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Pyroxmangite
Charoite
Charoite and Pyroxmangite Physical Properties


Physical Properties
Tenacity
-  
-  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
3.76-3.77  
2.54-2.78  
Fracture
-  
Conchoidal  
Cleavage
{110} Perfect, {110} Perfect  
Good in three directions  
Mohs Hardness
5-6  
5-6  
Chemical Composition
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.  
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references  
Optical Properties >>
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