Mineral description : Copper

Copper from Kondopoga, Karelia, Russia.

Mineral class	Elements : Copper-silver-gold group
Chemical formula	Cu
Crystal system	Cubic
Habitus	As flakes or branches, rarely as octaedric crystals.
Cleavage	None, malleable.
Hardness	2.5-3
Density	8.9
Color	Red on fresh surfaces. Often with black or green tarnish.
Streak	Copper red.
Luster	Metallic
Description
Occurance
Associates
Notes	Easily dissolved in nitric acid, solution is colored blue by ammoniac.
Locations	A rare mineral in Sweden. Jakobsberg mine, Nordmark. As small flakes in hausmanite impregnated dolomite. Harstigen, Långban and Pajsberg, all near Persberg. Sunnerskogs copper mine, Småland. Grängsbo copper mine, Gästrikland. Falu mine. Norberg, Västmanland. Malmberget, Lappland. Kristineberg, Lappland. Garpenberg, Dalarna.

To elements index.

Mineral group index.

Main index.

If you have some questions, suggestions or comments you are welcome to write me a line or two.