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Axinite
Sphalerite
Sphalerite and Axinite Physical Properties


Physical Properties
Tenacity
-  
-  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
3.26-3.36  
3.95-4.10  
Fracture
Conchoidal  
Uneven  
Cleavage
Good on {100}  
{110} Perfect, {110} Perfect, {110} Perfect  
Mohs Hardness
6.5-7  
3.5-4  
Chemical Composition
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references  
(Zn,Fe)SMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references  
Optical Properties >>
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