Siltstone with flute casts or scratch marks
Clastic Sedimentary Rock (Siltstone/Fine-grained Sandstone)
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Siltstone with flute casts or scratch marks
Clastic Sedimentary Rock (Siltstone/Fine-grained Sandstone)
Coquina / Limonite-stained Limestone
Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)
Hag Stone
Calcareous sedimentary rock (often Chert, Flint, or Limestone)
Sandstone Pebble with Iron Staining
Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)
Banded Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily Quartzite and Feldspar grains)
Sandstone (Red Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)
Conglomerate
Clastic Conglomerate (Lithic-rich)
Ironstone with Pyrite
Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
Ferruginous Sandstone (Ironstone)
Ferruginous Sandstone / Limonite-cemented Quartz Sandstone
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Ironstone Concretion (Limonite/Goethite)
Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)
Fossiliferous Brachiopod in Shale
Brachiopoda (Phylum) preserved in Carbonaceous Shale
Dalmatian Jasper / Dalmatian Stone
Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)
Dalmatian Stone
Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)
Dalmation Stone (Dalmation Jasper)
Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)
Sandstone (with Limonite staining)
Arenite (FeOx-rich)
Chert (specifically Jasper or Flint type)
Microcrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Arenite (Fe-rich)
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Sandstone (likely Graywacke or Lithic Sandstone)
Arenite / Wacke (SiO2 based with lithic fragments)
Sandstone (Quartzose)
Arenite (SiO2 principal)
Sandstone (Quartzite-rich Pebble)
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
Sandstone (Ferruginous)
Arenite (Fe-rich SiO2)
Shale with Plant Fossils / Carbonaceous Shale
Laminated Mudrock (Siliciclastic)
Sandstone (River Cobble)
Arenite
Limestone
CaCO3 (principally composed of Calcite)
Sandstone
Arenite
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)
Shale
Mudstone/Shale
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone with Bedding Planes
Arenite (Sedimentary rock composed primarily of sand-sized minerals)
Petrified Wood
Silicified Wood (SiO2)