metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, colors range from white to gray or pink, vitreous to greasy luster, non-foliated massive crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, colors range from white to gray or pink, vitreous to greasy luster, non-foliated massive crystal structure.
Formation & geological history
Formed through the metamorphism of quartz sandstone under high heat and pressure, typically occurring in mountain-building belts.
Uses & applications
Used extensively in construction, as crushed stone for road bases, in masonry, and occasionally for decorative items.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent ridges and peaks in mountain ranges.
Field identification & locations
Identify by its hardness (scratches glass easily) and lack of reaction to acid; commonly found worldwide in ancient orogenic zones.
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