Difference between revisions of "Template:Sphene"
From The Gemology Project
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| Specific gravity || 3.45-3.55 | | Specific gravity || 3.45-3.55 | ||
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− | | Lustre || | + | | Lustre || resinous to sub-adamantine |
|- | |- | ||
| Pleochroism || distinct to strong | | Pleochroism || distinct to strong | ||
|} | |} |
Revision as of 14:12, 6 December 2006
Sphene | |
---|---|
Chemical composition | CaTiOSiO4 |
Crystal system | monoclinic |
Habit | wedge shaped, massive |
Cleavage | distinct, prismatic |
Fracture | conchoidal |
Hardness | 5.0-5.5 |
Optic nature | biaxial + |
Refractive index | 1.880-2.099 |
Birefringence | 0.100-0.135 |
Dispersion | high, 0.051 |
Specific gravity | 3.45-3.55 |
Lustre | resinous to sub-adamantine |
Pleochroism | distinct to strong |