Difference between revisions of "Template:Citrine"
From The Gemology Project
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Line 7: | Line 7: | ||
| Crystal system || Trigonal | | Crystal system || Trigonal | ||
|- | |- | ||
− | | Habit || | + | | Habit || Prismatic |
|- | |- | ||
− | | Cleavage || | + | | Cleavage || Poor |
|- | |- | ||
− | | Fracture || | + | | Fracture || Conchoidal |
|- | |- | ||
| Hardness || 7 | | Hardness || 7 | ||
|- | |- | ||
− | | Optic nature || | + | | Optic nature || Uniaxial + |
|- | |- | ||
| Refractive index || 1.544 - 1.553 | | Refractive index || 1.544 - 1.553 | ||
Line 21: | Line 21: | ||
| Birefringence || 0.009 | | Birefringence || 0.009 | ||
|- | |- | ||
− | | Dispersion || | + | | Dispersion || Low, 0.013 |
|- | |- | ||
| Specific gravity || 2.63 - 2.65 | | Specific gravity || 2.63 - 2.65 | ||
Line 27: | Line 27: | ||
| Lustre || Vitreous | | Lustre || Vitreous | ||
|- | |- | ||
− | | Pleochroism || | + | | Pleochroism || Weak to distinct |
|} | |} |
Latest revision as of 18:21, 22 December 2006
Citrine | |
---|---|
Chemical composition | Silicon dioxide SiO2 |
Crystal system | Trigonal |
Habit | Prismatic |
Cleavage | Poor |
Fracture | Conchoidal |
Hardness | 7 |
Optic nature | Uniaxial + |
Refractive index | 1.544 - 1.553 |
Birefringence | 0.009 |
Dispersion | Low, 0.013 |
Specific gravity | 2.63 - 2.65 |
Lustre | Vitreous |
Pleochroism | Weak to distinct |