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Acanthite & Pyrargyrite

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JYJ715728

Acanthite & Pyrargyrite

Description Tabs

Description
Locality: 
St Andreasberg, Goslar, Lower Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 3.2 × 2.5 cm
Description

A very rare and rather unusual specimen front St. Andreasberg with bright grey acanhite cages on pyrargyrite. This specimen was SEM-EDS analysed. Comes with a old label dating to 1972.

Mineral Data
What's on the rock

Acanthite

Formula: 
Ag2S
Strunz: 
2.BA.35
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 2.5
Streak: 
lead grey
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Pyrargyrite

Formula: 
Ag3SbS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal - Ditrigonal Pyramidal
Hardness: 
2.5
Labels
Label Images - only: Acanthite & Pyrargyrite