Difference between revisions of "Template:Rhodochrosite"

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Revision as of 04:21, 23 December 2007

Rhodocrosite
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