metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to pinkish color, vitreous to greasy luster, non-foliated massive crystal structure, specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, white to pinkish color, vitreous to greasy luster, non-foliated massive crystal structure, specific gravity around 2.65.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, typically occurring in mountain-building belts.
Uses & applications
Used in construction, as a decorative stone, for road surfacing, and in the manufacturing of refractory bricks and silica.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Identified by its inability to be scratched by steel and its granular, sugary texture; commonly found worldwide in ancient orogenic zones.
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