sedimentary
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Hardness: 6-7 on Mohs scale; Color: tan, yellow, or buff; Luster: matte/dull; Structure: clastic texture with visible sand-sized grains; Cleavage: none; Specific Gravity: 2.2-2.8.
- Hardness
- 6-7 on Mohs scale
- Color
- tan, yellow, or buff
- Luster
- matte/dull
Identified More sedimentary →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 on Mohs scale; Color: tan, yellow, or buff; Luster: matte/dull; Structure: clastic texture with visible sand-sized grains; Cleavage: none; Specific Gravity: 2.2-2.8.
Formation & geological history
Formed through the accumulation and cementation of mineral particles or rock fragments, typically sand. Most commonly formed in ancient river beds, beaches, or desert environments over millions of years (dates vary by specific location).
Uses & applications
Extensively used in construction as a building material, decorative stone for landscaping, and in the production of glass (if high quartz purity). It is also a significant reservoir rock for oil and groundwater.
Geological facts
Sandstone is one of the most common sedimentary rocks on Earth. The famous red rock formations of the American Southwest and the ancient city of Petra are both primarily composed of sandstone.
Field identification & locations
Identify in the field by its 'gritty' feel (like sandpaper) and visible bedding layers. It is found globally in sedimentary basins. Collectors often look for examples with interesting fossil inclusions or 'desert rose' formations.
More like this
Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Shale or Slaty Mudstone
Argillaceous sedimentary rock
sedimentary
Chert Breccia
Brecciated Chert (Microcrystalline Silica)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2)
sedimentary
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
sedimentary