sedimentary

Quartz Veined Quartzite or Sandstone

Quartzite with Quartz Veins (SiO2)

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.

Other sedimentary specimens

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Sandstone or Siltstone

Arenite (if sandstone)

Sedimentary

Fossiliferous Concretion

Septarian Concretion containing Brachiopods/Crinoids

fossil

Quartz pebble

Silicon dioxide (SiO2)

sedimentary

Sedimentary Sandstone

Arenite (Sedimentary Rock)

sedimentary

Generic Pebble / Rock Fragment

Lithic fragment / Weathered rock

sedimentary

Banded Siltstone / Mudstone Pebble

Siltstone / Argillite

sedimentary