Aerugite

Source: Wikipedia, the free encyclopedia.
Aerugite
Specific gravity
5.85–5.95
References[2][3][4]

Aerugite is a rare complex

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 the Ore Mountains, 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.

See also

References