CO3
  • Natrite Na2CO3

Calcite Group

Trigonal

Common

  • Calcite CaCO3
  • Rhodochrosite MnCO3
  • Smithsonite ZnCO3
  • Gaspéite (Ni,Mg,Fe2+)CO3
  • Magnesite MgCO3
  • Siderite FeCO3
  • Smithsonite ZnCO3

Uncommon

  • Spherocobaltite CoCO3
  • Otavite CdCO3

Anhydrous Carbonates with Compound Formulas

Dolomite Group

Trigonal

Common

  • Dolomite CaMg(CO3)2

Uncommon

  • Ankerite CaFe(CO3)2
  • Huntite Mg3Ca(CO3)4
  • Minrecordite CaZn(CO3)2
  • Barytocalcite BaCa(CO3)2

Carbonates with Hydroxyl or Halogen

Carbonate with Hydroxide

Monoclinic

Common

  • Azurite Cu3(CO3)2(OH)2
  • Malachite Cu2CO3(OH)2
  • Rosasite (Cu,Zn)2CO3(OH)2
  • Aurichalcite (Zn,Cu)5(CO3)2(OH)6

Uncommon

  • Hydrocerussite P3(CO3)2(OH)2
  • Phosgenite Pb2(CO3)Cl2
  • Hydrozincite Zn5(CO3)2(OH)6

Hydrated Carbonates

Hydrated Carbonates

Common

  • Ikaite CaCO3·6(H2O)

Uncommon

  • Hydromagnesite Mg5(CO3)4(OH)2.4H2O
  • Lansfordite MgCO3·5(H2O)
  • Monohydrocalcite CaCO3·H2O
  • Natron Na2CO3·10(H2O)
  • Zellerite Ca(UO2)(CO3)2·5(H2O)