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Gold Electrum

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RSL611259

Gold Electrum

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Description Tabs

Description
Locality: 
Taghouni Mine, Taghouni, Bou Azzer, Ouarzazate Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 2.5 × 1.5 cm
Largest Crystal: 
0.60cm
Description

A novelty in Sainte-Marie-aux-Mines (2017). These specimens show a matrix formed by arsenates such as erythrite and associated sulphides and arsenates of cobalt and iron. We can observe on both the presence of a very aerial filiform (wire) and laminar gold.
SEM-EDS analysis I made has shown that this is a variety of gold rich in silver (23-24%w): electrum. We will send all analysis to the buyer. The gold and electrum in Bou Azer was already described, but the quality of these specimens we offer surpasses what was known.

Mined: 
2017
Mineral Data
What's on the rock

Gold

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

Electrum

Variety Of: 

Gold

Formula: 
Au
Strunz: 
1.AA.05
Hardness: 
2.5 - 3.0
Formula: 
(Au, Ag)
Strunz: 
1.AA.05
Hardness: 
0.0
Analysis
Analysis Report - only: Gold Electrum