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Cordierite Iolite
Cordierite Iolite

Hiddenite
Hiddenite



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Cordierite Iolite
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Hiddenite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.56-2.66
Uneven, ConchoidalWalter Schumann
Distinct
7-7.5
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
 
-
-
-
3.15-3.21
-
1,2 prismatic
6-7
LiAlSi2O6