mineral

Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur).

Galena (PbS)

Hardness: 2.5 on Mohs scale; Color: Lead-gray; Luster: Metallic; Crystal Structure: Isometric (cubic); Cleavage: Perfect cubic; Specific Gravity: 7.4–7.6.

Hardness: 2
Color: Lead-gray
Luster: Metallic

Identified March 16, 2026More mineral →

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Physical properties

Hardness: 2.5 on Mohs scale; Color: Lead-gray; Luster: Metallic; Crystal Structure: Isometric (cubic); Cleavage: Perfect cubic; Specific Gravity: 7.4–7.6.

Formation & geological history

Formed in hydrothermal veins, often in contact metamorphic deposits. Can occur in sedimentary rocks as replacements. Common in limestone and dolostone.

Uses & applications

Primary ore of lead; used in batteries, radiation shielding, and historical electronics (crystal radio detectors). Formerly used in ceramic glazes.

Geological facts

Galena is one of the most abundant and widely distributed sulfide minerals. It often contains significant amounts of silver as an impurity, making it an important silver ore as well.

Field identification & locations

Identify in the field by its high density (feels very heavy for its size), metallic luster, and distinct cubic cleavage. Common in Missouri (US), British Columbia, and Germany.

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