Natural Gold-Bearing Ore/Raw Native Gold in Matrix
Raw Gold (nugget, dust, or flake in quartz/sulfide matrix) · Natural Yellow Gold occurring in a multifaceted crystal/granular habit within an earthy, metallic sulfide or quartz matrix.
Purity: Likely 20K-22K (83%-92%) pure native gold, though typical for natural specimens before refining. The surrounding matrix is non-gold material (0% purity).
Type
Raw Gold (nugget, dust, or flake in quartz/sulfide matrix)
Purity
Likely 20K-22K (83%-92%) pure native gold, though typical for natural specimens before refining. The surrounding matrix is non-gold material (0% purity).
Gold Type
Natural Yellow Gold occurring in a multifaceted crystal/granular habit within an earthy, metallic sulfide or quartz matrix.
Weight
Indeterminate from image; specific gravity testing required to distinguish gold weight from host rock weight.
Description
This specimen features native gold grains embedded in a dark, weathered matrix. The gold exhibits the characteristic hackly fracture and rich butter-yellow hue of high-purity natural gold. The surrounding material shows signs of oxidation and mineralization, typical of 'free-milling' ore where gold is trapped in rock rather than as a loose nugget.
Key Features
Crystalline structure of gold, high-contrast matrix, lack of symmetry, and specific 'greasy' metallic luster characteristic of real gold vs. pyrite.
Color & Finish
Vivid brassy-yellow metallic luster for the gold; grayish-black and iridescent tarnish on the surrounding host minerals (likely iron sulfides/pyrite).
Hallmarks & Stamps
None. As a raw geological specimen, it lacks man-made stamps. Only natural crystalline structures are visible.
Dimensions Estimate
Macros-photograph suggests a specimen in the 1cm to 3cm range (small cabinet or thumbnail size).
Gemstones & Inlays
No gemstones; however, the host rock appears to contain micro-crystalline quartz and potentially iron ore or sulfides (pyrite/chalcopyrite).
Clasp & Closure
Not applicable (raw mineral specimen).
Chain & Links
Not applicable (raw mineral specimen).
Craftsmanship Details
N/A - This is a product of natural geological heat and pressure (Hydrothermal deposition).
Authentication Indicators
Sectility (gold can be cut/deformed without shattering), rich color even in low light, and lack of 'fool's gold' striations. Red flag: If the yellow material is brittle or smells of sulfur when struck, it is likely Pyrite.
Origin & Maker
Naturally occurring; common in orogenic gold deposits (e.g., California, Australia, Alaska, or West Africa).
Era & Period
Geological/Prehistoric formation (likely millions of years old).
Age Estimate
Millions of years (Paleozoic to Cenozoic depending on the specific mining district).
Cultural Significance
Represents the 'Gold Rush' eras of history where miners sought 'lode gold' deposits directly from the earth's crust.
Condition Notes
Raw/Unprocessed. The surface displays natural weathering and rough fractures from extraction. Grade: Collectible Mineral Specimen.
Value Estimate
Valued primarily as a mineral specimen. If the gold is significant, it holds a premium for collectors over the basic 'spot' price of the metal content.
Care & Maintenance
Do not clean with harsh chemicals. Use only mild soap and water. Keep in a stable, dry environment to prevent the 'rusting' of the iron-heavy host rock.
Similar Items
Iron Pyrite (Fool's Gold), Chalcopyrite, and Mica. These are often mistaken for gold but are brittle or have different crystalline habits.
Interesting Facts
Most of the world's gold is found in tiny particles like these, and it often takes crushing tons of this rock to extract just a few grams of pure gold.