Difference between revisions of "Template:Chalcedony"
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| Crystal system || Trigonal | | Crystal system || Trigonal | ||
|- | |- | ||
− | | Habit || | + | | Habit || Aggregate |
|- | |- | ||
− | | | + | | Fracture || Conchoidal |
|- | |- | ||
− | | | + | | Hardness || 6.5-7 |
|- | |- | ||
− | + | | Refractive index || 1.535 - 1.539 | |
− | |||
− | |||
− | |||
− | | Refractive index || 1. | ||
|- | |- | ||
− | + | | Specific gravity || 2.60 | |
− | |||
− | |||
− | |||
− | | Specific gravity || 2. | ||
|- | |- | ||
| Lustre || Vitreous | | Lustre || Vitreous | ||
− | |||
− | |||
|} | |} |
Latest revision as of 17:59, 22 December 2006
Chalcedony | |
---|---|
Chemical composition | Silicon dioxide SiO2 |
Crystal system | Trigonal |
Habit | Aggregate |
Fracture | Conchoidal |
Hardness | 6.5-7 |
Refractive index | 1.535 - 1.539 |
Specific gravity | 2.60 |
Lustre | Vitreous |