Rock Identifier

Category

Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble)

Browse sedimentary rock (specifically a clastic sedimentary rock formed into a cobble) specimens identified by the Rock Identifier community.

Painted River Rock (Anthropogenic-modified Siliciclastic Sedimentary Rock) — Sedimentary

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Sandstone (Quartz-rich) (Arenite (SiO2 based clastic rock)) — sedimentary

Sandstone (Quartz-rich)

Arenite (SiO2 based clastic rock)

Sandstone (Red Arkose) (Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)) — sedimentary

Sandstone (Red Arkose)

Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)

Sandstone (Ferruginous) (Arenite (with iron oxide cement, Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite (with iron oxide cement, Fe2O3)

Sandstone (River Rock) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (River Rock)

Arenite (composed primarily of SiO2)

Sandstone (likely Arkosic or Lithic) (Clastic Sedimentary Rock (SiO2 with accessory minerals)) — sedimentary

Sandstone (likely Arkosic or Lithic)

Clastic Sedimentary Rock (SiO2 with accessory minerals)

Sandstone Concretion (Clastic sedimentary rock (primarily Quartz SiO2)) — sedimentary

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

Sandstone (Quartzite-rich River Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich River Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Conglomerate (Conglomerate (SiO2 matrix with various silicate clasts)) — sedimentary

Conglomerate

Conglomerate (SiO2 matrix with various silicate clasts)

Sandstone (lithic/greywacke variety) (Arenite (composed primarily of SiO2 with various lithic fragments)) — sedimentary

Sandstone (lithic/greywacke variety)

Arenite (composed primarily of SiO2 with various lithic fragments)

Sandstone (Greywacke/Lithic Sandstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Greywacke/Lithic Sandstone)

Arenite (composed primarily of SiO2)

Banded Sandstone (Arenite with Liesegang banding) — sedimentary

Banded Sandstone

Arenite with Liesegang banding

Sandstone (Quartzose Sandstone) (Clastic sedimentary rock (SiO2 primary composition)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (SiO2 primary composition)

Red Sandstone (Hematitic) (Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)) — sedimentary

Red Sandstone (Hematitic)

Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Limestone (specifically Dolomitic/Crystalline Limestone) (Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)) — sedimentary

Limestone (specifically Dolomitic/Crystalline Limestone)

Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)

Sandstone (Quartzite-rich River Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich River Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartzose Sandstone) (Arenite (SiO2 principal component)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (SiO2 principal component)

Banded Sandstone (Arenite (composed primarily of Quartz: SiO2)) — sedimentary

Banded Sandstone

Arenite (composed primarily of Quartz: SiO2)

Gneiss (specifically a Banded Gneiss cobble) (Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)) — metamorphic

Gneiss (specifically a Banded Gneiss cobble)

Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)

Chert (Iron-stained) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Iron-stained)

Chert (Silicon Dioxide, SiO2)

Sandstone (with potentially metamorphic or basaltic bands) (Arenite / Lithic Wacke) — sedimentary

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Hag Stone (Perforated Sedimentary Rock (typically Limestone or Sandstone)) — sedimentary

Hag Stone

Perforated Sedimentary Rock (typically Limestone or Sandstone)

Green Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Green Chert (Jasper)

Silicon Dioxide (SiO2)

Banded Sandstone (Liesegang Rings) (Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)) — sedimentary

Banded Sandstone (Liesegang Rings)

Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)

Sandstone (Water-worn Cobble) (Arenite (variable composition, primarily SiO2)) — sedimentary

Sandstone (Water-worn Cobble)

Arenite (variable composition, primarily SiO2)

Sandstone Beach Pebble (Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)) — sedimentary

Sandstone Beach Pebble

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)

Sandstone (with ripple marks) (Arenite / Quartz Sandstone) — sedimentary

Sandstone (with ripple marks)

Arenite / Quartz Sandstone

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Graywacke (River Cobble) (Graywacke (Lithic Sandstone)) — sedimentary

Graywacke (River Cobble)

Graywacke (Lithic Sandstone)

Metaconglomerate (Metaconglomerate (Quartzite conglomerate)) — metamorphic

Metaconglomerate

Metaconglomerate (Quartzite conglomerate)

Gneiss (specifically a Granitic Gneiss) (Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)) — metamorphic

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Sandstone (specifically an Iron-Concretion) (Arenite with Iron Oxide (Limonite/Goethite) cementation) — sedimentary

Sandstone (specifically an Iron-Concretion)

Arenite with Iron Oxide (Limonite/Goethite) cementation

Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

Chert (specifically Yellow or River Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Yellow or River Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (likely Greywacke or Siltstone variety) (Arenite / Siltstone (primarily SiO2)) — sedimentary

Sandstone (likely Greywacke or Siltstone variety)

Arenite / Siltstone (primarily SiO2)

Jasper Conglomerate (specifically Puddingstone) (Jasper Conglomerate (Siliceous sedimentary rock)) — sedimentary

Jasper Conglomerate (specifically Puddingstone)

Jasper Conglomerate (Siliceous sedimentary rock)

Sandstone Pebble with Iron Staining (Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)) — sedimentary

Sandstone Pebble with Iron Staining

Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)

Pebble (Clast (specifically a granule or small pebble)) — Sedimentary

Pebble

Clast (specifically a granule or small pebble)

Sandstone (specifically Flagstone) (Arenite (primarily composed of SiO2)) — sedimentary

Sandstone (specifically Flagstone)

Arenite (primarily composed of SiO2)