sedimentary
Sandstone (Weathered / Crushed)
Quartz Sandstone
Hardness of 7 on the Mohs scale due to quartz grain composition; red, brown, and tan coloration caused by iron oxide staining; dull to vitreous luster; granular crystal structure; lacks distinct cleavage.
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Physical properties
Hardness of 7 on the Mohs scale due to quartz grain composition; red, brown, and tan coloration caused by iron oxide staining; dull to vitreous luster; granular crystal structure; lacks distinct cleavage.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, in ancient environments such as deserts, rivers, or beaches.
Uses & applications
Used primarily in construction, aggregate, landscaping, and glass manufacturing.
Geological facts
Sandstone is one of the most common sedimentary rocks on Earth and often preserves ancient ripple marks and fossilized tracks.
Field identification & locations
Easily identifiable in the field by its gritty texture and visible quartz grains; widely distributed globally.
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Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
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Quartz pebble
Silicon dioxide (SiO2)
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Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
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Banded Siltstone / Mudstone Pebble
Siltstone / Argillite
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Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary