Rock Identifier

Category

Sedimentary Rock

Browse sedimentary rock specimens identified by the Rock Identifier community.

Learn about Sedimentary Rock in the encyclopedia

Asphalt Rock

Asphalt Rock

Rock Gypsum

Rock Gypsum

Conglomerate

Conglomerate

Rock Salt

Rock Salt

Coral Rock

Coral Rock

Coal

Coal

Limestone

Limestone

Calc-Silicate Rock

Calc-Silicate Rock

Claystone

Claystone

Talc-carbonate Rock

Talc-carbonate Rock

Mudstone

Mudstone

Ironstone

Ironstone

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

Sandstone (likely Fossiliferous)

Arenite / Sedimentum arenaceum

Milky Quartz Pebbles (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebbles

Silicon Dioxide (SiO2)

Orange Calcite (with White Calcite/Quartz matrix) (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite (with White Calcite/Quartz matrix)

Calcium Carbonate (CaCO3)

Botryoidal Agate (Silicon Dioxide (SiO2)) — mineral

Botryoidal Agate

Silicon Dioxide (SiO2)

Vuggy Quartz on Matrix (Silicon Dioxide (SiO2)) — mineral

Vuggy Quartz on Matrix

Silicon Dioxide (SiO2)

Carnelian (Carnelian (Chalcedony / SiO2)) — mineral

Carnelian

Carnelian (Chalcedony / SiO2)

Fluorite with Quartz coating (Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)) — mineral

Fluorite with Quartz coating

Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

Yellow Chalcedony (Agate or Citrine Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (Agate or Citrine Quartz)

Silicon Dioxide (SiO2)

Jasper (Cryptocrystalline Quartz (SiO2)) — sedimentary

Jasper

Cryptocrystalline Quartz (SiO2)

Black Opal (Hydrated silica (SiO2·nH2O)) — mineraloid

Black Opal

Hydrated silica (SiO2·nH2O)

Quartz (Milky Quartz / Quartzite) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz / Quartzite)

Silicon Dioxide (SiO2)

Chert (Nodular) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Nodular)

Microcrystalline Silica (SiO2)

Quartzite Geode or Crystalline Quartz Node (Silicon Dioxide (SiO2)) — metamorphic

Quartzite Geode or Crystalline Quartz Node

Silicon Dioxide (SiO2)

Fossiliferous Shale or Slate with Plant Fossils (Fossil-bearing argillaceous rock) — Sedimentary/Metamorphic

Fossiliferous Shale or Slate with Plant Fossils

Fossil-bearing argillaceous rock

Sedimentary/Metamorphic

Chert (Iron-rich River Pebble) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-rich River Pebble)

Cryptocrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (primarily Quartz/Chalcedony, formula: SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, formula: SiO2)

Ferruginous Sandstone (Sandstone with Iron Oxide (Limonite/Goethite)) — sedimentary

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

Conglomerate (Conglomerate (SiO2 matrix with various silicate clasts)) — sedimentary

Conglomerate

Conglomerate (SiO2 matrix with various silicate clasts)

Sandstone (likely Arkose or Quartz Sandstone) (Arenite (SiO2 principal component)) — sedimentary

Sandstone (likely Arkose or Quartz Sandstone)

Arenite (SiO2 principal component)

Sandstone Concretion (Omar or Nut Rock) (Sedimentary Concretion (specifically an 'Omarolluk' or Omar)) — sedimentary

Sandstone Concretion (Omar or Nut Rock)

Sedimentary Concretion (specifically an 'Omarolluk' or Omar)

Sandstone (Ferruginous) (Arenite (iron-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (iron-rich)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining) (Arenite (SiO2 predominantly)) — sedimentary

Sandstone (with Iron Staining)

Arenite (SiO2 predominantly)

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

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Chert (varietal: Flint Pitted Pebble) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (varietal: Flint Pitted Pebble)

Cryptocrystalline Quartz (SiO2)

Quartzite (Quartzite (composed primarily of Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of Silicon Dioxide, SiO2)

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

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Turquoise in Matrix (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise in Matrix

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Chalcedony (Agate and Jasper Pebbles) (Microcrystalline Quartz (SiO2)) — sedimentary

Chalcedony (Agate and Jasper Pebbles)

Microcrystalline Quartz (SiO2)

Coquina or Fossiliferous Limestone (Fossiliferous Limstone (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Limstone (CaCO3)

Dolomite (Dolostone) (Dolomite [CaMg(CO3)2]) — sedimentary

Dolomite (Dolostone)

Dolomite [CaMg(CO3)2]

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Sandstone Concretion (Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)) — sedimentary

Sandstone Concretion

Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)

Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock with Arfvedsonite) — igneous

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

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

Chert (Jasper)

Silicon Dioxide (SiO2)

Sandstone (Ferruginous) (Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with Fe2O3)

Pink Opal (Amorphous Hydrous Silica (SiO2·nH2O)) — mineral

Pink Opal

Amorphous Hydrous Silica (SiO2·nH2O)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Bauxite (Bauxite (principal ore of aluminum, primarily Al(OH)3)) — sedimentary

Bauxite

Bauxite (principal ore of aluminum, primarily Al(OH)3)

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

Chert (Jasper variation)

Silicon Dioxide (SiO2)

Bauxite (Laterite) (Hydrated aluminum oxides (Al2O3·nH2O)) — sedimentary

Bauxite (Laterite)

Hydrated aluminum oxides (Al2O3·nH2O)