Auriferous Quartz Specimen (Possible Gold-Bearing Ore)
Raw Gold Ore (Lode Gold in Matrix) · Native Gold in Quartz Matrix; natural yellow gold color often associated with iron staining (limonite).
Purity: Geological variable; native gold in quartz is typically 20K to 24K (83% to 99.9% fineness) before processing.
Type
Raw Gold Ore (Lode Gold in Matrix)
Purity
Geological variable; native gold in quartz is typically 20K to 24K (83% to 99.9% fineness) before processing.
Gold Type
Native Gold in Quartz Matrix; natural yellow gold color often associated with iron staining (limonite).
Weight
Undetermined; dependent on the specific gravity of the host rock versus the metallic inclusions.
Description
A rugged specimen of auriferous quartz showing distinct metallic yellow flecks and stringers embedded in a crystalline matrix. The rock exhibits significant oxidation, indicating it may have been harvested near a surface outcrop. It serves as a prime example of 'lode gold' before it is eroded into alluvial nuggets.
Key Features
Heterogeneous distribution of metallic yellow material within quartz; presence of iron oxide (rust) which is a common geological indicator of gold mineralization.
Color & Finish
Vivid buttery yellow metallic inclusions within semi-translucent milky to smoky quartz; heavy iron-oxide staining (brown/red rust colors).
Hallmarks & Stamps
None; natural geological specimens do not feature man-made stamps or hallmarks.
Dimensions Estimate
Visual estimate of 5-10cm specimen based on the photographic scale of the monitor screen.
Gemstones & Inlays
Substantial quartz (SiO2) matrix with secondary iron oxides; the 'gold' acts as a natural metallic inclusion.
Clasp & Closure
Not applicable; raw mineral specimen.
Chain & Links
Not applicable; raw mineral specimen with crystalline and conchoidal fracture patterns.
Craftsmanship Details
Natural geological formation; crystalline structure created via hydrothermal precipitation in tectonic fissures.
Authentication Indicators
Visual assessment suggests many indicators of iron-stained quartz or mica (Pyrite/Chalcopyrite) rather than solid gold; requires a streak test or 'Mitey' gold test for confirmation.
Origin & Maker
Naturally occurring; common in hydrothermal vein deposits (e.g., California Mother Lode, Witwatersrand, or Australian goldfields).
Era & Period
Modern Discovery; geological formation likely dates back millions of years (Archean to Cenozoic depending on locality).
Age Estimate
Geological age varies by deposit; likely extracted in the contemporary era for mineral collection.
Cultural Significance
Represents the primary source of wealth and the catalyst for historical Gold Rushes in the 19th century.
Condition Notes
Fair to Good; shows rough extraction fractures and heavy surface staining. Luster is somewhat obscured by mineral debris.
Value Estimate
Specimen value; likely ranges from $20 to $200 depending on actual gold content versus aesthetic mineral appeal.
Care & Maintenance
Clean with mild detergent and water; avoid harsh acids that could dissolve certain matrix minerals; store on a padded display stand.
Similar Items
Pyrite (Fool's Gold), Chalcopyrite, or Mica-heavy schist; differentiated by gold's malleability and sectility.
Interesting Facts
Over 90% of the world's gold has been mined from lode deposits like this quartz vein structure.