Rock Identifier

Category

Sedimentary Or Metamorphic (Base Substrate)

Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.

Learn about Sedimentary Or Metamorphic (Base Substrate) in the encyclopedia

Sard

White Obsidian

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Hornfels

Ironstone

Anthracite

Metaquartzite

Slate

Dendritic Agate (Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)) — mineral

Dendritic Agate

Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)

Dinosaur Claw (Dromaeosaurid) (Dromaeosaurid ungual (potential Deinonychus or Velociraptorine)) — fossil

Dinosaur Claw (Dromaeosaurid)

Dromaeosaurid ungual (potential Deinonychus or Velociraptorine)

Ferruginous Sandstone (River Pebble) (Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 cement)) — sedimentary

Ferruginous Sandstone (River Pebble)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 cement)

Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

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

Sandstone (River Stone)

Arenite (composed primarily of SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (likely Graywacke or Siltstone variety) (Clastic Sedimentary Rock (SiO2 with assorted mineral fragments)) — sedimentary

Sandstone (likely Graywacke or Siltstone variety)

Clastic Sedimentary Rock (SiO2 with assorted mineral fragments)

Fossilized Favosites (Honeycomb Coral) (Favosites (extinct genus of tabulate coral)) — sedimentary

Fossilized Favosites (Honeycomb Coral)

Favosites (extinct genus of tabulate coral)

Fossil Coral (Rugose Coral) (Rugosa (extinct order of solitary and colonial corals)) — sedimentary

Fossil Coral (Rugose Coral)

Rugosa (extinct order of solitary and colonial corals)

Fossiliferous Shale (Laminated Mudrock with plant fossils) — sedimentary

Fossiliferous Shale

Laminated Mudrock with plant fossils

Gastropod Fossil (Snail Internal Cast) (Class Gastropoda (Steinkern)) — sedimentary

Gastropod Fossil (Snail Internal Cast)

Class Gastropoda (Steinkern)

Sandstone (likely Ferruginous) (Sandstone (SiO2 with iron oxides)) — sedimentary

Sandstone (likely Ferruginous)

Sandstone (SiO2 with iron oxides)

Fossilized Coral (Petoskey-like or Favosites) (Anthozoa (Fossilized Coral)) — sedimentary

Fossilized Coral (Petoskey-like or Favosites)

Anthozoa (Fossilized Coral)

Limestone (specifically Fossiliferous Limestone) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (specifically Fossiliferous Limestone)

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Unknown White Specimen (Unidentifiable due to blurriness) — mineral

Unknown White Specimen

Unidentifiable due to blurriness

Conglomerate (Conglomerate) — sedimentary

Conglomerate

Conglomerate

Sandstone (Red) (Arenite (primarily Quartz, SiO2, with Iron Oxide cement)) — sedimentary

Sandstone (Red)

Arenite (primarily Quartz, SiO2, with Iron Oxide cement)

Fossilized Coral (Petoskey Stone type) (Hexagonaria percarinata (Order: Rugosa)) — sedimentary

Fossilized Coral (Petoskey Stone type)

Hexagonaria percarinata (Order: Rugosa)

Red Sandstone (Iron-Rich) (Arenite (Fe2O3)) — sedimentary

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Concrete / Conglomerate (Man-made) (Artificial Conglomerate (Cementitious Composite)) — sedimentary

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Fossilized Tabulate Coral (Honeycomb Coral) (Favosites (Order: Tabulata)) — sedimentary

Fossilized Tabulate Coral (Honeycomb Coral)

Favosites (Order: Tabulata)

Fossilized Brachiopod (Brachiopoda (likely Order Spiriferida or Productida)) — sedimentary

Fossilized Brachiopod

Brachiopoda (likely Order Spiriferida or Productida)

Shale (possibly Carbonaceous or Oil Shale) (Laminated Mudstone (primarily clay minerals and quartz)) — sedimentary

Shale (possibly Carbonaceous or Oil Shale)

Laminated Mudstone (primarily clay minerals and quartz)

Limestone with Algal/Lichen Colonization (Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Algal/Lichen Colonization

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)

Brecciated Chert (Sedimentary Chert (SiO2) with Calc-Silicate mineralization) — sedimentary

Brecciated Chert

Sedimentary Chert (SiO2) with Calc-Silicate mineralization

Sandstone (Arkose/Quartzose) (Arenite (SiO2 based clastic rock)) — sedimentary

Sandstone (Arkose/Quartzose)

Arenite (SiO2 based clastic rock)

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

Chert

Chert (Microcrystalline Quartz, SiO2)

Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Green Banded Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Green Banded Calcite

Calcite (Calcium Carbonate, CaCO3)

Conglomerate (Conglomerate Rock (Paraconglomerate)) — sedimentary

Conglomerate

Conglomerate Rock (Paraconglomerate)

Fossiliferous Limestone (Biomicrite / Limestone with fossils) — sedimentary

Fossiliferous Limestone

Biomicrite / Limestone with fossils

Crushed Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Crushed Limestone

Calcium Carbonate (CaCO3)