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Thaumasite on Prehnite

#BM50957

Thaumasite on Prehnite

#BM50957
Availability
Sold
Size
7.5 x 5 x 3.5 cm - Sm Cabinet 
Formula
Ca3Si(OH)6(SO4)(CO3)·12H2O (RRUFF)
Locality
Paterson, Passiac Co., New Jersey, United States
Tagged
carbonate

White to brown coating of Thaumasite on faint green Prehnite. Ex. J. Cilen.

Thaumasite

Formula
Ca3Si(OH)6(SO4)(CO3)·12H2
Crystal System
Hexagonal 
Crystal Habit
Radial, Massive - Fibrous, Fibrous 
Cleavage
Poor, None, None 
Luster
Vitreous - Silky 
Color
colorless, white 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5 

Data courtesy of Webmineral.

Collection
Bill McConlogue Collection

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