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Smithsonite is a mineral. It contains zinc carbonate, ZnCO3. It is an ore of zinc. It has a Mohs hardness (a hardness scale) of 4.5. It has a specific gravity of 4.5. Some zinc can be replaced with manganese to make manganese carbonate.[1][2]

References[change | change source]

  1. "Smithsonite: Mineral information, data and localities". Retrieved 2019-08-08.
  2. "Smithsonite Mineral Data". Retrieved 2019-08-08.