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Iolite
Iolite

Meionite
Meionite



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.6-2.7
-
3,1
7-7.5
Mg2Al4Si5O18
 
-
-
-
2.78
Uneven, Conchoidal
{???} Distinct, {???} Indistinct
5-6
3CaAl 2Si 2O 8 · CaCO 3Anthony et al , Handbook of mineralogy (2001)