sedimentary
Sandstone
Sedimentary rock composed mainly of quartz sand
AI-generated identification · may be incorrectHardness 6-7 on Mohs scale; colors range from tan, brown, yellow, to red; dull luster; clastic texture with visible sand grains.
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Physical properties
Hardness 6-7 on Mohs scale; colors range from tan, brown, yellow, to red; dull luster; clastic texture with visible sand grains.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, river, or beach environments.
Uses & applications
Widely used in construction as a building material, paving stone, and for making glass.
Geological facts
Sandstone formations often preserve ancient ripple marks and fossils, providing key clues about past geological environments.
Field identification & locations
Easily identified by its grainy texture resembling sandpaper and visible layering; found globally in sedimentary basins.
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
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Sandstone or Siltstone
Arenite (if sandstone)
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Shale (or Mudstone/Siltstone)
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