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Magnetite
Magnetite

Sphalerite
Sphalerite



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Magnetite
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Sphalerite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
5.2
Uneven, Conchoidal
None
5.5-6.5
Fe 3O 4Ulrich Henn and Claudio C.
 
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-
-
3.95-4.10
Uneven
{110} Perfect, {110} Perfect, {110} Perfect
3.5-4
(Zn,Fe)SMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references