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Fire Agate
Franklinite
Franklinite and Fire Agate Physical Properties


Physical Properties
Tenacity
-  
-  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
2.60-2.64  
5.05-5.22  
Fracture
Uneven, Splintery, Conchoidal  
Uneven  
Cleavage
Absent  
None  
Mohs Hardness
6.5-7  
5.5-6  
Chemical Composition
SiO 2Arthur Thomas , Gemstones (2009)  
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)  
Optical Properties >>
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