Gold

Physical Properties

Hardness: 2.5–3 on Mohs scale; Color: Golden-yellow; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 19.3 (pure)

Formation & Geological History

Formed in hydrothermal quartz veins and as placer deposits in sedimentary environments. It is often created during late-stage volcanic activity or as a byproduct of mountain-building processes.

Uses & Applications

Used primarily in jewelry, currency, electronics due to high conductivity, dentistry, and aerospace engineering.

Geological Facts

Gold is incredibly ductile; a single ounce can be drawn into a wire 50 miles long. It is also nearly indestructible and chemically inert, meaning it won't rust or tarnish.

Field Identification & Locations

Identify by its high density (heaviness), soft malleability (it bends rather than shatters), and persistent metallic luster even in low light. Found in lode deposits or sifted from riverbeds.

Identified on: 4/27/2026

Mode: Standard