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Retgersite On Gersdorffite

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CLB558030

Retgersite On Gersdorffite

ex collection Norbert Fenten, ex Dr. Krantz
Classic Locality

Description Tabs

Description
Locality: 
Friedrichssegen Mine, Bad Ems, Rhineland-Palatinate, Germany
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4 × 2 cm
Description

Secondary green retgersite crystals almost completely covering gray-black gersdoffite crystals, peeking out of the 'lawn' here and there. Good coverage on both sides. Both minerals are very rare from the locality.

Ex Dr. Krantz, but no old label.

Mineral Data
What's on the rock

Retgersite

Formula: 
NiSO4·6H2O
Strunz: 
7.CB.30
Crystal System: 
Tetragonal
Hardness: 
2.5
Type Locality: 
Ragra Mine (Minasragra), Huayllay District, Pasco Province, Pasco Department, Peru

Gersdorffite

Formula: 
NiAsS
Strunz: 
2.EB.25
Crystal System: 
Isometric
Hardness: 
5.5
Type Locality: 
Zinkwand, Obertalbach valley, Schladminger Tauern, Schladming, Styria, Austria

Seller Information

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