Difference between revisions of "Template:Hiddenite"
From The Gemology Project
Africanuck (talk | contribs) |
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| Optic nature || | | Optic nature || | ||
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− | | | + | | Refractive index || 1.66 |
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| Birefringence || weak | | Birefringence || weak |
Revision as of 11:44, 1 November 2006
Hiddenite | |
---|---|
Chemical composition | Lithium Aluminium Silicate LiAlSi2O6 |
Crystal system | Monoclinic |
Habit | prismatic |
Cleavage | perfect in two directions |
Fracture | splintery |
Hardness | 6.5 |
Optic nature | |
Refractive index | 1.66 |
Birefringence | weak |
Dispersion | |
Specific gravity | 3.2 |
Lustre | vitreous |
Pleochroism | strong |