In-situ Auriferous Quartz Vein (Natural Raw Gold Ore)
Raw Gold Ore (Lode Deposit) · Natural Yellow Gold in Quartz
Purity: Geological Native Gold (Typically 80-95% pure/20K-22K locally)
Type
Raw Gold Ore (Lode Deposit)
Purity
Geological Native Gold (Typically 80-95% pure/20K-22K locally)
Gold Type
Natural Yellow Gold in Quartz
Weight
Undetermined; bulk ore mass requires crushing and assay
Description
This is a classic hydrothermal quartz vein showing visible mineralization within a dark, basaltic or slatey host rock. The bright metallic inclusions suggest 'free gold' or auriferous sulfides. The texture is typical of lode gold deposits where silica-rich fluids cooled in rock fractures, depositing precious metals.
Key Features
Planar vein structure, milky quartz matrix, high-contrast metallic inclusions, and wet surface highlighting mineral luster.
Color & Finish
Brassy to buttery yellow metallic luster against milky white quartz and dark host rock
Hallmarks & Stamps
None (Natural geological occurrence)
Dimensions Estimate
Visible vein section spanning approximately 10-15 inches in outcrop
Gemstones & Inlays
Natural Quartz (Matrix) and Sulfide minerals (likely Pyrite or Chalcopyrite)
Clasp & Closure
Not applicable (Mineralized geological contact)
Chain & Links
Not applicable (Crystalline mineral structure)
Craftsmanship Details
Natural crystalline formation; sharp boundaries between quartz vein and surrounding country rock.
Authentication Indicators
Serrate/hackly fracture of metallic sections; lack of cleavage in yellow minerals; association with quartz; host rock alteration halos.
Origin & Maker
Natural geological formation (Hydrothermal deposition)
Era & Period
Geological (Likely Cenozoic to Precambrian depending on local mountain building)
Age Estimate
Millions of years (Formation age); recently exposed
Cultural Significance
Represents the 'Source' of all gold jewelry and currency; the primary target of historical gold rushes.
Condition Notes
Natural Raw/Unrefined; heavily weathered and wet surface. Subject to oxidation of associated iron-bearing minerals.
Value Estimate
Specimen value (aesthetic) vs. Assay value (gold content per ton); currently unquantified without destructive testing.
Care & Maintenance
Keep as a raw specimen or process via crushing, sluicing, and smelting; handle with care to avoid crumbling the friable vein.
Similar Items
Pyrite (Fool's Gold), Chalcopyrite (Peacock Ore), Mica (Schist flakes)
Interesting Facts
Most of the world's gold was originally delivered to the Earth's surface via these types of hydrothermal veins as hot, mineral-rich water cooled.