Difference between revisions of "Template:Sardonyx"
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! colspan=2 | Sardonyx | ! colspan=2 | Sardonyx | ||
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− | | Chemical composition || | + | | Chemical composition || SiO<sub>2</sub> Silicon dioxide |
|- | |- | ||
| Crystal system || [[Crystals_&_Their_Structure#Trigonal_Crystal_System | Trigonal]] | | Crystal system || [[Crystals_&_Their_Structure#Trigonal_Crystal_System | Trigonal]] | ||
|- | |- | ||
− | | Habit || edit me | + | | Habit || (edit me) |
|- | |- | ||
− | | Cleavage || | + | | Cleavage || Poor |
|- | |- | ||
− | | Fracture || | + | | Fracture || Very brittle, conchoidal |
|- | |- | ||
| Hardness || 7 | | Hardness || 7 | ||
|- | |- | ||
− | | Optic nature || edit me | + | | Optic nature || (edit me) |
|- | |- | ||
| Refractive index || 1.544 - 1.553 | | Refractive index || 1.544 - 1.553 |
Latest revision as of 20:20, 23 December 2006
Sardonyx | |
---|---|
Chemical composition | SiO2 Silicon dioxide |
Crystal system | Trigonal |
Habit | (edit me) |
Cleavage | Poor |
Fracture | Very brittle, conchoidal |
Hardness | 7 |
Optic nature | (edit me) |
Refractive index | 1.544 - 1.553 |
Birefringence | 0.009 |
Dispersion | 0.013 |
Specific gravity | 2.65 |
Lustre | Vitreous |
Pleochroism | None |