Auriferous Quartz and Sulfide Ore Samples
Raw Gold Ore (Lode Gold) · Native Gold inclusions in Matrix
Purity: Variable Fineness; likely 0.001% to 0.1% overall by weight
Type
Raw Gold Ore (Lode Gold)
Purity
Variable Fineness; likely 0.001% to 0.1% overall by weight
Gold Type
Native Gold inclusions in Matrix
Weight
Large specimen approx. 80-120g; Small specimen approx. 25-40g
Description
These specimens represent raw gold-bearing ore. The larger piece displays a dark, sulfide-rich matrix with significant iron oxide staining, suggestive of high-mineralization zones. The smaller piece appears more silicates-heavy (quartz-based) with visible granular textures consistent with lode gold deposits where gold is held within the lattice of host minerals.
Key Features
Presence of iron Gossan (rust colors), heavy sulfide mineralization, and unrefined 'raw' surface texture.
Color & Finish
Dull black to charcoal gray mineralization with earthy reddish-brown iron oxide patina and glassy quartz lustres
Hallmarks & Stamps
None (Natural Geological Specimens)
Dimensions Estimate
Large: 60mm x 45mm; Small: 35mm x 25mm
Gemstones & Inlays
Possible visible micro-crystalline native gold; associated with Pyrite, Arsenopyrite, or Chalcopyrite
Clasp & Closure
Not Applicable (Raw Mineral)
Chain & Links
Not Applicable (Irregular Geological Structure)
Craftsmanship Details
Natural geological formation; no human craftsmanship; showcases 'raw' mineral aesthetics.
Authentication Indicators
Irregular crystalline growth, non-uniform color, specific gravity higher than standard rock but lower than pure gold.
Origin & Maker
Natural Geological Deposit (likely eluvial or primary lode)
Era & Period
Geological (Pre-human extraction)
Age Estimate
Millions of years (Formation); Recently excavated (Recovery)
Cultural Significance
Represents the primary source of wealth and the starting point of the global gold supply chain.
Condition Notes
Raw/Unprocessed; dusty surface with minor crumbling on edges; natural weathered state.
Value Estimate
Primarily specimen/educational value ($10-$50 USD) unless assay proves high gold-per-ton ratio.
Care & Maintenance
Keep dry; avoid chemical cleaning; handle with gloves to prevent oil transfer; store in a padded mineral box.
Similar Items
Iron Pyrite (Fool's Gold), Copper Ore, Hematite, and Magnetite specimens.
Interesting Facts
Most gold is mined from ore like this where the metal is invisible to the naked eye, requiring crushing and chemical leaching to extract.