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Wardite
Wardite

Iolite
Iolite



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.81
Conchoidal
{001} Perfect
4.5-5
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
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-
-
2.6-2.7
-
3,1
7-7.5
Mg2Al4Si5O18