mineral
Galena
Lead Sulfide (PbS)
AI-generated identification · may be incorrectHardness 2.5 on Mohs scale, metallic lead-gray color, bright metallic luster, cubic crystal system, perfect cubic cleavage, and exceptionally high specific gravity around 7.4-7.6.
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Physical properties
Hardness 2.5 on Mohs scale, metallic lead-gray color, bright metallic luster, cubic crystal system, perfect cubic cleavage, and exceptionally high specific gravity around 7.4-7.6.
Formation & geological history
Forms in hydrothermal veins associated with limestone, commonly found alongside sphalerite, calcite, and quartz in low-to-medium temperature environments.
Uses & applications
Historically the world's primary ore of lead and an important source of silver, currently used in lead-acid batteries, radiation shielding, and mineral collecting.
Geological facts
Galena has a high refractive index and was used as a crystal detector in early radio receivers, known as cat's whisker detectors.
Field identification & locations
Easily identified by its heavy weight, bright metallic luster, and distinct cubic cleavage that breaks into small cubes. Found globally, notably in Missouri, USA, and Germany.
