mineral
Gold
Native Gold (Au)
Hardness: 2.5-3; Color: Golden-yellow; Luster: Metallic; Crystal Structure: Isometric (Cubic); Cleavage: None; Specific Gravity: 19.3
- Hardness
- 2
- Color
- Golden-yellow
- Luster
- Metallic
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Physical properties
Hardness: 2.5-3; Color: Golden-yellow; Luster: Metallic; Crystal Structure: Isometric (Cubic); Cleavage: None; Specific Gravity: 19.3
Formation & geological history
Formed primarily in hydrothermal veins associated with igneous activity, or as secondary deposits in sedimentary placer (riverbed) gravels via erosion over millions of years.
Uses & applications
Extensively used in jewelry, electronics as a conductor, dental work, aerospace technology, and as a financial investment/currency.
Geological facts
Gold is extremely malleable; a single ounce can be stretched into a wire 50 miles long. It is also one of the few elements chemically inert enough to resist oxidation in air and water.
Field identification & locations
Identified by its high density (feels heavy for its size), high malleability (it will dent rather than shatter like pyrite), and its bright metallic yellow streak. Commonly found in quartz veins and stream beds.
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