mineral

Galena

Lead(II) sulfide (PbS)

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

Hardness: 2
Color: Lead gray
Luster: Metallic

Identified May 23, 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 to 7.6

Formation & geological history

Formed in hydrothermal veins and through metasomatic replacement in sedimentary rocks like limestone and dolomite, often associated with sphalerite and silver minerals.

Uses & applications

Primary ore of lead; used in batteries, lead-acid systems, radiation shielding, and traditionally as an ore for silver extraction.

Geological facts

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

Field identification & locations

Identify by its unusually high weight (density), metallic gray luster, and cubic cleavage. It will leave a gray to black streak when rubbed on ceramic.