Difference between revisions of "Template:Spessartite"
From The Gemology Project
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| Chemical composition || Mn<sub>3</sub>Al<sub>2</sub>(SiO<sub>4</sub>)<sub>3</sub> | | Chemical composition || Mn<sub>3</sub>Al<sub>2</sub>(SiO<sub>4</sub>)<sub>3</sub> | ||
− | Manganese | + | Manganese aluminum silicate |
|- | |- | ||
| Crystal system || [[Crystals_&_Their_Structure#Cubic_Crystal_System | Cubic]] | | Crystal system || [[Crystals_&_Their_Structure#Cubic_Crystal_System | Cubic]] | ||
|- | |- | ||
− | | Habit || | + | | Habit || Dodecahedra |
|- | |- | ||
− | | Cleavage || | + | | Cleavage || None |
|- | |- | ||
| Hardness || 7 | | Hardness || 7 | ||
|- | |- | ||
− | | Optic nature || | + | | Optic nature || Isotropic |
|- | |- | ||
| Refractive index || 1.795-1.815 | | Refractive index || 1.795-1.815 | ||
|- | |- | ||
− | | Birefringence || | + | | Birefringence || None |
|- | |- | ||
| Specific gravity || 4.12-4.20 | | Specific gravity || 4.12-4.20 | ||
|- | |- | ||
− | | Lustre || | + | | Lustre || Vitreous |
|} | |} |
Latest revision as of 20:42, 23 December 2006
Spessartite Garnet | |
---|---|
Chemical composition | Mn3Al2(SiO4)3
Manganese aluminum silicate |
Crystal system | Cubic |
Habit | Dodecahedra |
Cleavage | None |
Hardness | 7 |
Optic nature | Isotropic |
Refractive index | 1.795-1.815 |
Birefringence | None |
Specific gravity | 4.12-4.20 |
Lustre | Vitreous |