metamorphic
Banded Quartzite
Metamorphic Quartz Arenite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, varying colors of tan and grey with visible banding, vitreous luster, and a dense, granular crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, varying colors of tan and grey with visible banding, vitreous luster, and a dense, granular crystal structure.
Formation & geological history
Formed through the intense heat and pressure metamorphism of quartz-rich sandstone over millions of years.
Uses & applications
Used primarily in decorative landscaping, construction aggregate, and occasionally as a tumbling stone for lapidary arts.
Geological facts
Quartzite is exceptionally resistant to weathering and erosion, which explains why ancient river pebbles of this rock remain so smooth and rounded.
Field identification & locations
Easily identified by its extreme hardness (scratches glass) and distinctive compositional banding; commonly found in ancient mountain belts and riverbeds worldwide.
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