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Mahnertite

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JYJ708340

Mahnertite

Description Tabs

Description
Locality: 
Brachbach, Kirchen, Altenkirchen, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 1.8 × 1.5 cm
Description

A very good and rich coverage of mahnertite and erythrite with brochantite on weathered tennantite ore. This is the first record from Germany. 

After the first analysis by Raman spectroscopy lavendulan was suggested, but SEM-EDS reaveled dominance of Cu fitting well with mahnertite. 

Mineral Data
What's on the rock

Mahnertite

Formula: 
NaCu3(AsO4)2Cl·5H2O
Strunz: 
8.DH.45
Crystal System: 
Tetragonal
Hardness: 
2.0 - 3.0
Type Locality: 
Cap Garonne Mine, Le Pradet, Var, Provence-Alpes-Côte d'Azur, France...