mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Hardness: 7 (Mohs scale); Color: Pinkish-orange to rusty red; Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Pinkish-orange to rusty red
Luster: Vitreous to greasy

Identified June 19, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Pinkish-orange to rusty red; Luster: Vitreous to greasy; Crystal Structure: Hexagonal; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed from cooling magma or hydrothermal veins. The reddish-tan coloration is due to the presence of secondary iron oxide (rust) coating the surfaces or internal fractures of the quartz.

Uses & applications

Mainly for collection, lapidary use for tumbling, and occasionally as a source of high-purity silica for glassmaking or electronics if refined.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Iron-stained versions are often colloquially called 'Ferruginous Quartz' or 'Healer's Gold' in metaphysical circles.

Field identification & locations

Identify in the field by its hardness (it will scratch glass) and lack of cleavage. Look for the reddish staining in riverbeds, mountain outcrops, and mining tailings.

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