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Ettringite

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RAF692289

Ettringite

Classic Locality

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 2.8 × 1.5 cm
Largest Crystal: 
0.08cm
Weight: 
12.00gr
Description

A fine Ettringite specimen from N'Chwaning II, Northern Cape Provance, 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