Rock Identifier

Category

Sedimentary (Anthropogenic)

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

Shale (Shale (clastic sedimentary rock)) — Sedimentary

Shale

Shale (clastic sedimentary rock)

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Travertine (Tufa) (Terrestrial Sedimentary Limestone (CaCO3)) — sedimentary

Travertine (Tufa)

Terrestrial Sedimentary Limestone (CaCO3)

Collection of Minerals and Ores (Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)) — mineral

Collection of Minerals and Ores

Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)

Sandstone (likely Arkosic or Quartzose) (Arenite (SiO2 based with mineral inclusions)) — sedimentary

Sandstone (likely Arkosic or Quartzose)

Arenite (SiO2 based with mineral inclusions)

Sandstone (likely Graywacke or Arkosic varieties) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (likely Graywacke or Arkosic varieties)

Arenite (composed primarily of SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Chert / Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Red Jasper

Microcrystalline Quartz (SiO2)

Glauconite ((K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2) — mineral

Glauconite

(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

Chert (Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Limonite Sandstone (Ferruginous Sandstone (Hydrated Iron Oxide)) — sedimentary

Limonite Sandstone

Ferruginous Sandstone (Hydrated Iron Oxide)

Yellow Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (Agate)

Silicon Dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Chert (Nodule) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Satin Spar (often sold as Selenite) (Gypsum (CaSO4·2H2O)) — mineral

Satin Spar (often sold as Selenite)

Gypsum (CaSO4·2H2O)

Blue Celestite (Celestine) (Strontium sulfate (SrSO4)) — mineral

Blue Celestite (Celestine)

Strontium sulfate (SrSO4)

Quartz Crystal Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Satin Spar (Gypsum) (Hydrous Calcium Sulfate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum)

Hydrous Calcium Sulfate (CaSO4·2H2O)

Garnet (specifically Almandine) (Almandine - Fe3Al2(SiO4)3) — metamorphic

Garnet (specifically Almandine)

Almandine - Fe3Al2(SiO4)3

Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur). (Galena (PbS)) — mineral

Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur).

Galena (PbS)

Zoisite with Ruby (Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)) — metamorphic

Zoisite with Ruby

Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

Ammonite Fossil (Ammonoidea (primarily composed of Calcite, CaCO3)) — sedimentary

Ammonite Fossil

Ammonoidea (primarily composed of Calcite, CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Jasper Chert Nodules (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Jasper Chert Nodules

Silicon Dioxide (SiO2) with Hematite impurities

Sandstone (Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)) — Sedimentary Rock

Sandstone

Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)

Sedimentary Rock

Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily Quartz, SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Marble (Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)) — metamorphic

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

Sandstone (Quartz Arenite) (Clastic Sedimentary Rock - Quartz Arenite) — sedimentary

Sandstone (Quartz Arenite)

Clastic Sedimentary Rock - Quartz Arenite

Sandstone (likely Quartzose type) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (likely Quartzose type)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Graywacke type) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Sandstone (Graywacke type)

Clastic Sedimentary Rock (Lithic Sandstone)

Chert (specifically Flint or Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Silicon Dioxide (SiO2)

Chert (or Chalcedony) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (or Chalcedony)

Chert (Microcrystalline Quartz, SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Chert (Flint) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Flint)

Chert (Silicon Dioxide, SiO2)