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Alunogen

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CR614637

Alunogen

Rare Mineral

Description Tabs

Description
Locality: 
María Josefa Mine, Rodalquilar, Níjar, Almería, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
14 × 10 × 5.5 cm
Description

Beautiful silky white groups of tabular alnuogen crystals with blue chalkanthite from a single find in 2010.

Very rich and good specimen. PXRD confirmed.

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