mineral

Quartz with Hematite Inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Hardness: 7 on Mohs scale; Color: Milky white to off-white base with reddish-brown vein-like hematite inclusions; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: ~2.65

Hardness: 7 on Mohs scale
Luster: Vitreous to greasy

Identified July 23, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes where silica-rich fluids crystallized into quartz within rock fractures. Fluid movement introduced iron-rich solutions, precipitating hematite along micro-fractures within the quartz structure.

Uses & applications

Used primarily for lapidary work, tumbling, decorative stones, cabochons, and as educational or amateur collector specimens.

Geological facts

The reddish spiderweb-like patterns are caused by iron oxide (hematite) filling tiny fractures or micro-fissures within the quartz matrix. Quartz is one of the most abundant minerals in the Earth's continental crust.

Field identification & locations

Identified in the field by its hardness (scratches steel/glass easily), milky quartz base, lack of cleavage, and distinct reddish hematite veining. Frequently found in gravel beds, stream deposits, and hydrothermal vein regions worldwide.

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