sedimentary
Sandstone (Cut Dimension Stone)
Arenite / Quartzose Sandstone (primarily SiO2)
AI-generated identification · may be incorrectMohs hardness 6-7, dull/earthy luster, fine-to-medium granular clastic texture, typically light buff to beige in color.
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Physical properties
Mohs hardness 6-7, dull/earthy luster, fine-to-medium granular clastic texture, typically light buff to beige in color.
Formation & geological history
Formed by the compaction and cementation of mineral particles (predominantly quartz) in ancient marine, fluvial, or desert environments.
Uses & applications
Widely used as building material, paving stones, dimension stone for architecture, and sharpening whetstones.
Geological facts
Sandstone accounts for roughly 20-25% of all sedimentary rocks and is frequently used historically to carve famous monuments like Petra.
Field identification & locations
Identified by gritty texture resembling sandpaper and visible granular sand grains; found extensively in sedimentary basins worldwide.
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Other sedimentary specimens
Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary