metamorphic
Quartzite
Metamorphic Quartzite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white to gray or pinkish, vitreous luster, non-foliated massive crystal structure, specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white to gray or pinkish, vitreous luster, non-foliated massive crystal structure, specific gravity around 2.65.
Formation & geological history
Formed from quartz-rich sandstone subjected to high heat and tectonic pressure during regional metamorphism.
Uses & applications
Extensively used in construction, dimension stone, decorative landscaping, and high-end kitchen countertops.
Geological facts
Quartzite is extremely durable and weather-resistant, often forming prominent mountain ridges because it resists erosion better than surrounding rocks.
Field identification & locations
Identified by its lack of reaction to hydrochloric acid and the way it fractures through quartz grains rather than around them; found globally in ancient mountain belts.
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