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Native Arsenic Hedyphane & Mimetite

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JYJ714969

Native Arsenic Hedyphane & Mimetite

EDS ver. specimen no 2019-03-31-46

Description Tabs

Description
Locality: 
Långban, Filipstad, Värmland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.5 × 1.5 cm
Description

EDS ver. specimen no 2019-03-31-41 hosting striated native arsenic in a greyish mass that consists of mimetite/finnemannite?  and minor yellow translucent hedyphane spots. Minor arsenolite in Raman data, overlay with native arsenic.

Mineral Data
What's on the rock

Arsenic

Formula: 
As
Strunz: 
1.CA.05
Crystal System: 
Trigonal
Hardness: 
3.5
Streak: 
Grey

Hedyphane

Formula: 
Pb3Ca2(AsO4)3Cl
Strunz: 
8.BN.05
Hardness: 
4.0 - 5.0
Type Locality: 
Långban, Filipstad, Värmland, Sweden

Mimetite

Formula: 
Pb5(AsO4)3Cl
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Treue Freundschaft Mine, Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany
Analysis
Analysis Report - only: Native Arsenic Hedyphane & Mimetite
Analysis Report - only: Native Arsenic Hedyphane & Mimetite
Analysis Report - only: Native Arsenic Hedyphane & Mimetite