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

You might also like

Translucent yellow calcite crystals from China on a dark matrix.
Calcite
Calcite on Fluorite
Calcite on Fluorite
Purple cyclic twin aragonite crystal from Spain with a clean reflection.
Aragonite
Calcite (“Phantom” Crystals) on Mottramite
Calcite (“Phantom” Crystals) on Mottramite
Emerald on Calcite
Emerald on Calcite
BruciteCalcite