sedimentary
Weathered, iron-stained rock pebble
Indeterminate; possibly iron-oxide-cemented sandstone or laterite
AI-generated identification · may be incorrectTan to ochre, rough and porous, with a dull earthy luster and no visible crystals. Hardness and composition cannot be reliably determined from the image alone.
Identified More sedimentary →
Explore Weathered, iron-stained rock pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Tan to ochre, rough and porous, with a dull earthy luster and no visible crystals. Hardness and composition cannot be reliably determined from the image alone.
Formation & geological history
Likely formed from weathered mineral grains cemented or enriched by iron oxides, then rounded by transport; its geological age and exact formation environment are unknown.
Uses & applications
No specific industrial or jewelry use can be identified; ordinary pebbles are mainly collected or used decoratively.
Geological facts
Iron oxides such as hematite and goethite commonly produce yellow, brown, and reddish staining in rocks.
Field identification & locations
The rounded shape and rusty coloration are visible clues, but a fresh surface, hardness test, and acid test would help distinguish sandstone, laterite, and other possibilities. Such pebbles occur widely in soils, river deposits, and weathered outcrops.
More like this
Other sedimentary specimens
Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary