Gedenbergite is a mineral of the pyroxene group from metamorphic limestones.
You can see hedenbergite stone for sale and buy it in the Minerals of Russia online store.
General | |
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Category | Pyroxenes |
Formula (repeating unit) |
CaFeSi2O6 |
IMA symbol | Hd |
Strunz classification | 9.DA.15 |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) (same H-M symbol) |
Space group | C2/c |
Identification | |
Formula mass | 248.09 g/mol |
Color | brownish green, black |
Crystal habit | massive, prismatic crystals |
Cleavage | Good on {110} |
Fracture | Irregular |
Tenacity | Brittle |
Mohs scale hardness | 5.5 - 6.5 |
Luster | Vitreous, dull |
Streak | white, gray |
Diaphaneity | Transparent-Opaque |
Density | 3.56 g/cm3 |
Optical properties | Biaxial (+) |
Refractive index | nα = 1.699 - 1.739 nβ = 1.705 - 1.745 nγ = 1.728 - 1.757 |
Birefringence | δ = 0.029 |
Pleochroism | Weak |
Dispersion | r > v strong |