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Ettringite

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Ettringite

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Description
Locality: 
Wessels Mine, North Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 2 × 2 cm
Largest Crystal: 
0.05cm
Weight: 
42.00gr
Description

A gemmy canary-yellow ettringite crystals to 4 mm nicely spread on the matrix from the famous Wessels Mine in South Africa. 

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
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