Rock Identifier
Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic
metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, pink to reddish color, non-foliated texture, vitreous luster, specific gravity of 2.65.

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Physical properties

Hardness of 7 on Mohs scale, pink to reddish color, non-foliated texture, vitreous luster, specific gravity of 2.65.

Formation & geological history

Formed from quartz-rich sandstone subjected to intense heat and pressure during regional metamorphism.

Uses & applications

Used in construction, aggregate, railway ballast, and decorative landscaping.

Geological facts

Quartzite is extremely durable and resistant to chemical weathering, often outlasting the mountains it forms.

Field identification & locations

Identified by its inability to be scratched by steel and lack of fizzing with acid; common in riverbeds and glacial tills.