mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Hardness: 7 (Mohs scale); Color: White to orange-brown (due to iron staining); Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65.

Hardness: 7 (Mohs scale)
Color: White to orange-brown (due to iron staining)
Luster: Vitreous to greasy

Identified April 7, 2026More mineral →

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Physical properties

Formation & geological history

Formed in hydrothermal veins or as a secondary mineral where silica-rich fluids cool and crystallize. The orange/brown tint comes from hematite or goethite staining during or after primary formation.

Uses & applications

Primarily used as decorative stone, landscape aggregate, or in metaphysical practices. High-purity quartz is used in glass and electronics, but stained varieties are mostly for collection.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Iron-stained quartz like this is often nicknamed 'Iron Quartz' or 'Golden Healer' in commercial trade.

Field identification & locations

Identify by its ability to scratch glass (hardness 7), lack of cleavage, and translucent appearance. It is commonly found in gravel pits, riverbeds, and near old mining sites.

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