mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Clear to white with reddish-brown staining; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Clear to white with reddish-brown staining
Luster: Vitreous (glassy)

Identified July 13, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Clear to white with reddish-brown staining; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Formation & geological history

Formed from silica-rich hydrothermal fluids cooling in rock veins. The orange-brown coloration is due to the oxidation of iron minerals (hematite or limonite) that have coated or permeated the surface of the quartz crystalline structure.

Uses & applications

Mainly used as a decorative specimen for collectors or as a source of quartz for industrial glass making if high purity. Generally lacks gemstone quality but holds educational value.

Geological facts

Quartz is the most abundant mineral in the Earth's continental crust. Iron-stained quartz is often called 'ferruginous quartz' or 'golden healer' in metaphysical circles.

Field identification & locations

Identified by its ability to scratch glass, its glassy luster, and the characteristic rusty-red staining. Common in varying geological environments worldwide, especially in mountain ranges and near riverbeds.