Galena

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This article is about the mineral. For various cities and towns of that name, see Galena (disambiguation).
Galena
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GalenaUSGOV.jpg
Galena (Lead sulfide)
General
CategoryMineral
Chemical formula lead sulfide (PbS)
Identification
Colour Lead gray, silvery
Crystal habit Cubes, tabular and sometimes skeletal crystals
Crystal system Isometric
Cleavage Cubic
Fracture Flat (when cubic) to even
Mohs Scale hardness 2.5 - 2.75
Luster Metallic
Refractive index Opaque
Pleochroism None
Streak Lead gray
Specific gravity 7.4 - 7.6
Fusibility 2

Galena is a lead ore. This article describes Galena's mineral properties. In its chemically purified form, galena is known as lead sulfide; refer to that article for chemical and industrial uses.

Galena is one of the most abundant and widely distributed sulfide minerals, and is the most common ore of lead. Crystals are usually cubic, sometimes octahedral. It is often associated with the minerals sphalerite and fluorite. Galena deposits sometimes contain significant amounts of silver as an impurity, and these galenas have long been the most important ore of silver in mining.

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Galena_Poland.jpg
Galena from Poland

Galena deposits are found in Germany, France, Romania, Austria, Belgium, Italy, Spain, Scotland, England, Australia, and Mexico. In the United States it occurs in Missouri, Illinois, Iowa, Kansas, Oklahoma, Colorado, Idaho, Utah, Montana, and Wisconsin.

Galena is the official state mineral of Missouri and Wisconsin, USA.


Template:Mineral-stub

See also

nl:Galena pl:Galena

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