metamorphic
Quartz-veined Quartzite
Metamorphic quartz arenite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, grayish-white color with visible veining, vitreous luster, and a non-foliated granular crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, grayish-white color with visible veining, vitreous luster, and a non-foliated granular crystal structure.
Formation & geological history
Formed through the regional metamorphism of quartz-rich sandstone under high heat and pressure, often occurring during mountain-building events.
Uses & applications
Used in construction as crushed stone, dimension stone, and aggregate, as well as in manufacturing silica refractory bricks.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, which is why ridges formed of quartzite often survive as prominent hills.
Field identification & locations
Identified in the field by its hardness (scratches glass), lack of reaction to acid, and sugary textured fractured surfaces; found worldwide in ancient orogenic belts.
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