Rock Identifier

Category

Sedimentary Rock (Metamorphosed)

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

Sandstone (with carbonaceous plant fragments) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (with carbonaceous plant fragments)

Arenite (composed primarily of SiO2)

Sandstone (likely Arkosic) (Clastic Sedimentary Rock) — sedimentary

Sandstone (likely Arkosic)

Clastic Sedimentary Rock

Hag Stone (Perforated Sedimentary Rock) — sedimentary

Hag Stone

Perforated Sedimentary Rock

Sandstone (likely Siltstone or fine-grained Sandstone) (Sedimentary Rock (Clastic)) — sedimentary

Sandstone (likely Siltstone or fine-grained Sandstone)

Sedimentary Rock (Clastic)

Shale or Siltstone (Sedimentary Rock (Siliciclastic)) — sedimentary

Shale or Siltstone

Sedimentary Rock (Siliciclastic)

Siltstone or Mudstone (Argillaceous sedimentary rock) — sedimentary

Siltstone or Mudstone

Argillaceous sedimentary rock

Silty Shale (Silty Shale (Fissile Sedimentary Rock)) — sedimentary

Silty Shale

Silty Shale (Fissile Sedimentary Rock)

Shale (Ferruginous) (Laminated Mudrock (Siliciclastic Sedimentary Rock)) — sedimentary

Shale (Ferruginous)

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Shale (Mudstone (composed primarily of clay minerals like kaolinite, illite, and smectite, with quartz and calcite)) — sedimentary

Shale

Mudstone (composed primarily of clay minerals like kaolinite, illite, and smectite, with quartz and calcite)

Sandstone (with Iron Staining) (Clastic sedimentary rock (SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 oxides)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Garnet Schist (Garnetiferous Micaceous Schist) — metamorphic

Garnet Schist

Garnetiferous Micaceous Schist

Conglomerate (Polymictic Conglomerate) — sedimentary

Conglomerate

Polymictic Conglomerate

Sandstone (likely Greywacke or Lithic Sandstone) (Arenite / Wacke) — sedimentary

Sandstone (likely Greywacke or Lithic Sandstone)

Arenite / Wacke

Devil's Toenail (Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)) — sedimentary

Devil's Toenail

Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)

Smoky Quartz and Chalcedony Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz and Chalcedony Geode Fragment

Silicon Dioxide (SiO2)

Sandstone with Quartz Vein (Arenite with SiO2 intrusion) — sedimentary

Sandstone with Quartz Vein

Arenite with SiO2 intrusion

Chert (Chert / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Shale (Argillaceous Rock) — sedimentary

Shale

Argillaceous Rock

Agate (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Agate (specifically a Yellow/Honey Agate) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate (specifically a Yellow/Honey Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Sandstone

Arenite (primarily composed of SiO2)

Sandstone (Arenite (Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Sedimentary Rock)

Conglomerate (Conglomerative Sedimentary Rock) — sedimentary

Conglomerate

Conglomerative Sedimentary Rock

Conglomerate (Conglomerate (Sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary rock)

Conglomerate (or Breccia) (Clastic Sedimentary Rock) — sedimentary

Conglomerate (or Breccia)

Clastic Sedimentary Rock

River Pebble (Siltstone/Mudstone) (Clastic sedimentary rock) — sedimentary

River Pebble (Siltstone/Mudstone)

Clastic sedimentary rock

Sandstone (likely Graywacke or Lithic Sandstone) (Clastic Sedimentary Rock) — sedimentary

Sandstone (likely Graywacke or Lithic Sandstone)

Clastic Sedimentary Rock

River Rock (likely Siltstone or fine-grained Sandstone) (Clastic Sedimentary Rock) — sedimentary

River Rock (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock

Shale (Lutaceous Sedimentary Rock) — sedimentary

Shale

Lutaceous Sedimentary Rock

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Conglomerate (Conglomerate (a clastic sedimentary rock)) — Sedimentary Rock

Conglomerate

Conglomerate (a clastic sedimentary rock)

Sedimentary Rock

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

River Rocks (Basalt and Sedimentary Stones) (Mafic Igneous Rock (Basalt) and Clastic Sedimentary Rock) — igneous and sedimentary

River Rocks (Basalt and Sedimentary Stones)

Mafic Igneous Rock (Basalt) and Clastic Sedimentary Rock

igneous and sedimentary

Sedimentary rock with quartz veining (Laminated siltstone or mudstone with hydrothermal quartz veins) — sedimentary

Sedimentary rock with quartz veining

Laminated siltstone or mudstone with hydrothermal quartz veins

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Fossil Bivalve Shell (Class Bivalvia (e.g., Veneriidae family)) — sedimentary

Fossil Bivalve Shell

Class Bivalvia (e.g., Veneriidae family)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Iron Oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Iron Oxide cement)

Shale (Fissile Mudstone) — sedimentary

Shale

Fissile Mudstone