Mineral description : Lead

Native lead from a fracture. From Långban.

Mineral class	Elements : Copper-silver-gold group
Chemical formula	Pb
Crystal system	Cubic
Habitus	As coatings, plates and balls. Rarely as octaedric crystals.
Cleavage	None, malleable.
Hardness	1.5
Density	11.4
Color	Gray, but often black of tarnish.
Streak	Gray metallic.
Luster	Metallic on fresh surfaces, else dull.
Description
Occurance	Created under reducing conditions in mangan ores.
Associates	Mangan minerals.
Notes	Easily dissolved in nitric acid.
Locations	Långban, Värmland. An internationally famous location. Pieces of lead up to 15 kg and crystals up to 4 cm have been found here. In cracks in dolomite, mangan scarn and ore. Often together with pyrochroite, hydrocerrusite and cerrusite. Jakobsberg, Värmland. Harstigen, Persberg, Värmland. Crystals in holes in garnet-schefferite scarn together with baryte, brandtit, calcite, svabite, hematite, litargite and cerrusite. Crackfillings in haussmannite dotted dolomite, thin coverings with tefroite. Pajsberg, Persberg, Värmland. Sjögruvan, Persberg, Värmland.

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