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Brookite
Magnetite
Magnetite and Brookite Physical Properties


Physical Properties
Tenacity
Brittle  
-  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
3.87-4.14  
5.2  
Fracture
Subconchoidal, Conchoidal  
Uneven, Conchoidal  
Cleavage
Poor on {120}, in traces on {001}  
None  
Mohs Hardness
5.5-6  
5.5-6.5  
Chemical Composition
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references  
Fe 3O 4Ulrich Henn and Claudio C.  
Optical Properties >>
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