mineral

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2)

Mohs hardness 2.5-3 for gold, 7 for quartz matrix; bright metallic golden-yellow color with white/gray quartz; metallic to vitreous luster; cubic crystal system for gold, trigonal for quartz; no cleavage; high specific gravity (19.3 for pure gold).

Identified July 26, 2026More mineral →

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Physical properties

Formation & geological history

Hydrothermal vein deposits where hot mineral-rich solutions precipitate gold and quartz into fractures in host rocks under high pressure and temperature.

Uses & applications

Used in jewelry, financial reserves, electronics, aerospace components, dentistry, and highly sought after by mineral specimen collectors.

Geological facts

Native gold specimen in matrix is often worth significantly more than its melt value due to specimen rarity and aesthetic distribution within quartz. Gold is one of the least reactive chemical elements and does not tarnish or corrode.

Field identification & locations

Identified by its rich golden metallic shine, softness (malleable, does not shatter when struck), high density, and association with milky or vein quartz. Major sources include Australia, California (USA), South Africa, and Canada.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Septarian Pebble

Septarian nodule / Concretion

sedimentary

Sandstone with Mineral Veining or Crust

Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)

sedimentary

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

mineral

Gypsum (variety Selenite or Alabaster)

Calcium sulfate dihydrate (CaSO4·2H2O)

Mineral