Rock Identifier

Category

Anthropogenic (Man Made Material Mimicking Sedimentary Rock)

Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.

Learn about Anthropogenic (Man Made Material Mimicking Sedimentary Rock) in the encyclopedia

Rock Gypsum

Limestone

Dunite

Claystone

Diatomite

Tripolite

Sandstone

Marl

Gondite

Lherzolite

Blue Goldstone

Phosphorite

Gneiss (Gneiss (quartz-feldspar-biotite gneiss)) — metamorphic

Gneiss

Gneiss (quartz-feldspar-biotite gneiss)

Chert (River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Ironstone Concretion (Siderite / Hematite-bearing Sedimentary Rock) — sedimentary

Ironstone Concretion

Siderite / Hematite-bearing Sedimentary Rock

Chert (specifically Jasper) (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Chert (specifically Jasper)

Silicon dioxide (SiO2) with iron oxide inclusions

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Red Sandstone (Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)) — sedimentary

Red Sandstone

Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)

Limestone (Sedimentary rock composed mainly of calcium carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary rock composed mainly of calcium carbonate (CaCO3)

Jasper (Red Jasper) (Silicon Dioxide (SiO₂)) — sedimentary

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Druzy Quartz Geode (Partially Open) (Silicon Dioxide (SiO2) within Sedimentary Host Rock) — sedimentary

Druzy Quartz Geode (Partially Open)

Silicon Dioxide (SiO2) within Sedimentary Host Rock

Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

Weathered quartz-bearing rock, possibly sandstone or quartzite (Provisional: quartzite (mostly SiO₂); could alternatively be iron-stained quartz sandstone) — metamorphic

Weathered quartz-bearing rock, possibly sandstone or quartzite

Provisional: quartzite (mostly SiO₂); could alternatively be iron-stained quartz sandstone

Biotite Schist (likely) (Biotite Schist (rock), Biotite (mineral)) — Metamorphic

Biotite Schist (likely)

Biotite Schist (rock), Biotite (mineral)

Petrified Wood (Fossilized Wood (SiO2 replacing organic matter)) — fossil

Petrified Wood

Fossilized Wood (SiO2 replacing organic matter)

Biotite Schist (Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)) — metamorphic

Biotite Schist

Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Yellow Quartzite River Cobble (Meta-quartzite (SiO2 with iron oxide staining)) — metamorphic

Yellow Quartzite River Cobble

Meta-quartzite (SiO2 with iron oxide staining)

Banded chert or silicified limestone nodule (Microcrystalline quartz (SiO₂), possibly replacing carbonate fossils) — sedimentary

Banded chert or silicified limestone nodule

Microcrystalline quartz (SiO₂), possibly replacing carbonate fossils

Argillite (Argillite (Fine-grained sedimentary rock composed mostly of clay-sized particles)) — sedimentary

Argillite

Argillite (Fine-grained sedimentary rock composed mostly of clay-sized particles)

Fossilized Gastropod Shell (Gastropoda (Fossilized internal mold or shell body)) — fossil

Fossilized Gastropod Shell

Gastropoda (Fossilized internal mold or shell body)

Banded Iron Formation / Chert with Quartz Veining (Banded Iron Formation (BIF) / Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Iron Formation / Chert with Quartz Veining

Banded Iron Formation (BIF) / Cryptocrystalline Quartz (SiO2)

Micaceous schist (likely biotite schist) (Schist dominated by biotite mica, quartz, and feldspar) — metamorphic

Micaceous schist (likely biotite schist)

Schist dominated by biotite mica, quartz, and feldspar

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Likely quartz-rich rock fragment (Probably microcrystalline quartz (SiO₂), possibly a pale chert or quartzite fragment) — mineral

Likely quartz-rich rock fragment

Probably microcrystalline quartz (SiO₂), possibly a pale chert or quartzite fragment

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Yellow Chert (River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Yellow Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Tufa (Calcareous Tufa (CaCO3)) — sedimentary

Tufa

Calcareous Tufa (CaCO3)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Coquina / Fossiliferous Limestone (Calcite-rich Bioclastic Sedimentary Rock (CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Calcite-rich Bioclastic Sedimentary Rock (CaCO3)

White quartz geode (Quartz, silicon dioxide (SiO₂), likely a druzy quartz geode) — mineral

White quartz geode

Quartz, silicon dioxide (SiO₂), likely a druzy quartz geode

Laterite (Laterite (no specific mineral formula as it's a rock type)) — Sedimentary

Laterite

Laterite (no specific mineral formula as it's a rock type)

Chert (specifically Flint or Gray Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Gray Chalcedony)

Microcrystalline Quartz (SiO2)

Fossilized Coral (Rugose coral / Tabulate coral fossil in limestone matrix) — fossil

Fossilized Coral

Rugose coral / Tabulate coral fossil in limestone matrix

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

Chert (or Chalcedony)

Microcrystalline Quartz (SiO2)

Jasper with Quartz Vein (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper with Quartz Vein

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Rhodonite (Rhodonite, manganese inosilicate — MnSiO₃; the specimen may include quartz, feldspar, and black manganese-oxide minerals in the matrix) — mineral

Rhodonite

Rhodonite, manganese inosilicate — MnSiO₃; the specimen may include quartz, feldspar, and black manganese-oxide minerals in the matrix

Chert / Jasper (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert / Jasper

Cryptocrystalline Silica (SiO2)

Chert (Jasper and Chalcedony) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper and Chalcedony)

Silicon Dioxide (SiO2)

Chert (variations include Flint or Jasper) (Chert (chemical sedimentary rock), Quartz (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Chert (chemical sedimentary rock), Quartz (SiO2)

Polished red jasper (Jasper, microcrystalline quartz (SiO₂) colored by iron oxides) — mineral

Polished red jasper

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Tumbled pale greenish stone, likely serpentine or altered limestone (Probable serpentine-group rock (antigorite/lizardite), possibly serpentinite; identification is visual only) — metamorphic

Tumbled pale greenish stone, likely serpentine or altered limestone

Probable serpentine-group rock (antigorite/lizardite), possibly serpentinite; identification is visual only