metamorphic
Pink quartzite or pink quartz pebble
Quartzite; predominantly silicon dioxide (SiO₂), with iron-bearing impurities or feldspar causing the pink color
AI-generated identification · may be incorrectHardness about 7 Mohs; salmon-pink to reddish, opaque to slightly translucent, with a glassy-to-waxy luster and no obvious cleavage. The rounded, smooth surface indicates tumbling or water abrasion; specific gravity is roughly 2.6–2.7.
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Physical properties
Hardness about 7 Mohs; salmon-pink to reddish, opaque to slightly translucent, with a glassy-to-waxy luster and no obvious cleavage. The rounded, smooth surface indicates tumbling or water abrasion; specific gravity is roughly 2.6–2.7.
Formation & geological history
Likely derived from quartz-rich sandstone metamorphosed under heat and pressure, generally during Precambrian to younger mountain-building events; alternatively, it may be a massive pink quartz pebble. Common in river gravels and glacial deposits.
Uses & applications
Used as decorative stone, landscaping gravel, lapidary material, and occasionally countertops or tile; attractive pieces are sold as polished or tumbled specimens.
Geological facts
Quartzite commonly breaks across grains rather than around them and can scratch ordinary glass. Pink coloration typically reflects iron oxides, hematite, or potassium-feldspar inclusions.
Field identification & locations
Identify by its very high hardness, granular quartz texture, and resistance to acid; quartzite usually feels dense and does not show strong cleavage. Common sources include Brazil, India, Madagascar, the United States, and Canadian shield regions.
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