mineral
Galena
Lead Sulfide (PbS)
AI-generated identification · may be incorrectHardness of 2.5 on the Mohs scale, metallic luster, lead-gray color, and perfect cubic cleavage with high specific gravity.
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Physical properties
Hardness of 2.5 on the Mohs scale, metallic luster, lead-gray color, and perfect cubic cleavage with high specific gravity.
Formation & geological history
Formed in hydrothermal veins and sedimentary replacement deposits associated with limestone over millions of years.
Uses & applications
Historically the primary ore of lead and a major source of silver, occasionally used in mineral collections.
Geological facts
Galena has a distinctive high density and was used in early crystal radio receivers as a point-contact diode.
Field identification & locations
Easily identified by its extreme heaviness, cubic cleavage, and dark gray streak; commonly found worldwide in ore-bearing veins.
