Rock Identifier

Category

Sedimentary Like (Industrial Composite)

Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.

Learn about Sedimentary Like (Industrial Composite) in the encyclopedia

Adirondack Garnet

Adirondack Garnet

Conglomerate

Blue Line Jasper

Lime Green Tourmaline

Lime Green Tourmaline

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Sea Sediment Jasper

Argillite

Needle Tourmaline

Needle Tourmaline

Calc-Silicate Rock

Calc-Silicate Rock

Color-Change Tourmaline

Color-Change Tourmaline

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

Chert (Green variety)

Microcrystalline Quartz (SiO2)

Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Banded Chalcedony (Agate) (Chalcedony (SiO2) - Cryptocrystalline Quartz) — mineral

Banded Chalcedony (Agate)

Chalcedony (SiO2) - Cryptocrystalline Quartz

Sandstone River Pebble (Arenite (SiO2 predominantly)) — sedimentary

Sandstone River Pebble

Arenite (SiO2 predominantly)

Weathered fossil shell fragment (Likely a bivalve or gastropod shell, composed mainly of biogenic calcite/aragonite (CaCO₃)) — fossil

Weathered fossil shell fragment

Likely a bivalve or gastropod shell, composed mainly of biogenic calcite/aragonite (CaCO₃)

Siltstone (Siltstone (primarily composed of microcrystalline Quartz and Feldspar)) — sedimentary

Siltstone

Siltstone (primarily composed of microcrystalline Quartz and Feldspar)

Magnetite / Iron Ore (Magnetite (Fe3O4)) — mineral

Magnetite / Iron Ore

Magnetite (Fe3O4)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Agate (Chalcedony (SiO2)) — mineral

Agate

Chalcedony (SiO2)

Fossil bivalve shell (Likely a fossilized oyster or other marine bivalve; exact genus is indeterminate from the image) — fossil

Fossil bivalve shell

Likely a fossilized oyster or other marine bivalve; exact genus is indeterminate from the image

Oyster Shell (Aragonite/Calcite) (Calcium Carbonate (CaCO3)) — sedimentary

Oyster Shell (Aragonite/Calcite)

Calcium Carbonate (CaCO3)

Anthracite Coal (Coal (predominantly carbon)) — sedimentary

Anthracite Coal

Coal (predominantly carbon)

Greenschist (Greenschist (Chlorite-Epidote-Actinolite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite-Epidote-Actinolite Schist)

Quartz / Common Opal Transition (Silicon Dioxide (SiO2)) — mineral

Quartz / Common Opal Transition

Silicon Dioxide (SiO2)

Chert (potentially Jasper/Common Opal mixture) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (potentially Jasper/Common Opal mixture)

Microcrystalline Quartz (SiO2)

Fossilized shell or small fossil fragment (Indeterminate fossil; possibly a partial gastropod or bivalve, mineralized with calcite) — fossil

Fossilized shell or small fossil fragment

Indeterminate fossil; possibly a partial gastropod or bivalve, mineralized with calcite

Bauxite (Bauxite (mixture of Hydrous Aluminum Oxides)) — sedimentary

Bauxite

Bauxite (mixture of Hydrous Aluminum Oxides)

Red Sandstone (Arenite (with Iron Oxide / Hematite cementation)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Anthracite Coal (Anthracite (Carbon)) — sedimentary

Anthracite Coal

Anthracite (Carbon)

Polished black-and-golden tourmaline (Schorl–dravite tourmaline, commonly represented by black schorl over brown dravite) — mineral

Polished black-and-golden tourmaline

Schorl–dravite tourmaline, commonly represented by black schorl over brown dravite

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

Chert (Iron-stained)

Chert (Silicon Dioxide, SiO2)

Graphite Schist (C (Carbonaceous Schist)) — metamorphic

Graphite Schist

C (Carbonaceous Schist)

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

Chert (Green variety)

Silicon Dioxide (SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

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

Chert (specifically Red Chert/Jasper nodule)

Microcrystalline Quartz (SiO2)

Chalcedony (specifically Common Opal or Agate variant) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (specifically Common Opal or Agate variant)

Silicon Dioxide (SiO2)

Chalk (Sedimentary Pebble) (Calcium Carbonate (CaCO3) - Biogenic Limestone) — sedimentary

Chalk (Sedimentary Pebble)

Calcium Carbonate (CaCO3) - Biogenic Limestone

Sandstone (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone

Arenite (primarily Quartz, SiO2)

Slag (Industrial Glassy Byproduct) (Anthropogenic silicate byproduct (Slag)) — Mineral-like byproduct (often mistaken for igneous rock or meteorite)

Slag (Industrial Glassy Byproduct)

Anthropogenic silicate byproduct (Slag)

Mineral-like byproduct (often mistaken for igneous rock or meteorite)

Magnetite Sand (Black Sand) (Magnetite (Fe3O4)) — mineral

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Orange Calcite (Calcite (Calcium Carbonate - CaCO3)) — mineral

Orange Calcite

Calcite (Calcium Carbonate - CaCO3)

Garnet Gneiss (Gneiss containing almandine-pyrope garnet) — metamorphic

Garnet Gneiss

Gneiss containing almandine-pyrope garnet

Red Sandstone (Clastic Sedimentary Rock (typically contains Quartz and Iron Oxide)) — sedimentary

Red Sandstone

Clastic Sedimentary Rock (typically contains Quartz and Iron Oxide)

Garnet (Garnet group [X3Y2(SiO4)3]) — mineral

Garnet

Garnet group [X3Y2(SiO4)3]

Iron-rich concretion or slag-like rock (Goethite–hematite limonite concretion, possibly iron slag) — sedimentary

Iron-rich concretion or slag-like rock

Goethite–hematite limonite concretion, possibly iron slag

Quartz Geode (Silicon Dioxide (SiO2) within a sedimentary or volcanic shell) — mineral

Quartz Geode

Silicon Dioxide (SiO2) within a sedimentary or volcanic shell

Polished brecciated jasper (Microcrystalline quartz (SiO₂), commonly colored by iron oxides) — mineral

Polished brecciated jasper

Microcrystalline quartz (SiO₂), commonly colored by iron oxides

Chert (Jasper) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon dioxide (SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

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

Green Chert (Jasper)

Silicon Dioxide (SiO2)