sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, typically brown, red, or yellow, with a conchoidal fracture.
Identified More sedimentary →
Explore Jasper in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, typically brown, red, or yellow, with a conchoidal fracture.
Formation & geological history
Formed by the precipitation of silica-rich fluids in sedimentary basins or volcanic environments over millions of years.
Uses & applications
Used primarily for ornamental carvings, jewelry, and polished collector specimens.
Geological facts
Jasper has been used since ancient times for talismans, seals, and decorative weaponry due to its durability and rich color.
Field identification & locations
Identify by its waxy luster, opacity, and hardness that scratches glass. Commonly found in riverbeds and mountainous regions worldwide.
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