Rock Identifier

Category

Sedimentary (Fossilized Organic Matter)

Browse sedimentary (fossilized organic matter) specimens identified by the Rock Identifier community.

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (likely Arkosic) (Arenite (SiO2 with KAlSi3O8)) — sedimentary

Sandstone (likely Arkosic)

Arenite (SiO2 with KAlSi3O8)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Ferruginous) (Arenite with Iron Oxide cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Conglomerate (Conglomerate rock) — sedimentary

Conglomerate

Conglomerate rock

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcite (CaCO3)) — sedimentary

Limestone

Calcite (CaCO3)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Sandstone (Quartz-rich) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartz-rich)

Arenite (composed primarily of SiO2)

Dalmatian Jasper (Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)) — igneous

Dalmatian Jasper

Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)

Limestone (Weathered) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Weathered)

Calcium Carbonate (CaCO3)

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

Sandstone

Arenite (composed primarily of SiO2)

Chert (Microcrystalline silica (SiO2)) — sedimentary

Chert

Microcrystalline silica (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sand Dollar Fossil (Echinoidea (Clypeasteroida)) — sedimentary

Sand Dollar Fossil

Echinoidea (Clypeasteroida)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Yellow Chalcedony (Agate/Chert) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Yellow Chalcedony (Agate/Chert)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Banded Calcite (often sold as Caribbean Calcite or Honey Calcite) (Calcium Carbonate (CaCO3)) — mineral

Banded Calcite (often sold as Caribbean Calcite or Honey Calcite)

Calcium Carbonate (CaCO3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

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

Satin Spar Selenite

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Chert (and Limestone) (Silicon Dioxide (SiO2)) — sedimentary

Chert (and Limestone)

Silicon Dioxide (SiO2)

Sandstone (likely Quartzose) (Sandstone (Principally SiO2)) — sedimentary

Sandstone (likely Quartzose)

Sandstone (Principally SiO2)

Sandstone (likely Greywacke variant) (Arenite) — sedimentary

Sandstone (likely Greywacke variant)

Arenite

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (likely Quartzose Sandstone) (Arenite (SiO2 predominantly)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (SiO2 predominantly)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Sandstone

Arenite (composed primarily of SiO2)

Greywacke (River Siltstone) (Lithic Sandstone / Greywacke) — sedimentary

Greywacke (River Siltstone)

Lithic Sandstone / Greywacke

Chert (Flint nodule) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Bituminous Coal (Bituminous coal (Carbonaceous sedimentary rock)) — sedimentary

Bituminous Coal

Bituminous coal (Carbonaceous sedimentary rock)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)

Sandstone (Ferruginous) (Arenite with Iron-Oxide Cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

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

Sandstone (Quartzose Sandstone)

Arenite (SiO2 principal component)

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

Sandstone

Arenite (composed primarily of SiO2)

Fossiliferous Limestone (Calcium Carbonate - CaCO3) — sedimentary

Fossiliferous Limestone

Calcium Carbonate - CaCO3

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)