metamorphic
Pink quartzite or rose quartz rough fragment
Quartzite; predominantly silicon dioxide (SiO₂), possibly colored by trace iron or inclusions
AI-generated identification · may be incorrectPale salmon-pink, massive, matte-to-waxy surface with irregular fracture and no obvious cleavage; quartz hardness Mohs 7, vitreous luster when freshly broken, specific gravity about 2.65. The photograph alone cannot reliably distinguish quartzite from massive rose quartz.
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Physical properties
Pale salmon-pink, massive, matte-to-waxy surface with irregular fracture and no obvious cleavage; quartz hardness Mohs 7, vitreous luster when freshly broken, specific gravity about 2.65. The photograph alone cannot reliably distinguish quartzite from massive rose quartz.
Formation & geological history
Quartzite forms when quartz-rich sandstone is recrystallized during metamorphism, generally during mountain-building; rose quartz forms in silica-rich igneous or hydrothermal environments. Exact age and locality cannot be determined from the image.
Uses & applications
Quartzite is used as durable construction aggregate, paving, and decorative stone; attractive pink material is sold as a lapidary or display specimen. Rose quartz is commonly cut for beads, cabochons, carvings, and inexpensive jewelry.
Geological facts
Quartz-rich rocks commonly leave a white streak and can scratch ordinary glass. Pink coloration may result from microscopic iron-bearing inclusions, feldspar, or other impurities rather than the quartz itself.
Field identification & locations
Look for granular interlocking quartz, uniform hardness, and lack of cleavage; a glass-scratch test and acid test are useful, though laboratory testing is needed for certainty. Common sources include Brazil, Madagascar, India, and the United States.
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