Fossilized Bivalve Shell
Bivalvia (fossil specimen)
Category
Browse sedimentary (synthetic) specimens identified by the Rock Identifier community.
Fossilized Bivalve Shell
Bivalvia (fossil specimen)
Concretion (Sandstone)
Sandstone Concretion
Sandstone
Arenite (SiO2 principal)
Crinoid Marble (Fossilized Limestone)
Crinoidal Limestone (comprising Calcite/Aragonite CaCO3)
Pyrite (on Shale/Matrix)
Iron Disulfide (FeS2)
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
Quartz Vein in Sedimentary Rock
Silicon Dioxide (SiO2) with host Chert or Limestone
Geode (Unopened)
Siliceous Septarian Concretion / Geode (SiO2)
Sandstone or Mudstone
Sedimentary Rock (Sandstone/Mudstone)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 predominantly)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
Sandstone or Mudstone with Iron Staining
Ferruginous Sandstone/Mudstone
Claystone Concretion
Septarian Concretion (Ironstone-rich)
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 principal component)
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
Quartz-veined Sedimentary Rock
Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)
Chert (and associated Sedimentary rocks)
Microcrystalline Silica (SiO2)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)
Chert (specifically Silex or Flint)
Microcrystalline Quartz (SiO2)
Geode (unopened)
Silica-filled Concretion (SiO2)
Jasper (Iron-rich Chert)
Silicon Dioxide (SiO2) with impurities of Hematite or Goethite
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Jasper or Agate
Silicon dioxide (SiO2)
Desert Varnish on Sandstone
Ferromanganese coating on Quartz Arenite
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper (possibly Agatized Jasper)
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
Sandstone (River Cobble)
Sandstone (primarily composed of silica, SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Flint/Jasper)
Silicon Dioxide (SiO2)
Sandstone (Red/Brown)
Arenite (composed primarily of SiO2)
Chert (Jasper-like Silicate)
Microcrystalline Quartz (SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (Quartzite Pebble)
Arenite (SiO2)