sedimentary
Sandstone (specifically Banded Sandstone)
Clastic sedimentary rock (primarily SiO2)
Hardness: 6-7 on Mohs scale; Color: Tan, reddish-pink, or light brown with distinct banding; Luster: Dull/Earthy; Crystal structure: Clastic (grainy); Cleavage: None; Specific Gravity: 2.2–2.8.
- Hardness
- 6-7 on Mohs scale
- Color
- Tan, reddish-pink, or light brown with distinct banding
- 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 on Mohs scale; Color: Tan, reddish-pink, or light brown with distinct banding; Luster: Dull/Earthy; Crystal structure: Clastic (grainy); Cleavage: None; Specific Gravity: 2.2–2.8.
Formation & geological history
Formed from the accumulation and cementation of mineral particles or rock fragments, typically sand-sized quartz. The banding (Liesegang rings) often results from the precipitation of iron oxides and hydroxides from groundwater flowing through the porous rock.
Uses & applications
Commonly used as a building material, for paving, in decorative masonry, and as a popular specimen for collectors due to its aesthetic banding.
Geological facts
Sandstone makes up about 20-25% of all sedimentary rocks on Earth. Banded sandstone is often marketed under names like 'Picture Sandstone' or 'Landscape Stone' when the patterns resemble natural scenery.
Field identification & locations
Identify in the field by its sand-like texture (feels gritty like sandpaper) and visible layering or rhythmic banding. Common in arid environments and ancient riverbeds.
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