metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, typically pink, white, or gray with a vitreous to greasy luster and a non-foliated, granular crystal structure.
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Physical properties
Hardness of 7 on Mohs scale, typically pink, white, or gray with a vitreous to greasy luster and a non-foliated, granular crystal structure.
Formation & geological history
Formed from quartz-rich sandstone or chert subjected to intense heat and tectonic pressure over millions of years.
Uses & applications
Used extensively in construction, road surfacing, dimension stone, and occasionally for decorative carvings.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Can be identified by its inability to be scratched by steel and lack of effervescence with acid; found worldwide in ancient mountain belts.
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