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Bertrandite
Bertrandite
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Bertrandite
Bertrandite
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Physical Properties

Tenacity

-

Solubility

-

Durability

-

Specific Gravity

2.59-2.60
1 7.18
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Fracture

-

Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

Mohs Hardness

6-7
2 10
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Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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