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Wickmanite & Argyrodite

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SKY775138

Wickmanite & Argyrodite

Rare Mineral

Description Tabs

Description
Locality: 
Colquechaca, Chayanta Province, Potosi Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.6 × 0.4 cm
Description

Pale yellow crystals of the very rare mineral wickmanite associated to metallic argyrodite and a single crystal of deep red proustite (photo 2).

Wickmanite is a rare Mn-Sn-hydroxide.

Analyzed by SEM-EDS , see copy attached and also photo SEM in the analysis section.

Mineral Data
What's on the rock

Wickmanite

Formula: 
Mn2+[Sn(OH)6]
Strunz: 
4.FC.10
Hardness: 
4.0 - 4.5
Type Locality: 
Långban, Filipstad, Värmland, Sweden

Argyrodite

Formula: 
Ag8GeS6
Strunz: 
2.BA.70
Hardness: 
2.5 - 3.0
Type Locality: 
Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany

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