sedimentary
Sandstone with Manganese Staining
Quartz Arenite / Sedimentary Rock
AI-generated identification · may be incorrectHardness of 6 to 7 on the Mohs scale (due to quartz grains); colors range from tan and beige to dark brown and black due to dendrites or staining; dull luster; granular texture.
Identified More sedimentary →
Explore Sandstone with Manganese Staining in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6 to 7 on the Mohs scale (due to quartz grains); colors range from tan and beige to dark brown and black due to dendrites or staining; dull luster; granular texture.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, river, or beach environments over millions of years.
Uses & applications
Used in construction, as dimension stone, paving, landscaping, and as a decorative specimen for rock collectors.
Geological facts
Dark patches and patterns on sandstone are frequently caused by percolating groundwater rich in iron or manganese oxides, sometimes forming delicate fern-like patterns known as manganese dendrites.
Field identification & locations
Commonly found in sedimentary rock formations worldwide. Field identification relies on observing the grainy texture typical of sand-sized grains cemented together.
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