Rock Identifier

Category

Rock (Likely Sedimentary)

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

Learn about Rock (Likely Sedimentary) in the encyclopedia

Asphalt Rock

Rock Gypsum

Conglomerate

Breccia

Ironstone

Limestone

Claystone

Phosphorite

Chert

Coal

Pisolite

Mudstone

Quartz Geode (Silicon Dioxide (SiO2) in Geodic habit) — mineral

Quartz Geode

Silicon Dioxide (SiO2) in Geodic habit

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

Banded Chert / Flint

Microcrystalline Quartz (SiO2)

Chert (with Desert Varnish/Iron Stain) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (with Desert Varnish/Iron Stain)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Sedimentary Rock (Quartz arenite or arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite or arkose)

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Sandstone (Arenite (Clastic Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Clastic Sedimentary Rock)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Siltstone (Siltstone (Clastic Sedimentary Rock)) — sedimentary

Siltstone

Siltstone (Clastic Sedimentary Rock)

Sandstone Pebble (Arenite (SiO2 with minor mineral cements)) — sedimentary

Sandstone Pebble

Arenite (SiO2 with minor mineral cements)

Sandstone (Iron-stained) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Iron-stained)

Arenite (primarily SiO2 with Fe2O3 staining)

Dalmatian Jasper (Peralkaline rhyolite with arfvedsonite inclusions) — igneous

Dalmatian Jasper

Peralkaline rhyolite with arfvedsonite inclusions

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Ferruginous) (Arenite with Iron Oxide staining (Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide staining (Fe2O3)

Dalmation Stone (Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)) — igneous

Dalmation Stone

Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)

Chert or flint (Microcrystalline quartz (SiO₂), likely chalcedony-rich chert) — sedimentary

Chert or flint

Microcrystalline quartz (SiO₂), likely chalcedony-rich chert

Weathered iron-rich sandstone or laterite (Ferruginous sandstone; potentially lateritic ironstone, composed mainly of quartz (SiO₂) with iron oxides/hydroxides) — sedimentary

Weathered iron-rich sandstone or laterite

Ferruginous sandstone; potentially lateritic ironstone, composed mainly of quartz (SiO₂) with iron oxides/hydroxides

Moqui Marble (Ironstone Concretion) (Goethite-Hematite Sandstone Concretion) — sedimentary

Moqui Marble (Ironstone Concretion)

Goethite-Hematite Sandstone Concretion

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

Black Chert (Flint)

Silicon Dioxide (SiO2)

Chert (specifically Red Chert or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicon Dioxide (SiO2) permineralized organic matter) — sedimentary

Petrified Wood

Silicon Dioxide (SiO2) permineralized organic matter

Fossiliferous Limestone (containing Brachiopods) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (containing Brachiopods)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Black River Stone (likely Basalt or Chert) (Basalt (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Black River Stone (likely Basalt or Chert)

Basalt (primarily Plagioclase Feldspar and Pyroxene)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Red jasper (likely iron-rich chalcedony/jasper) (Jasper, microcrystalline quartz (SiO₂), colored mainly by hematite/goethite) — mineral

Red jasper (likely iron-rich chalcedony/jasper)

Jasper, microcrystalline quartz (SiO₂), colored mainly by hematite/goethite

Sandstone Pebble (Arenite (Siliclastic sedimentary rock)) — sedimentary

Sandstone Pebble

Arenite (Siliclastic sedimentary rock)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Painted River Rock (Anthropogenic-modified Siliciclastic Sedimentary Rock) — Sedimentary

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Iron-stained quartz or quartz-rich rock (Quartz (SiO₂), likely milky quartz with hematite/goethite staining) — mineral

Iron-stained quartz or quartz-rich rock

Quartz (SiO₂), likely milky quartz with hematite/goethite staining

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite) — metamorphic

Quartzite Pebble

Quartzite

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

Sandstone nugget

Arenite (primarily Quartz SiO2)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Muscovite Mica Schist (Metamorphic Rock (Muscovite-Biotite Schist)) — metamorphic

Muscovite Mica Schist

Metamorphic Rock (Muscovite-Biotite Schist)

Chert Geode or Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Geode or Nodule

Microcrystalline Quartz (SiO2)

Sandstone Pebble (Arenite (primarily SiO2)) — sedimentary

Sandstone Pebble

Arenite (primarily SiO2)

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

River Cobble (likely Basalt or Chert) (Basalt (Mafic volcanic rock)) — igneous

River Cobble (likely Basalt or Chert)

Basalt (Mafic volcanic rock)