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Alunogen

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JYJ106322

Alunogen

Description Tabs

Description
Locality: 
São Domingos Mine, Corte do Pinto, Mértola, Beja District, Portugal
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2 × 1 cm
Description

Light blueish crystals of alunogen, an Al containing sulfate. The tattered cystal shape is typical for the species.

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