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Agrellite
Agrellite

Hambergite
Hambergite



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Agrellite
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Hambergite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.88
-
perfect [110]
5.5
NaCa2Si4O10F
 
Brittle
-
-
2.33-2.37
ConchoidalWalter Schumann
Perfect on {010}, good on {100}
7.5
Be 2BO 3(OH)Ulrich Henn and Claudio C.