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Ettringite - Charlesite

#BAC63136

Ettringite - Charlesite

#BAC63136
Availability
Sold
Size
4 x 3 x 1 cm - Miniature 
Formula
Ca6Al2(SO4)3(OH)12·26H2O (RRUFF)
Locality
N'Chwaning mines, Kuruman, Northern Cape prov., South Africa

Yellow plates with Xonotlite in-between.

Ettringite

Formula
Ca6Al2(SO4)3(OH)12·26H2
Crystal System
Hexagonal 
Crystal Habit
Acicular 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Hardness
2-2.5 

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection

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