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Franklinite
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Cordierite
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Franklinite
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Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
Physical Properties
Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
-
-
-
5.05-5.22
Uneven
None
5.5-6
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Brittle
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18
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