Rock Identifier

Category

Sedimentary (Anthropogenic)

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

Learn about Sedimentary (Anthropogenic) in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Coal

Kambaba Jasper

Limestone

Asphalt Rock

Claystone

Mudstone

Sapropel

Bituminous Shale

Bituminous Shale

Shale (possibly) (Shale (fine-grained clastic sedimentary rock)) — sedimentary

Shale (possibly)

Shale (fine-grained clastic sedimentary rock)

Ironstone / Limonite Concretion (Hydrated Iron Oxide Rock (FeO(OH)·nH2O with SiO2)) — sedimentary

Ironstone / Limonite Concretion

Hydrated Iron Oxide Rock (FeO(OH)·nH2O with SiO2)

Agate / Chalcedony (Silicon dioxide (SiO2)) — mineral

Agate / Chalcedony

Silicon dioxide (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Yellow Jasper / Chalcedony (Silicon Dioxide (SiO2) with iron inclusions) — mineral

Yellow Jasper / Chalcedony

Silicon Dioxide (SiO2) with iron inclusions

Yellow Jasper (Silica (Silicon Dioxide, SiO2) with iron inclusions) — sedimentary

Yellow Jasper

Silica (Silicon Dioxide, SiO2) with iron inclusions

Sandstone (with Iron Staining) (Sandstone (mainly Quartz, SiO2, with Iron Oxides like Goethite/Hematite)) — sedimentary

Sandstone (with Iron Staining)

Sandstone (mainly Quartz, SiO2, with Iron Oxides like Goethite/Hematite)

Gypsum (Satin Spar/Desert Rose variety) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Gypsum (Satin Spar/Desert Rose variety)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Sandstone with Hematite staining (Arenite with Fe2O3 inclusions) — sedimentary

Sandstone with Hematite staining

Arenite with Fe2O3 inclusions

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily 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 (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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)

Quartz-rich sandstone or granitic fragment (Likely quartz–feldspar sandstone; exact identification is uncertain from the photograph) — sedimentary

Quartz-rich sandstone or granitic fragment

Likely quartz–feldspar sandstone; exact identification is uncertain from the photograph

Quartz Geode (Silicon Dioxide (SiO2) within a sedimentary/igneous host) — mineral

Quartz Geode

Silicon Dioxide (SiO2) within a sedimentary/igneous host

Sandstone (likely Fossiliferous) (Arenite / Sedimentum arenaceum) — sedimentary

Sandstone (likely Fossiliferous)

Arenite / Sedimentum arenaceum

Hag Stone (Sandstone with Boreholes) (Bored Sandstone (Sedimentary rock with lithophaga-style borings)) — sedimentary

Hag Stone (Sandstone with Boreholes)

Bored Sandstone (Sedimentary rock with lithophaga-style borings)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Gemstone Tree Brooch (Agate and Quartz) (Silicon Dioxide (SiO2)) — mineral

Gemstone Tree Brooch (Agate and Quartz)

Silicon Dioxide (SiO2)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

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

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Carnelian (Silicon Dioxide (Chalcedony variety)) — gemstone

Carnelian

Silicon Dioxide (Chalcedony variety)

Jasper and Chalcedony Composite (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper and Chalcedony Composite

Silicon Dioxide (SiO2) microcrystalline quartz

Quartz (Agate/Chalcedony nodule) (Silicon dioxide (SiO2)) — mineral

Quartz (Agate/Chalcedony nodule)

Silicon dioxide (SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Agate (Chalcedony (SiO2)) — sedimentary

Agate

Chalcedony (SiO2)

Quartz (Agate/Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Agate/Chalcedony)

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Agate Geode (Silicon Dioxide (Chalcedony/Quartz), SiO2) — sedimentary

Agate Geode

Silicon Dioxide (Chalcedony/Quartz), SiO2

Limonite (FeO(OH)•nH2O) — mineral

Limonite

FeO(OH)•nH2O

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Quartz (Yellow Quartz / Citrine / Calcite) (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)) — mineral

Quartz (Yellow Quartz / Citrine / Calcite)

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Smoky Quartz / Chalcedony (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz / Chalcedony

Silicon Dioxide (SiO2)

Quartzite / Sandstone (SiO2 (Silicon Dioxide)) — metamorphic

Quartzite / Sandstone

SiO2 (Silicon Dioxide)

White Quartz Beads (Silicon Dioxide (SiO2)) — mineral

White Quartz Beads

Silicon Dioxide (SiO2)