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Alunogen

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GFM629114

Alunogen

Rare Mineral

Description Tabs

Description
Locality: 
Becker Shaft, Hänichen, Dresden, Saxony, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 2.7 × 1.5 cm
Largest Crystal: 
0.20cm
Description

white to pale yellow crystals of 2 mm, very rich on a matrix of massive alunogen. Very good historic specimens collected around 1890

Mineral Data
What's on the rock

Alunogen

Formula: 
Al2(SO4)3·17H2O
Strunz: 
7.CB.45
Crystal System: 
Trigonal
Hardness: 
1.5 - 2.0
Streak: 
White