Crystal Rhodochrosite

Chemical Formula	MnCO3
Color	Red, Pink, Banded
Hardness	3.5 - 4
Crystal System	Hexagonal
Refractive Index	1.60 - 1.82
SG	3.0 - 3.3
Transparency	Transparent to nearly opaque
Double Refraction	-0.22
Luster	Vitreous
Cleavage	1,3 - rhombohedral
Mineral Class	Rhodochrosite