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Strätlingite & Ettringite

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ESM567352

Strätlingite & Ettringite

Type Locality

Description Tabs

Description
Locality: 
Bellerberg, Ettringen, Eifel Mountains, Rhineland-Palatinate, Germany
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 2 × 1.6 cm
Description

Acicular white crystals of ettringite with white tabular strätlingite crystals

Mineral Data
What's on the rock

Strätlingite

Formula: 
Ca2Al2SiO7·8H2O
Strunz: 
9.EG.25
Crystal System: 
Trigonal
Hardness: 
0.0
Type Locality: 
Mayener Feld, Southern lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

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