sedimentary
Banded sandstone
Quartz-rich sandstone (quartz arenite or feldspathic sandstone; exact type cannot be determined from the image)
AI-generated identification · may be incorrectFine-grained, tan to reddish-brown with parallel pale bands and a matte surface. Sandstone is typically Mohs 6–7 where quartz-rich; individual grains are too small to assess here.
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Physical properties
Fine-grained, tan to reddish-brown with parallel pale bands and a matte surface. Sandstone is typically Mohs 6–7 where quartz-rich; individual grains are too small to assess here.
Formation & geological history
Formed as sand accumulated in layers and was compacted and cemented, with iron oxides likely contributing the reddish color. Its age and depositional environment cannot be determined from the image.
Uses & applications
Commonly used for building stone, paving, and landscaping; this small piece is mainly decorative or a collection specimen.
Geological facts
The visible stripes are sedimentary layering, likely reflecting changes in grain size or mineral content.
Field identification & locations
Look for sand-sized grains and layered texture; common in sedimentary basins worldwide. This appears to be a small, possibly smoothed fragment.
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