sedimentary
Sandstone (specifically Lithic or Quartz Arenite)
Arenite (composed primarily of SiO2)
Hardness: 6-7 (Mohs scale); Color: tan, yellow, orange-brown due to iron oxide staining; Luster: dull/earthy; Crystal structure: granular clastic texture; Cleavage: none; Specific Gravity: 2.2-2.8
- Hardness
- 6-7 (Mohs scale)
- Color
- tan, yellow, orange-brown due to iron oxide staining
- Luster
- dull/earthy
Identified More sedimentary →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 (Mohs scale); Color: tan, yellow, orange-brown due to iron oxide staining; Luster: dull/earthy; Crystal structure: granular clastic texture; Cleavage: none; Specific Gravity: 2.2-2.8
Formation & geological history
Formed from the accumulation and lithification of sand-sized mineral grains or rock fragments. Typically deposited in river, desert, or marine environments over millions of years through compaction and cementation by minerals like silica or calcite.
Uses & applications
Commonly used as a building material, paving stone, in the manufacture of glass, and for decorative masonry. Ground sandstone is also used as an abrasive.
Geological facts
Sandstone makes up about 20-25% of all sedimentary rocks in the Earth's crust. It is a major reservoir for water (aquifers) and fossil fuels (oil and gas) due to its porosity.
Field identification & locations
Identify in the field by its distinctive 'sandpaper' feel and visible grains. Often occurs in layers (bedding). It can be found globally in river beds, canyons, and coastal cliffs.
More like this
Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Chert Breccia
Brecciated Chert (Microcrystalline Silica)
sedimentary
Sandstone Grain
Clastic Sedimentary Rock Grain (SiO2 dominated)
sedimentary
Shale or Slaty Mudstone
Argillaceous sedimentary rock
sedimentary
Sandstone
Arenite
sedimentary