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Ettringite & Celestine

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Ettringite & Celestine

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Description
Locality: 
Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 4 × 4 cm
Largest Crystal: 
0.20cm
Weight: 
200.00gr
Description

Nice sample of yellow ettringite with trasparent celestine

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

Celestine

Formula: 
SrSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White
Type Locality: 
Bell's Mill, Bellwood, Blair Co., Pennsylvania, USA...
Webminerals s.a.s