Aerugite

A variety of Minerals

Aerugite specimen - rock identification

What is Aerugite?

Aerugite is a rare complex nickel arsenate mineral with a variably reported formula: Ni9(AsO4)2AsO6. It forms green to deep blue-green trigonal crystals. It has a Mohs hardness of 4 and a specific gravity of 5.85 to 5.95. It was first described in 1858 in either the South Terres mine of Cornwall, England or in Erzgebirge, Saxony, Germany. The origin is disputed. The most common occurrence is as an incrustation on furnace walls in which ores are roasted. Its name comes from the Latin word aerugo for copper rust.

Aerugite Market Value Calculator

Estimate the market value of Aerugite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

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Aerugite Localities Map

See where Aerugite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

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Quick Facts

Physical Properties

Color
Dark grass-green, blue-green, pale brown.
Hardness (Mohs)
4
Density
5.772 g/cm³
Streak
Pale green, pale blue-green.

Chemical Properties

Chemical Formula
Ni8.5(AsO4)2As5+O8
Elements
As, Ni, O
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