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Brucite
Brucite

Pyrrhotite
Pyrrhotite



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Brucite
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Pyrrhotite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Sectile
-
-
2.39
Irregular
Perfect on {0001}
2.5
Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
Soluble
-
4.58-4.65
Uneven
Absent
3.5-4.5
Fe1-xS