Template:Rhodochrosite
From The Gemology Project
Revision as of 01:13, 22 December 2007 by Nick Lombard (talk | contribs)
Rhodocrosite | |
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Chemical composition | MnCO3 + Fe, Ca |
Crystal system | Hexagonal |
Habit | Rhombohedral |
Colors | pink, red, yellowish, gray, brown |
Hardness | 3.5 - 4 |
Specific gravity | 3.40 - 3.70 |
Optic nature | Uniaxial - |
Refractive Index | 1.60 - 1.83 |
Birefringence | 0.208 - 0.220 |
Lustre | Vitreous to pearly |