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Mineralpedia Details for Cymrite

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Cymrite

Cymrite

Formula
Ba(Si,Al)4(O,OH)8┬ĚH2
Crystal System
Monoclinic 
Crystal Habit
Platy 
Cleavage
Good, Fair, None 
Luster
Vitreous - Silky 
Color
brown, colorless, green, dark green 
Streak
white 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle - Uneven 
Hardness
2-3 
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Cymrite from Diablo Range, Santa Clara Co., California, United States

Cymrite
            from Diablo Range, Santa Clara Co., California, United States

Glassy plates in 1cm patches in matrix.

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