sedimentary
Sandstone (Flagstone)
Arenite (predominantly SiO2)
AI-generated identification · may be incorrectHardness 6-7 on the Mohs scale, gritty texture, earthy luster, porous, and displays greyish-buff coloration.
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Physical properties
Hardness 6-7 on the Mohs scale, gritty texture, earthy luster, porous, and displays greyish-buff coloration.
Formation & geological history
Formed through the compaction and cementation of mineral particles and quartz sand grains in ancient riverbed, beach, or desert environments.
Uses & applications
Extensively quarried for architectural paving, landscaping, building facades, and patio pavers.
Geological facts
Sandstone flags naturally split along bedding planes into flat, broad slabs ideal for walkways.
Field identification & locations
Identifiable by its gritty sandpaper feel, fine-to-medium visible quartz grains, and flat-splitting tendency. Widespread globally in sedimentary basins.
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