Rock Identifier

Category

Sedimentary (Fossil)

Browse sedimentary (fossil) specimens identified by the Rock Identifier community.

Sandstone (Arenite (primarily composed of SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily composed of SiO2 - Silicon Dioxide)

Ferruginous Sandstone (with possible Epidote/Chlorite coloring) (Sandstone (SiO2 dominated with Fe2O3 staining)) — sedimentary

Ferruginous Sandstone (with possible Epidote/Chlorite coloring)

Sandstone (SiO2 dominated with Fe2O3 staining)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Clastic sedimentary rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite/Arkose)

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

Sandstone (likely Arkosic or Lithic Sandstone)

Clastic Sedimentary Rock (SiO2 with assorted minerals)

Ferruginous Sandstone (with Iron Oxide staining) (Clastic Sedimentary Rock - Quartz Arenite/Wacke) — sedimentary

Ferruginous Sandstone (with Iron Oxide staining)

Clastic Sedimentary Rock - Quartz Arenite/Wacke

Oolitic Limestone (Egg Stone) (Oolite (Chemical sedimentary rock, primarily CaCO3)) — sedimentary

Oolitic Limestone (Egg Stone)

Oolite (Chemical sedimentary rock, primarily CaCO3)

Picture Jasper (Silicified sedimentary or volcanic rock (primarily SiO2)) — sedimentary

Picture Jasper

Silicified sedimentary or volcanic rock (primarily SiO2)

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

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 oxides)

Sandstone (Greywacke) (Clastic Sedimentary Rock (SiO2 with lithic fragments)) — sedimentary

Sandstone (Greywacke)

Clastic Sedimentary Rock (SiO2 with lithic fragments)

Conglomerate with Native Copper (Clastic Sedimentary Rock with Native Copper (Cu)) — sedimentary

Conglomerate with Native Copper

Clastic Sedimentary Rock with Native Copper (Cu)

Travertine (Ceramic Tile) (Terrestrial Sedimentary Rock / Calcium Carbonate (CaCO3)) — sedimentary

Travertine (Ceramic Tile)

Terrestrial Sedimentary Rock / Calcium Carbonate (CaCO3)

Sandstone Pebble (Quartzite-rich) (Clastic Terrigenous Sedimentary Rock (SiO2 dominant)) — sedimentary

Sandstone Pebble (Quartzite-rich)

Clastic Terrigenous Sedimentary Rock (SiO2 dominant)

Quartz Veined Siltstone or Graywacke (Clastic Sedimentary Rock with Quartz (SiO2) veining) — sedimentary

Quartz Veined Siltstone or Graywacke

Clastic Sedimentary Rock with Quartz (SiO2) veining

Sandstone (Red Flagstone) (Clastic sedimentary rock (primarily Quartz - SiO2)) — sedimentary

Sandstone (Red Flagstone)

Clastic sedimentary rock (primarily Quartz - SiO2)

Sandstone Chert/Quartzite (Silicon Dioxide (SiO2) - Sedimentary Sandstone / Orthoquartzite) — sedimentary

Sandstone Chert/Quartzite

Silicon Dioxide (SiO2) - Sedimentary Sandstone / Orthoquartzite

Quartz Geode (Silicon Dioxide (SiO2) within a geode) — mineral

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Kyanite (Kyanite (Al2SiO5)) — mineral

Kyanite

Kyanite (Al2SiO5)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Limonite (Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)) — mineral

Limonite

Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)

Pyrite and Sunstone (Iron Sulfide (FeS2) and Plagioclase Feldspar ((Ca,Na)Al(Al,Si)Si2O8)) — mineral

Pyrite and Sunstone

Iron Sulfide (FeS2) and Plagioclase Feldspar ((Ca,Na)Al(Al,Si)Si2O8)

Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

Chalcedony (Agate/Carnelian type) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian type)

Silicon Dioxide (SiO2)

Satin Spar (Selenite) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Chert (Tripolitic Chert / Flint Nodules) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Tripolitic Chert / Flint Nodules)

Microcrystalline Quartz (SiO2)

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

Sandstone (Quartz Sandstone)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Beach Pebble) (Clastic sedimentary rock (primarily Quartz and Feldspar)) — sedimentary

Sandstone (Beach Pebble)

Clastic sedimentary rock (primarily Quartz and Feldspar)

Sandstone (Ferruginous/Red Sandstone) (Clastic sedimentary rock (primarily SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous/Red Sandstone)

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

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)

Carnelian (Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)) — mineral

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)

Sandstone (Weathered Pebble) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Weathered Pebble)

Arenite (primarily SiO2)

Sandstone (Ferruginous/Banded) (Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous/Banded)

Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)

Sandstone (Greywacke/Lithic Sandstone) (Arenite / Lithic Sandstone) — sedimentary

Sandstone (Greywacke/Lithic Sandstone)

Arenite / Lithic Sandstone

Limestone with Calcite Veining (Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Calcite Veining

Calcium Carbonate (CaCO3)

Ferruginous Sandstone (Red Sandstone) (Arenite with Hematite/Limonite cement) — sedimentary

Ferruginous Sandstone (Red Sandstone)

Arenite with Hematite/Limonite cement

Sandstone (Ferruginous) (Arenite (iron-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (iron-rich)

Limestone (Calcium carbonate (CaCO3)) — sedimentary

Limestone

Calcium carbonate (CaCO3)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Ferruginous) (Arenite (Iron-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Iron-rich)

Limestone (River Pebble) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (River Pebble)

Calcium Carbonate (CaCO3)