metamorphic

Pink-and-white quartzite

Quartzite, predominantly crystalline SiO₂ with iron-oxide staining and possible feldspar/mica

AI-generated identification · may be incorrect

Hardness about 7 Mohs; massive, granular texture; white to salmon-pink coloration, vitreous to sugary luster, and no obvious cleavage. The pink-red zones likely reflect hematite or other iron oxides.

Identified September 6, 2026More metamorphic →

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Physical properties

Hardness about 7 Mohs; massive, granular texture; white to salmon-pink coloration, vitreous to sugary luster, and no obvious cleavage. The pink-red zones likely reflect hematite or other iron oxides.

Formation & geological history

Formed when quartz-rich sandstone was deeply buried and recrystallized during metamorphism; individual specimens may range from Precambrian to younger geological ages. Common in metamorphic belts and resistant stream or glacial gravels.

Uses & applications

Used as crushed stone, aggregate, riprap, landscaping rock, and occasionally as a decorative building or lapidary stone. Attractive pieces may be polished for cabochons or ornaments.

Geological facts

Quartzite is typically harder and more resistant than its sandstone precursor, producing durable boulders and ridges. Pink coloration can also result from iron-bearing impurities rather than a distinct mineral species.

Field identification & locations

Identify it by its quartz-like hardness, fused sugary texture, lack of visible sand grains, and inability to scratch it with a steel knife; quartz crystals may scratch it. Common sources include mountain belts and glacial deposits worldwide.