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Edwardsite & Niedermayrite

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JYJ801021

Edwardsite & Niedermayrite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.3 × 1.2 cm
Description

Blue SCXRD & SEM-EDS confirmed edwardsite associated with niedermayrite and gunningitte. Edwardsite has typcically an arrow like crystal morphology. The matrix is germanite, Cd rich sphalerite and enargite. 

 

Mineral Data
What's on the rock

Edwardsite

Formula: 
Cu3Cd2(SO4)2(OH)6·4H2O
Strunz: 
7.DD.30
Hardness: 
3.0 - 0.0
Colour: 
Pale blue
Type Locality: 
Block 14 opencut, Broken Hill, Yancowinna Co., New South Wales, Australia

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
Analysis
Analysis Report - only: Edwardsite & Niedermayrite
Analysis Report - only: Edwardsite & Niedermayrite