mineral
Galena
Lead sulfide (PbS)
Hardness: 2.5 on the Mohs scale, Color: Lead-gray, Luster: Metallic, Crystal Structure: Isometric (cubic), Cleavage: Perfect cubic cleavage in three directions, Specific Gravity: High density (7.4 to 7.6 g/cm3)
- Hardness
- 2
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Physical properties
Hardness: 2.5 on the Mohs scale, Color: Lead-gray, Luster: Metallic, Crystal Structure: Isometric (cubic), Cleavage: Perfect cubic cleavage in three directions, Specific Gravity: High density (7.4 to 7.6 g/cm3)
Formation & geological history
Forms in hydrothermal veins, replacement deposits in limestone and dolomite, and in sedimentary environments worldwide.
Uses & applications
Historically one of the primary ores of lead; used in lead-acid batteries, radiation shielding, ammunition, and historically in crystal radios.
Geological facts
Galena has been mined for thousands of years, dating back to ancient Egypt where it was ground into kohl and used as eye makeup.
Field identification & locations
Easily identified by its high density, dark gray streak, cubic cleavage, and bright metallic luster. Found worldwide, particularly in locations like Missouri (USA), Mexico, and Germany.
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