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Gold With Mixite & Bismite

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LGM557621

Gold With Mixite & Bismite

Ex Lehnen collection, Möchgengladbach, Germany
Classic Locality

Description Tabs

Description
Locality: 
Hilarion Mines, Lavrion, Hilarion Mine, Hilarion, Kamariza, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.7 × 2.2 cm
Weight: 
11.00gr
Description

Tiny gold specks on pseudomorphs of bismite after bismutite / bismuthinite, accompanied by blue-green sprays of mixite on earthy brown matrix. Surely good for further analysis of the mineral composition.

A very rare and hard to get locality specimen from ancient Lavrion mines. The area was mined since the egyptian age and most intensively from 600 B.C. to 100 A.D., for silver, lead and other metals. The Lavrion mines were the main source of wealth for the city of Athens during the classical times (5th-4th century B.C.). They were abandoned during the Roman times and reopened in 1865. All mining activity stopped in 1984.

Mineral Data
What's on the rock

Gold

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

Mixite

Formula: 
BiCu6(AsO4)3(OH)6·3H2O
Strunz: 
8.DL.15
Crystal System: 
Hexagonal
Hardness: 
3.0 - 4.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Bismite

Formula: 
Bi2O3
Strunz: 
4.CB.60
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Colavi Mine, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

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