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Ettringite

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SYA912143

Ettringite

Ex coll. Erhard Rawohl, Hildesheim
Classic Locality

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2 × 1.5 cm
Largest Crystal: 
1.80cm
Description

A sharp intense yellow-greenish ettringite crystal on manganese ore

matrix.
 

 Very aesthetic specimen.

Ex collection Erhard Rawohl, Hildesheim

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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