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Ettringite

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HCH151315

Ettringite

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Description
Locality: 
Rothenberg, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 1.5 cm
Largest Crystal: 
0.05cm
Description

White sprays of Ettringite up to 0.5mm large on Xenolithe.

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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