Calcite (twinned)
Calcite (twinned)
Calcite (twinned)
Calcite (twinned)

Calcite (twinned)

Calcite – Ca(CO3)
Elements: Calcium, Carbon, Oxygen
Class: Carbonates
Crystal System: Hexagonal
Hardness: 3
Calcite
Talc (1)Diamond (10)
A copper coin can scratch it.
Origin: Sokolovskoe Iron Mine, Rudny – Kazakhstan History: Ex Britt Collection

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