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Ettringite

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RAF164152

Ettringite

Gem Crystal

Description Tabs

Description
Locality: 
Wessels Mine, Hotazel, Kalahari, Northern Cape Province, South Africa
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 5 × 1 cm
Largest Crystal: 
0.05cm
Description

A most remarkable ettringite specimen. Very rare to get groupings of gemmy crystals like this. A very top specimen. This specimen is worth US150 and up.

80 gr

Mineral Data
What's on the rock

Ettringite

Formula: 
Ca6Al2(SO4)3(OH)12·26H2O
Strunz: 
7.DG.15
Hardness: 
2.0 - 2.5
Type Locality: 
Ettringer Feld, Western lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany