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Glaucophane
Glaucophane
☒

Franklinite
Franklinite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3-3.15
Conchoidal
Good on [110] and on [001]
6.0-6.5
[ ]Na2(Mg3Al2)Si8O22(OH)2
 
-
-
-
5.05-5.22
Uneven
None
5.5-6
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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