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Cordierite
Cordierite
☒

Friedelite
Friedelite
☒



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Cordierite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18
 
-
-
-
3.06-3.19
Uneven
{010} Perfect
4-5
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Compare Blue Gemstones

Blue Gemstones

Rosasite
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Friedelite
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Kainite
Friedelite Vs Kainite
Friedelite
Lawsonite
Friedelite Vs Lawsonite

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