sedimentary

Quartz Veined Quartzite or Sandstone

Quartzite with Quartz Veins (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on the Mohs scale. Color: Brownish-beige with lighter, off-white quartz veins. Luster: Vitreous to dull. Crystal structure: Microcrystalline quartz matrix with macrocrystalline quartz veins. Cleavage: None, fractures conchoidally. Specific gravity: 2.65.

Hardness: 7 on the Mohs scale
Color: Brownish-beige with lighter, off-white quartz veins
Luster: Vitreous to dull

Identified August 2, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the metamorphism of quartz-rich sandstone or through hydrothermal activity where silica-rich fluids filled fractures in pre-existing rock, later subjected to weathering and water transport to form a rounded pebble.

Uses & applications

Used in landscaping, decorative stone, gravel, and as a natural geological specimen for collectors.

Geological facts

The lighter lines running across the stone are quartz veins, which form when hot, mineral-rich fluids circulate through fractures in the rock and deposit crystalline quartz.

Field identification & locations

Easily identified in the field by its extreme hardness (scratches glass), lack of reaction to acid, and distinct contrasting veins. Commonly found in riverbeds and glacial tills.