Black Opal and Lepidocrocite Physical Properties

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Black Opal

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Lepidocrocite

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Black Opal

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Lepidocrocite

Black Opal

Black Opal

Lepidocrocite

Lepidocrocite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

-

-

-

1.97-2.22

Conchoidal

None

6-6.5

SiO 2 + H 2OUlrich Henn and Claudio C.

-

-

-

4

Uneven

{010} Perfect

5

FeO(OH)

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