sedimentary
Sandstone (Quartzite texture)
Arenite (SiO2 secondary)
AI-generated identification · may be incorrectHardness: 6-7 Mohs; Color: Tan, beige, light brown; Luster: Dull/Earthly; Crystal Structure: Clastic grains visible; Cleavage: None; Specific Gravity: 2.3–2.4
- Hardness
- 6-7 Mohs
- Color
- Tan, beige, light brown
- Luster
- Dull/Earthly
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Physical properties
Hardness: 6-7 Mohs; Color: Tan, beige, light brown; Luster: Dull/Earthly; Crystal Structure: Clastic grains visible; Cleavage: None; Specific Gravity: 2.3–2.4
Formation & geological history
Formed through the accumulation of sand-sized mineral particles or rock fragments, subsequently lithified. This specific specimen has been smoothed and rounded by river or glaciofluvial transport.
Uses & applications
Commonly used as decorative landscaping stone (river rock), construction aggregate, and in architectural veneers.
Geological facts
Sandstone is one of the most common sedimentary rocks on Earth. The rounded shape indicates it has spent a significant amount of time in a high-energy water environment, such as a riverbed or shoreline.
Field identification & locations
Identify in the field by its sandpaper-like texture and visible sand grains. It is extremely common in garden beds and landscaping drainage areas.
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Sandstone or Siltstone
Arenite (if sandstone)
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Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
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Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary