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Argentopyrite & Rammelsbergite

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JYJ820447

Argentopyrite & Rammelsbergite

Description Tabs

Description
Locality: 
Uranus Mine, Kleinrückerswalde, Annaberg-Buchholz, Erzgebirge, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.5 × 4 cm
Description

Black metallic argentopyrite on dendritic rammelsbergite and brassy psm of pyrite after argentopyrite. 

SEM-EDS & PXRD confirmed. Analysis in the analytical section. 

PXRD of rammelsbergite on request.

Mineral Data
What's on the rock

Argentopyrite

Formula: 
AgFe2S3
Strunz: 
2.CB.65
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.0
Streak: 
Grey.
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Rammelsbergite

Formula: 
NiAs2
Strunz: 
2.EB.15a
Hardness: 
5.5 - 6.0
Type Locality: 
Schneeberg District, Erzgebirge, Saxony, Germany
Analysis
Analysis Report - only: Argentopyrite & Rammelsbergite
Analysis Report - only: Argentopyrite & Rammelsbergite
Analysis Report - only: Argentopyrite & Rammelsbergite
Analysis Report - only: Argentopyrite & Rammelsbergite
Analysis Report - only: Argentopyrite & Rammelsbergite