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Kremersite

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JYJ540056

Kremersite

Description Tabs

Description
Locality: 
Anna Mine, Alsdorf, Cologne, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.5 × 2 cm
Description

Orange-red kremersite crystals and alunogen. The perky boxed is sealed du to the hygroscopic mineral property of kremersite. 

Mineral Data
What's on the rock

Kremersite

Formula: 
(NH4,K)2[Fe3+Cl5(H2O)]
Strunz: 
3.CJ.10
Hardness: 
0.0
Colour: 
Brown-red
Type Locality: 
Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy