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Ettringite

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CAM55394

Ettringite

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 4.1 × 4.8 cm
Largest Crystal: 
0.60cm
Description

Gemmy yellow ettringite crystals up to 6 mm on a contrasting matrix of mm-sized calcite crystals.

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
Cartils Minerals

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