Iolite and Apophyllite KF Physical Properties

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Iolite

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Apophyllite KF

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Iolite

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Apophyllite KF

Iolite

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Apophyllite KF

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

-

-

-

2.6-2.7

-

3,1

7-7.5

Mg₂Al₄Si₅O₁₈

Brittle

-

-

2.33-2.37

Uneven

Perfect on {001}, imperfect on {110}

4.5-5

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Chrysanthemum Stone

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