Difference between revisions of "Chalcedony"

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! colspan=2 | Chalcedony
 
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| Crystal system || edit me
 
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| Habit || edit me
 
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| Cleavage || edit me
 
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| Fracture || edit me
 
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| Hardness || edit me
 
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| Optic nature || edit me
 
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| Refraction index || edit me
 
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| Birefringence || edit me
 
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| Dispersion || edit me
 
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Revision as of 22:47, 13 September 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