Rhodochrosite
Credit: Heritage Auctions |
These stunning red rhodochrosite crystals are made of manganese carbonate.
Rhodochrosite | #Geology
Formula: MnCO₃
System: Trigonal
Colour: Pink, rose, red, ...
Lustre: Vitreous, Pearly
Hardness: 3½ - 4
Tenacity: Brittle