Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary rock specimens identified by the Rock Identifier community.
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone (Quartzose Sandstone)
Clastic Terrigenous Sedimentary Rock (primarily SiO2)
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
River Stone (likely Quartzite or Chert)
Sedimentary rock composed of Silicon Dioxide (SiO2)
River Cobble (Quartzite-rich Sandstone)
Clastic Sedimentary Rock (Litharenite/Quartzite transition)
Stromatolite
Biogenic Sedimentary Rock (Precambrian Stromatolite fossil)
Sandstone
Arenite (SiO2 based with mineral cement)
Travertine
Terrestrial Sedimentary Limestone (CaCO3)
Sandstone (likely Iron-rich or Arkosic)
Arenite (SiO2 with FeO(OH) or Fe2O3 staining)
Sandstone (Ferruginous)
Arenite (SiO2 with iron oxide impurities)
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
Sandstone
Arenite (primarily Quartz-rich sedimentary rock)
Sandstone (clastic)
Clastic Sedimentary Rock (primarily composed of SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
Travertine
Terrestrial Sedimentary Rock (Calcium Carbonate, CaCO3)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (composed mostly of SiO2)
Sandstone with Iron Staining
Clastic sedimentary rock (SiO2 with iron oxides)
Pebble (Likely Basalt or Siltstone)
Clastic sedimentary rock or mafic volcanic rock
Ferruginous Sandstone (with Iron Oxide staining)
Clastic Sedimentary Rock - Quartz Arenite/Wacke
Sandstone
Arenite
Chert (specifically Brown Chert or Jasper)
Microcrystalline Quartz (SiO2)
Fossilized Gastropod (Snail)
Class Gastropoda (internal mold or 'steinkern')
Chert (Flint)
Microcrystalline quartz (SiO2)
Sandstone (Quartzose Pebble)
Clastic Sedimentary Rock (Litharenite/Quartz arenite)
Sandstone
Arenite (SiO2 principal)
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
Quartz Veined Siltstone or Graywacke
Clastic Sedimentary Rock with Quartz (SiO2) veining
Sandstone
Arenite (specifically Quartz Arenite)
Sandstone
Arenite (primarily SiO2)
Conglomerate with Native Copper
Clastic Sedimentary Rock with Native Copper (Cu)
Sandstone (Quartzose)
Sandstone (clastic sedimentary rock, primarily SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 primary composition)
Oolitic Limestone (Egg Stone)
Oolite (Chemical sedimentary rock, primarily CaCO3)
Sandstone Pebble (Quartzite-rich)
Clastic Terrigenous Sedimentary Rock (SiO2 dominant)
Limestone with Calcite Crystals
Sedimentary Rock containing Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite (Fe-bearing Clastic Sedimentary Rock)
Coal (Bituminous or Anthracite)
Carbonaceous sedimentary rock (primarily Carbon, C)
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Sandstone
Clastic Sedimentary Rock (composed of SiO2 grains)