Native Gold in Quartz and Sulfide Ore Matrix
Raw Gold Ore (Lode Gold Specimen) · Native Yellow Gold (unrefined, naturally occurring)
Purity: Estimated 20K-23K (83%-96% gold content). Raw gold in quartz/lode deposits typically contains 4% to 15% silver or copper as natural alloys.
Type
Raw Gold Ore (Lode Gold Specimen)
Purity
Estimated 20K-23K (83%-96% gold content). Raw gold in quartz/lode deposits typically contains 4% to 15% silver or copper as natural alloys.
Gold Type
Native Yellow Gold (unrefined, naturally occurring)
Weight
Estimated total specimen weight 50-150g; Gold content likely 0.5-2.0 grams (0.01-0.06 troy oz) based on visible surface area and host rock density.
Description
An impressive lode gold specimen featuring visible free gold sequestered within a matrix of quartz and sulfide-rich host rock. The gold shows the characteristic 'jagged' and crystalline structure typical of high-grade ore, appearing as distinct veins and pockets. The dark minerals in the matrix suggest the presence of sulfite minerals often associated with gold-bearing hydrothermal veins.
Key Features
High-contrast visible gold, crystalline metallic structure, association with quartz/sulfide, heavy specific gravity relative to size.
Color & Finish
Deep, rich buttery yellow gold with a dull to sub-metallic luster. The host rock consists of greyish-black sulfides and white crystalline quartz with a rough, fractured surface.
Hallmarks & Stamps
None (Natural geological specimen). Identification is based on mineralogical characteristics such as sector-purity, malleability, and color.
Dimensions Estimate
Estimated 5cm x 4cm (roughly 2 inches by 1.5 inches) for the visible specimen fragment.
Gemstones & Inlays
No gemstones; natural inlays of quartz and likely iron sulfides (possibly arsenopyrite or pyrite) forming the matrix.
Clasp & Closure
Not applicable (Raw mineral specimen).
Chain & Links
Not applicable (Rough geological structure). The gold appears as irregular crystalline grains and stringers within the host rock.
Craftsmanship Details
Natural geological 'craftsmanship' resulting from hydrothermal fluid deposition in tectonic crustal fissures.
Authentication Indicators
Sectility (gold will cut/dent rather than shatter like pyrite), deep yellow color under low light, lack of crystal striations typical of 'Fool's gold' (pyrite).
Origin & Maker
Naturally occurring mineral; likely sourced from a hard-rock mining district (e.g., California Mother Lode, Klondike, or Australian gold fields).
Era & Period
Geological Formation (likely millions of years old); contemporary discovery.
Age Estimate
Formation age: Pre-Cambrian to Cenozoic depending on the deposit; Discovery age: Recent.
Cultural Significance
Represents the primary source of wealth for civilizations throughout history; symbolic of the 'Gold Rush' eras and the foundation of the global monetary gold standard.
Condition Notes
Raw geological state. The specimen appears freshly fractured or minimally processed. Grade: High-grade ore specimen for collectors.
Value Estimate
Spot price value is low due to extraction costs, however, as a 'Display Specimen,' it may command $200-$500 USD depending on the rarity of the locale and the 'eye appeal' of the visible gold.
Care & Maintenance
Keep dry to prevent sulfide oxidation (which can lead to 'rock rot'). Clean only with soft brush and distilled water; avoid harsh chemicals that may dissolve the matrix minerals.
Similar Items
Pyrite (Iron Sulfide), Chalcopyrite (Copper Iron Sulfide), Mica. Gold is distinguished by its softness, weight, and failure to tarnish.
Interesting Facts
Most gold is mined from microscopic particles; finding 'visible gold' specimens like this is rare and highly desirable for mineral collectors who pay premiums over the melt value.