metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white to gray or pink, vitreous to greasy luster, non-foliated crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, typically white to gray or pink, vitreous to greasy luster, non-foliated crystal structure.
Formation & geological history
Formed through the metamorphism of quartz sandstone under high heat and pressure, typically during mountain-building events.
Uses & applications
Used in construction, railway ballast, manufacturing of silica brick, and decorative landscaping or countertops.
Geological facts
Quartzite is exceptionally durable and weather-resistant, often forming prominent ridges and mountain peaks.
Field identification & locations
Identify by its hardness (scratches glass) and lack of reactivity to acid; found worldwide in ancient mountain belts.
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