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Blue spinel
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Magnetite
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Blue spinel
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Magnetite
Blue spinel
Magnetite
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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
-
-
-
-9999
-
None
-9999
MgAl2O4
-
-
-
5.2
Uneven, Conchoidal
None
5.5-6.5
Fe 3O 4Ulrich Henn and Claudio C.
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