Amethyst and Mexican fire opal Physical Properties

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Amethyst

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Mexican fire opal

☒

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X

Amethyst

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Mexican fire opal

Amethyst

Amethyst

Mexican fire opal

Mexican fire opal

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

-

insoluble in common solvents

-

2.65

Conchoidal, ConchoidalWalter Schumann

Indiscernible

7

SiO₂

-

-

-

-9999

-

None

-9999

SiO2·nH2O

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