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409. Phillipsite. Crystaline

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Dana number

77.1.3.6

Chemical formula

(K,Na,Ca,Ba)_1-2(Si,Al)₈O₁₆.6H₂O

Crystal class

Monoclinic

Mohs hardness

4-4.5

Specific gravity

2.19-2.20

Collected in

Blackhead, NSW, Australia

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