Mineral description : Galena

Image pending : galena from Sala silver mine.

Galena from Ångermanälven, south of Vilhelmina, Västerbotten.

Galena from Cornwall, England.

Mineral class	Sulphides : galena group
Chemical formula	PbS
Crystal system	Cubic
Habitus	Crystals often as cubes, but also octaedric. Also as massive grainy to coarse aggregates.
Cleavage	Cubic cleavage (characteristic)
Hardness	2.5
Density	7.4-7.6
Color	Led gray.
Streak	Gray
Luster	Metallic on fresh surfaces, matte tarnish.
Description
Occurance	In hydrothermal veins with sphalerite. As impregnations in sandstone (sedimentary). Also common in limestone as contactpneumatotic occurencies.
Associates	Flourite and sphalerite.
Notes
Locations	A common mineral in Sweden, rarely as crystals. In the randzone of the caledonides. As impregnations in sandstone. In many of the mines in Skellefteå mining field. In many of the sulphide bearing mines in Bergslagen mining field. Galena can be found as crystals in In the Nordmark mines. As small crystals in holes with sphalerite and baryte. Knollegruvan, Dalsland. As small crystals in dolomite. Gladsax and Gislöv in Skåne. As up to 1cm crystals with flourite bearing calcite veins. Solberga, Boda, Dalarna. As small crystals in cracks in limestone.

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