metamorphic
Polished pink quartzite (likely with chlorite inclusions)
Quartzite; predominantly quartz (SiO₂), with minor chlorite or amphibole inclusions
AI-generated identification · may be incorrectMohs hardness 7; pale pink, opaque to slightly translucent, with a sugary granular texture and local green-black inclusions. Vitreous to slightly dull luster; quartz grains lack cleavage and show uneven fracture; specific gravity about 2.65.
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Physical properties
Mohs hardness 7; pale pink, opaque to slightly translucent, with a sugary granular texture and local green-black inclusions. Vitreous to slightly dull luster; quartz grains lack cleavage and show uneven fracture; specific gravity about 2.65.
Formation & geological history
Formed when quartz-rich sandstone was metamorphosed and recrystallized under heat and pressure, commonly during Precambrian or Paleozoic mountain-building. The green inclusions likely record minor metamorphic alteration or accessory minerals.
Uses & applications
Used as a decorative tumbled stone, cabochon, aggregate, and dimension stone; attractive pieces may be used in jewelry and crafts. This small polished specimen has modest commercial value.
Geological facts
The pink color may result from iron-bearing impurities, feldspar, or finely dispersed hematite rather than quartz itself. Green patches are not diagnostic and could represent chlorite, epidote, or another accessory mineral.
Field identification & locations
Identify by its very hard, quartz-rich body that scratches glass and has no obvious cleavage; a streak test is white. Common sources include Brazil, India, Madagascar, and quartzite formations worldwide; exact identification would require microscopy or elemental analysis.
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