cubic Nesosilicates
Tsavorite
Formula Ca3Al2(SiO4)3:V,Cr
Crystal Structure
#! Species: Tsavorite (Grossular Garnet)
#! System: Cubic (m3m)
#! Habit: Dodecahedron-trapezohedron combination
cubic[m3m]:{110}@1.0 + {211}@0.6
cubic
m3m
{110} {211}
Quick Facts
Hardness
7.0
Specific Gravity
3.61
Refractive Index
1.74
Optical Character
Isotropic
Physical Properties
- Crystal System
- cubic
- Hardness (Mohs)
- 7.0
- Specific Gravity
- 3.61
- Cleavage
- None
- Fracture
- Conchoidal to uneven
- Lustre
- Vitreous
Optical Properties
- Refractive Index
- 1.74
- Optical Character
- Isotropic
- Dispersion
- 0.028
- Pleochroism
- None (isotropic)
Characteristics
Colours
Vivid greenYellowish-greenBluish-greenMedium greenDeep green
Localities
Kenya (Tsavo)Tanzania (Merelani)MadagascarPakistan
Common Inclusions
Graphite flakesActinolite needlesFingerprintsGrowth tubesDiopside crystals
Known Treatments
Generally not treated
Crystal Forms
dodecahedrontrapezohedron
Related Minerals
Other minerals in the cubic system
