Properties
| Category | Sulfide mineral |
|---|---|
| Formula | PbS |
| Crystal system | Cubic |
| Color | Lead gray and silvery |
| Crystal habit | Cubes and octahedra, blocky, tabular and sometimes skeletal crystals |
| Cleavage | Cubic perfect on {001}, parting on {111} |
| Fracture | Subconchoidal |
| Tenacity | Brittle |
| Mohs scale hardness | 2.5–2.75 |
| Luster | Metallic on cleavage planes |
| Streak | Lead gray |
| Diaphaneity | Opaque |
| Specific gravity | 7.2–7.6 |
From the Wikipedia article
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver.
Source
Source record: crystal-compendium/galena/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Galena — revision id 1376153379. Text and properties from Wikipedia, licensed CC BY-SA 4.0.