sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
AI-generated identification · may be incorrectHardness: 6-7 (individual quartz grains), Color: Tan to reddish-brown, Luster: Dull/Earthy, Crystal Structure: Granular/Clastic, Specific Gravity: 2.2-2.8
Identified More sedimentary →
Explore Sandstone (with Iron Staining) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 (individual quartz grains), Color: Tan to reddish-brown, Luster: Dull/Earthy, Crystal Structure: Granular/Clastic, Specific Gravity: 2.2-2.8
Formation & geological history
Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments. The brownish tint suggests the presence of iron oxides like hematite or limonite. Found in various geological ages globally.
Uses & applications
Commonly used in construction, paving, and as a decorative stone. High-quality sandstone is used for gritstone in grinding.
Geological facts
Sandstone is one of the most common sedimentary rocks on Earth and makes up about 20% of all sedimentary rocks in the crust.
Field identification & locations
Identify by its gritty, sand-like texture and visible grains. Often found in riverbeds, deserts, or coastal areas. This small specimen is a common field find.
More like this
Other sedimentary specimens
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary