A striking cube-shaped formation of galena, showcasing its metallic luster and cubic structure, from Illinois, US.
Geological Information:
- Location: Illinois, US (notably in the Galena-Platteville Formation) - Type: Galena (a type of lead sulfide mineral) - Chemical Composition: PbS (Lead Sulfide) - Age: Approximately 450-480 million years old (Ordovician Period) - Formation: Hydrothermal veins, specifically in the dolostone and limestone rocks of the Midwestern United States - Hardness: 2.5-3 on the Mohs scale - Distinctive Features: Metallic luster, cubic structure, and high density, characteristic of galena.
This description highlights the scientific significance and geological context of the Galena Cubes, showcasing its importance as a mineral specimen. The metallic luster and cubic structure make it a valuable example of galena formation.
