Pyroxmangite is a relatively rare skarn mineral dimorphic with rhodonite. As a rule, it occurs in the form of fine-grained continuous masses, but sometimes forms tabular or prismatic crystals. Prized by collectors. Transparent crystals are used in jewelry.
You can see pyroxmangite stone for sale and buy it in the Minerals of Russia online store.
General | |
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Category | Inosilicate |
Formula (repeating unit) |
MnSiO3 |
IMA symbol | Pxm |
Strunz classification | 9.DO.05 |
Crystal system | Triclinic |
Crystal class | Pinacoidal (1) (same H-M symbol) |
Space group | C1 |
Unit cell | a = 9.69 Å, b = 10.5 Å, c = 17.39 Å; α = 112.17°, β = 102.85°, γ = 82.93°; V = 1,596.00 Å3; Z = 28 |
Identification | |
Color | pink, red, brown |
Twinning | Lamellar on {010}, simple on {001} |
Cleavage | Perfect on {110}, {110}, (110) ^ (110) = 92° poor on {010}, {001} |
Fracture | hackly, uneven |
Tenacity | brittle |
Mohs scale hardness | 5+1⁄2 – 6 |
Luster | vitreous, pearly |
Streak | colorless |
Diaphaneity | transparent, translucent |
Specific gravity | 3.8 |
Birefringence | δ=0.018 |
Other characteristics | morphology: tabular crystals, granular massive, grainy |