Small silver skeletal aggregates, golden to bronze in color, shiny, and emerging from a mass of native arsenic. This specimen has not been acidified like many specimens we see on the market.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat).

Brilliant aggregates of small safflorite crystals, accompanied by nickelskutterudite. We can see small proustite crystals with a magnifying glass, along with cobalt and nickel arsenates. A specimen from a classic locality.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat). These type of specimens, although they are not "aesthetic", have an essential systematic and historical interest. For lovers of "gray minerals", like myself...

This good-sized specimen stands out for its branched nickelin growths, with its characteristic bronze color and shine. We can observe crystals in some cavities. It is covered with small safflorite crystals with a gray metallic luster. It is very interesting to observe this substitution. We can also observe well-defined crystals of nickelskutterudite, partially coated with pink cobalt arsenates.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat). These type of specimens, although they are not "aesthetic", have an essential systematic and historical interest. For lovers of "gray minerals", like myself...

Bright silvery to bronze aggregate of allargentum (upper left corner) on matrix. Two sides of the matrix are covered with minute safflorite crystals. The allargentum has pseudocrystalline habit.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat). These type of specimens, although they are not "aesthetic", have an essential systematic and historical interest. For lovers of "gray minerals", like myself...