sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, opaque, and exhibits conchoidal fracture with varied banded or mottled colors.
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, waxy luster, opaque, and exhibits conchoidal fracture with varied banded or mottled colors.
Formation & geological history
Formed from silica-rich fluids precipitating in sedimentary environments or hydrothermal veins, often dating back over hundreds of millions of years.
Uses & applications
Used extensively for ornamental carvings, jewelry, lapidary art, and as a collector mineral.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry, mentioned in numerous historical texts.
Field identification & locations
Identify by its hardness, opacity, and smooth waxy polish; 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