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

Likely biotite schist or mica-rich metamorphic rock (Mica schist, predominantly biotite mica with quartz and feldspar) — metamorphic

Likely biotite schist or mica-rich metamorphic rock

Mica schist, predominantly biotite mica with quartz and feldspar

Conglomerate (Clastic Sedimentary (Conglomerate)) — sedimentary

Conglomerate

Clastic Sedimentary (Conglomerate)

Kambaba Jasper (Stromatolite / Fossilized Algae (Rhyolitic structure)) — sedimentary

Kambaba Jasper

Stromatolite / Fossilized Algae (Rhyolitic structure)

Quartz with Inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz with Inclusions

Silicon Dioxide (SiO2)

Quartz (Pink / Rose Quartz variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Pink / Rose Quartz variant)

Silicon Dioxide (SiO2)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Red Calcite (Calcium Carbonate (CaCO3)) — mineral

Red Calcite

Calcium Carbonate (CaCO3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Hematite (Iron Oxide (Fe2O3)) — mineral

Hematite

Iron Oxide (Fe2O3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Rhodochrosite (Rhodochrosite, Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Rhodochrosite, Manganese Carbonate (MnCO3)

Pyrite in Matrix (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix (Fool's Gold)

Iron Sulfide (FeS2)

Fossil Shark Tooth (Elasmobranchii (Lamniformes order likely)) — fossil

Fossil Shark Tooth

Elasmobranchii (Lamniformes order likely)

Black Jasper (Black Stone / River Pebble) (Silicon Dioxide (SiO₂), Opaque variety of Chalcedony) — sedimentary

Black Jasper (Black Stone / River Pebble)

Silicon Dioxide (SiO₂), Opaque variety of Chalcedony

Dalmation Stone (Peralkaline Rock (Microcline Quartz mixture with Arfvedsonite)) — igneous

Dalmation Stone

Peralkaline Rock (Microcline Quartz mixture with Arfvedsonite)

Conglomerate (Clastic Sedimentary Rock (Conglomerate)) — sedimentary

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Chert (Limestone-based) (Silicon Dioxide (SiO2) within Carbonate host) — sedimentary

Chert (Limestone-based)

Silicon Dioxide (SiO2) within Carbonate host

Chert (Limestone-based) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Limestone-based)

Silicon Dioxide (SiO2)

Siltstone with Fossil Cast (Sedimentary Rock (Siltstone / Fine-grained Sandstone)) — sedimentary

Siltstone with Fossil Cast

Sedimentary Rock (Siltstone / Fine-grained Sandstone)

Fossilized Coral (Favosites) (Favosites goldfussi) — fossil

Fossilized Coral (Favosites)

Favosites goldfussi

Dalmatian Stone (Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)) — igneous

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Chert (Jasper) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline quartz (SiO2)

Gneiss (River Cobble) (Metamorphic Gneiss) — metamorphic

Gneiss (River Cobble)

Metamorphic Gneiss

Mica Schist (Mica Schist (predominantly Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

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

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

River Cobble (Sandstone) (Arenite (primarily SiO2)) — sedimentary

River Cobble (Sandstone)

Arenite (primarily SiO2)

Zoisite with Rubellite (Ruby in Zoisite) (Zoisite with inclusions of Hornblende (Anyolite)) — metamorphic

Zoisite with Rubellite (Ruby in Zoisite)

Zoisite with inclusions of Hornblende (Anyolite)

Limestone (Weathered) (Sedimentary carbonate rock, primarily calcium carbonate (CaCO3)) — sedimentary

Limestone (Weathered)

Sedimentary carbonate rock, primarily calcium carbonate (CaCO3)

Chert (Nodule) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Siltstone (Siltstone (primarily SiO2 with Al2O3)) — sedimentary

Siltstone

Siltstone (primarily SiO2 with Al2O3)

Conglomerate (Conglomerate Rock) — sedimentary

Conglomerate

Conglomerate Rock

Sandstone (Lithic Wacke) (Clastic sedimentary rock (primarily SiO2 with rock fragments)) — sedimentary

Sandstone (Lithic Wacke)

Clastic sedimentary rock (primarily SiO2 with rock fragments)

Limestone (Limestone (Calcium Carbonate: CaCO3)) — sedimentary

Limestone

Limestone (Calcium Carbonate: CaCO3)

Limestone (Weathered) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Weathered)

Calcium Carbonate (CaCO3)

Mica Schist (Mica Schist (primarily Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Magnetite (Iron Ore) (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite (Iron Ore)

Iron(II,III) oxide (Fe3O4)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Calcite (CaCO3) matrix with biogenic fragments) — sedimentary

Fossiliferous Limestone

Calcite (CaCO3) matrix with biogenic fragments