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Bastnasite
Bastnasite
☒

Sardonyx
Sardonyx
☒



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Bastnasite
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Sardonyx
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.95-5.0
Uneven
Imperfect to indistinct on {10 1 0}, parting on {0001}
4-5
(Ce,La)(CO 3)FMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
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-
-
2.55-2.70
-
None
6.5-7
SiO 2Ulrich Henn and Claudio C.

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