mineral

Included quartz (likely iron-oxide-bearing quartz)

Quartz, silicon dioxide (SiO₂), with limonite/goethite inclusions

AI-generated identification · may be incorrect

Transparent to translucent, colorless quartz with a brown-orange earthy inclusion; vitreous luster, conchoidal fracture, no cleavage, Mohs hardness 7, and specific gravity about 2.65. The rounded shape appears tumbled or naturally water-worn.

Identified August 10, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallized from silica-rich hydrothermal fluids or grew in cavities, while iron oxides/hydroxides formed later or were trapped during growth; exact age and locality cannot be determined from the image. Common host settings include veins, cavities, and weathered veins.

Uses & applications

Used primarily as a collector or cabochon/tumbled stone; quartz is widely used in glass, electronics, abrasives, and construction aggregate.

Geological facts

The rusty inclusion is probably limonite or goethite rather than a separate crystal; iron staining commonly produces golden-brown, red, or orange inclusions in quartz.

Field identification & locations

Identify by its glassy transparency, hardness, conchoidal fracture, and inability to scratch with a steel knife; iron-rich inclusions distinguish it from clear quartz. Common worldwide, especially in hydrothermal quartz veins.