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360. Zinnwaldite. Crystaline

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Dana number

71.2.2b.10

Chemical formula

KLiFe²⁺Al[AlSi₃O₁₀](F,OH)₂

Crystal class

Monoclinic

Mohs hardness

2.5-4

Specific gravity

2.90-3.02

Collected in

Tantalite Hill, Londonderry, WA, Australia

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