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Native Silver Acanthite Fluorite & Gold

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CLB500375

Native Silver Acanthite Fluorite & Gold

Classic Locality

Description Tabs

Description
Locality: 
Kongsberg Silver Mines, Kongsberg, Viken, Norway
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.1 × 3 cm
Description

Very fine silver wire on matrix. Not anaylzed, but I think the dark gray material is acanthite (with a few tiny, not pictured gold particles) and the lavender colored should be fluorite.

The gold indication might be important for most collectors, but I can't give a guarantee for this.There are microscopic golden grains in the matrix I'm pretty sure of, and I found it interesting enough to mention this. But it's just too small and, like I said before, I can't guarantee. Someone with a microscope might confirm this.

Mineral Data
What's on the rock

Silver

Formula: 
Ag
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

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

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Gold

Formula: 
Au
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

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