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Thaumasite

#PD36874

Thaumasite

#PD36874
Availability
Sold
Size
6 x 3 x 2 cm - Sm Cabinet 
Formula
Ca3Si(OH)6(SO4)(CO3)·12H2O (RRUFF)
Locality
Prospect Park, Passaic Co., New Jersey, United States

Compact fibrous white to colorless crystals composing the entire matrix.

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
Phillips Collection

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