Gold in Quartz Matrix

Physical Properties

Hardness: 2.5-3 (Gold) / 7 (Quartz); Color: Metallic golden yellow on dark grey/black; Luster: Metallic; Crystal Structure: Isometric (Gold); Cleavage: None; Specific Gravity: 19.3 (Gold)

Formation & Geological History

Formed via hydrothermal veins where mineral-rich hot fluids deposit metals into rock fractures. These deposits are often found in metamorphic belts or associated with igneous intrusions.

Uses & Applications

Primary source of gold for currency, investment, high-end jewelry, and electronics due to its conductivity.

Geological Facts

Most gold found in nature is in the form of 'native gold,' meaning it is not chemically bonded to other elements. This specimen shows gold embedded in a dark host rock, likely a silicified slate or shale.

Field Identification & Locations

Identify by its high density and malleability (it will dent, not shatter). Look for heavy black sands or quartz outcrops in known gold-bearing regions like California, Alaska, or Australia.

Identified on: 5/19/2026

Mode: Standard