Proustite crystals on a calcite layer

Měděnec (Kupferberg), Klášterec nad Ohří, Ústí nad Labem Region, Czech Republic.

Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
Proustite crystals on a calcite layer
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Article codeII.E.0710.001
Old specimen with a nice cluster of small dark red proustite crystals on a calcite layer from a classic location, Medenec (Kupferberg, Czech Republic.
Measures approximately 70x45x35 mm  and weighs approximately 0,140 kilogramme.

The landscape shaped by mining to the north of the former mining town of Medenec (Kupferberg) is a significant component part of mining historical heritage in the central Erzgebirge. Mining was primarily concentrated in the vicinity of the summit Medník.
There is evidence of the mining of iron and silver-bearing copper ores from hard skarns here for a period of almost six centuries.
The distinctive hill is unique not only in the Erzgebirge but also in Europe because of its large number of historic mines. On a small area, approximately 70 adits and shafts were operational between the 15th and the 19th century.

The nickname "Ruby Silver" has been applied to proustite as well as the closely related mineral pyrargyrite.
Proustite is the rarer of the two minerals and is usually found in the same ore veins with pyrargyrite, silver and other silver sulfides.