metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, colors range from white to pink or gray, vitreous to greasy luster, non-foliated massive crystal structure.
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Physical properties
Hardness of 7 on Mohs scale, colors range from white to pink or gray, vitreous to greasy luster, non-foliated massive crystal structure.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, typically over millions of years.
Uses & applications
Used in construction, as crushed stone for roads, manufacturing of silica bricks, and occasionally as decorative stone or countertops.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Identify by its hardness (scratches glass) and lack of effervescence with acid; commonly found worldwide in ancient mountain belts.
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