mineral

Copper and Quartz beads

Native Copper (Cu) and Crystalline Quartz (SiO2)

Native Copper: Mohs 2.5-3, reddish-orange metallic, isometric. Quartz: Mohs 7, transparent to white, vitreous luster, hexagonal crystal system.

Identified June 16, 2026More mineral →

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Physical properties

Native Copper: Mohs 2.5-3, reddish-orange metallic, isometric. Quartz: Mohs 7, transparent to white, vitreous luster, hexagonal crystal system.

Formation & geological history

Native copper forms in the cavities of basaltic lavas or through oxidation of copper sulfide deposits. Quartz forms in igneous, metamorphic, and sedimentary environments from silica-rich hydrothermal fluids.

Uses & applications

The specimens pictured are used in jewelry making. Copper is also vital for electrical wiring, while quartz is used in optics and electronics.

Geological facts

Copper was the first metal ever manipulated by humans. Quartz is the most abundant mineral found at Earth's surface.

Field identification & locations

Identify copper by its high density and malleability; quartz by its hardness (scratches glass) and lack of cleavage. Found globally in hydrothermal veins.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral