mineral

Hematoid Quartz

Silicon Dioxide with Iron Oxide Inclusions (SiO2 + Fe2O3)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Translucent to opaque white/clear quartz with reddish-brown to orange iron staining; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None, exhibits conchoidal fracture.

Hardness: 7 on Mohs scale
Luster: Vitreous to greasy

Identified July 24, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal crystallization where quartz precipitates alongside iron-rich fluids. Iron oxides like hematite or goethite become trapped as inclusions inside or coating the quartz crystals.

Uses & applications

Used primarily in mineral collecting, lapidary arts for cabochons and tumbled stones, and in decorative items or metaphysical practices.

Geological facts

Also known as Ferruginous Quartz, Red Quartz, or Fire Quartz. The distinctive reddish-brown coloration is caused by trace amounts of iron oxide trapped within the quartz matrix or surface fractures.

Field identification & locations

Identified by its quartz-like hardness, lack of cleavage, translucent milky-to-clear base, and characteristic rust-red or reddish-brown iron staining inside fractures. Commonly found in riverbeds, pegmatites, and quartz veins worldwide.