Difference between revisions of "Template:Calcite"
From The Gemology Project
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Nick Lombard (talk | contribs) |
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|- | |- | ||
| Specific gravity || 2.69 - 2.71 | | Specific gravity || 2.69 - 2.71 | ||
| + | |- | ||
| + | | Optic nature || Uniaxial - | ||
|- | |- | ||
| Refractive Index || 1.486 - 1.658 | | Refractive Index || 1.486 - 1.658 | ||
|- | |- | ||
| − | | Birefringence || 0.172 - 0.19 | + | | Birefringence || 0.172 - 0.19 |
|- | |- | ||
| Lustre || Vitreous | | Lustre || Vitreous | ||
|} | |} | ||
Latest revision as of 01:13, 22 December 2007
| Calcite | |
|---|---|
| Chemical composition | CaCO3 |
| Crystal system | Hexagonal(Trigonal) |
| Habit | Massive |
| Hardness | 3 |
| Specific gravity | 2.69 - 2.71 |
| Optic nature | Uniaxial - |
| Refractive Index | 1.486 - 1.658 |
| Birefringence | 0.172 - 0.19 |
| Lustre | Vitreous |
