mineral

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))

Hardness: 7 (Mohs scale); Color: White/clear base with orange, brown, or rusty coatings; Luster: Vitreous to dull; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65.

Hardness: 7 (Mohs scale)
Color: White/clear base with orange, brown, or rusty coatings
Luster: Vitreous to dull

Identified May 10, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins or pegmatites where silica-rich fluids cool. The orange staining occurs due to later exposure to iron-rich groundwater or the weathering of nearby sulfide minerals like pyrite.

Uses & applications

Common quartz is used widely in glass making, electronics, and as an abrasive. Stained specimens are primarily sold as decorative landscape rock or entry-level mineral specimens for collectors.

Geological facts

The orange color is often skin-deep; if the rock is broken, the interior is usually milky white or crystal clear. This staining is often referred to by collectors as 'Golden Healer' in metaphysical circles.

Field identification & locations

Look for its high hardness (it will scratch glass) and characteristic conchoidal fracture. Found worldwide, especially in areas with significant soil oxidation or near iron ore deposits.

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Mineral

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