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Niedermayrite

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JYJ572085

Niedermayrite

Description Tabs

Description
Locality: 
Laurani Mine, La Paz Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1 × 0.8 cm
Description

Intense blue, partly triangular crystals (typical for niedermayrite), up to 150µm on sulfidic matrix accompanied by enargite.

Niedermayrite was confirmed analytically (EDS) in 2015 in sulfidic matrix with enargite. I attached the analysis in the analysis section. the specimen also hosts Cd rich colourless to green needles, maybe a Cd rich serpierite. Aldridgeite would be the Cd dominant member.

Mineral Data
What's on the rock

Niedermayrite

Formula: 
CdCu4(SO4)2(OH)6·4H2O
Strunz: 
7.DD.30
Crystal System: 
Monoclinic
Hardness: 
0.0
Streak: 
White
Type Locality: 
Esperanza Mine, Lavrion (Laurion; Laurium), Lavrion District Mines, Lavrion District (Laurion; Laurium), Attikí Prefecture (Attica; Attika), Greece