Sandstone (Ferruginous)
Arenite (with Hematite/Limonite cement)
Category
Browse sedimentary (if natural jasper) or artificial (if slag) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Arenite (with Hematite/Limonite cement)
Sandstone
Arenite
Sandstone
Arenite (composed primarily of Quartz, SiO2)
Fancy Jasper
Silicon Dioxide (SiO₂)
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Tumbled pink granite or feldspar-rich granitic pebble
Granite, composed mainly of quartz, potassium feldspar, and plagioclase; exact identification is uncertain from the image
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
Chalcedony (Agate and Jasper Pebbles)
Microcrystalline Quartz (SiO2)
Red Jasper (or Banded Jasper)
Silicon Dioxide (SiO2 with Hematite impurities)
Onyx (beads)
SiO2 (Cryptocrystalline Quartz)
Sandstone (Pebble)
Sandstone
Leopard Skin Jasper
Jasper (Silicon Dioxide with impurities), SiO2
Red Jasper or Ironstone concretion
SiO2 or Fe2O3
Jasper (specifically Yellow or Picture Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper (possibly Orbicular Jasper)
Silicon Dioxide with inclusions (SiO2)
Agate
Silicon dioxide (Chalcedony), SiO2
Dalmatian Stone (commonly called Dalmatian Jasper)
Peralkaline Rock (mixed Feldspar, Quartz, and Arfvedsonite)
Weathered quartz-rich rock, possibly chert or quartzite fragment
Indeterminate; likely microcrystalline quartz (SiO₂), possibly with iron-oxide staining
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Red Jasper (River Pebble)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Yellow Jasper
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide impurities
Chert (Jasper)
Silicon Dioxide (SiO2)
Poppy Jasper
Silicon Dioxide (SiO2) with Hematite and Iron Oxide inclusions
Jasper (Yellow Jasper)
Silicon Dioxide (SiO2) with iron inclusions
Kambaba Jasper
Stromatolite (Fossilized Algae)
Jasper (specifically Oolitic or Brecciated Jasper)
Silicon Dioxide (SiO₂)
Tumbled carnelian/chalcedony
Carnelian, a reddish variety of microcrystalline quartz (SiO₂)
Jasper with Agate Inclusions
Silicon Dioxide (SiO2) - variety of Quartz/Chert
Concrete
Anthropogenic Conglomerate
Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Jasper (SiO2 with Fe2O3 inclusions)
Chert
Microcrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert/Jasper
Microcrystalline Quartz (SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Jasper (Chert)
SiO2 (Microcrystalline Quartz with Iron Oxide impurities)
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Bivalve Fossil (Shell-bearing Sedimentary Rock)
Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix
Dalmatian Jasper
Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)