Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
Piddock bored rock (likely Mudstone or Shale)
Ichnofossil (Gastrochaenolites borings) in Fine-grained Sedimentary Rock
Dendritic Agate or Manganese Nodule in Chert/Limestone
Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions
Red Jasper (River Stone)
Jasper (Silicon Dioxide, SiO2 plus iron oxide inclusions)
Blue Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
Blue Chalcedony
Chalcedony (Silicon Dioxide, SiO2)
Coprolite
Coprolite
Chert (Flint)
Chert (SiO2)
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
Sandstone (Ferruginous)
Arenite (with Iron Oxides)
Sandstone
Arenite (SiO2 + various cementing minerals)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Diamond
Diamond (pure carbon; C)
Conglomerate
Conglomerate (clastic sedimentary rock)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone (likely Siltstone or Mudstone variety)
Clastic Sedimentary Rock (primarily SiO2 with iron oxides)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Kambaba Jasper
Stromatolite (Microbial mat fossil in silicified sediment)
Stromatolite
Stromatolite (Cyanobacteria-formed Organo-sedimentary structure)
Sandstone (Ferruginous)
Arenite (Fe-bearing Clastic Sedimentary Rock)
Sandstone
Arenite
Sandstone (Weathered Pebble)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Fossilized Coral (Coquina/Limestone)
Cnidaria Anthozoa (Fossilized)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
Sulfur (on Matrix)
Native Sulfur (S8)
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Puddingstone (Jasper Conglomerate)
Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Quartz Pebble (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
Barite Rose on Marcasite
Barium Sulfate (BaSO4) on Iron Sulfide (FeS2)