galena

noun

1. a common, heavy mineral, lead sulfide, PbS, occurring in lead-gray crystals, usually cubes, and cleavable masses: the principal ore of lead.

noun

1. a grey mineral, found in hydrothermal veins. It is the chief source of lead. Composition: lead sulphide. Formula: PbS. Crystal structure: cubic

n.

lead ore, lead sulphide, c.1600, from Latin galena “mix of silver and lead; dross from smelting lead,” of unknown origin.

1. A gray, metallic mineral occurring in cube-shaped crystals within veins of igneous rock or in sedimentary rocks. It is the main ore of lead. Chemical formula: PbS.