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Shattuckite
Shattuckite

Sardonyx
Sardonyx



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Shattuckite
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Sardonyx
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.80-4.15
Uneven
perfect along [010] and [100]
3.5-4
Cu 5(SiO 3) 4(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
-
-
2.55-2.70
-
None
6.5-7
SiO 2Ulrich Henn and Claudio C.