Difference between revisions of "Template:Thulite"
From The Gemology Project
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! colspan=2 | Thulite | ! colspan=2 | Thulite | ||
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− | | Chemical composition || Calcium | + | | Chemical composition || Calcium aluminum silicate |
|- | |- | ||
− | | Crystal system || | + | | Crystal system || Orthorhombic |
|- | |- | ||
− | | Habit || | + | | Habit || Massive |
|- | |- | ||
| Hardness || 6.5 | | Hardness || 6.5 | ||
|- | |- | ||
− | | Optic nature || | + | | Optic nature || Biaxial + |
|- | |- | ||
| Refractive index || 1.685-1.707 | | Refractive index || 1.685-1.707 | ||
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| Birefringence || 0.008 | | Birefringence || 0.008 | ||
|- | |- | ||
− | | Dispersion || | + | | Dispersion || Low, 0.012 |
|- | |- | ||
| Specific gravity || 3.35 | | Specific gravity || 3.35 | ||
|- | |- | ||
− | | Lustre || | + | | Lustre || Vitreous |
|} | |} |
Latest revision as of 21:06, 23 December 2006
Thulite | |
---|---|
Chemical composition | Calcium aluminum silicate |
Crystal system | Orthorhombic |
Habit | Massive |
Hardness | 6.5 |
Optic nature | Biaxial + |
Refractive index | 1.685-1.707 |
Birefringence | 0.008 |
Dispersion | Low, 0.012 |
Specific gravity | 3.35 |
Lustre | Vitreous |