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Thulite
Tortoiseshell
Tortoiseshell and Thulite Physical Properties


Physical Properties
Tenacity
-  
-  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
3.1  
1.25-1.35  
Fracture
Uneven, Conchoidal  
-  
Cleavage
Perfect {010} imperfect {100}  
None  
Mohs Hardness
6-7  
-9999  
Chemical Composition
Ca2Al3(SiO4)3(OH)  
-  
Optical Properties >>
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