Rock Identifier

Category

Sedimentary (Biogenic Sediment Or Biological Remain)

Browse sedimentary (biogenic sediment or biological remain) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Biogenic Sediment Or Biological Remain) in the encyclopedia

Sapropel

Claystone

Phosphorite

Diatomite

Turbidite

Quartzite Sandstone

Quartzite Sandstone

Conglomerate

Ironstone

Breccia

Tripolite

Bituminous Shale

Bituminous Shale

Kambaba Jasper

Lepidodendron fossil (Scale Tree Bark) (Lepidodendron (Lycophytina class)) — sedimentary

Lepidodendron fossil (Scale Tree Bark)

Lepidodendron (Lycophytina class)

Petoskey Stone (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

Tumbled banded sandstone pebble (Quartz-rich sandstone (chiefly SiO₂), likely iron-oxide-stained) — sedimentary

Tumbled banded sandstone pebble

Quartz-rich sandstone (chiefly SiO₂), likely iron-oxide-stained

Iron-rich quartzite or weathered ironstone pebble (Quartzite, chiefly SiO₂, with iron-oxide minerals (hematite/goethite)) — metamorphic

Iron-rich quartzite or weathered ironstone pebble

Quartzite, chiefly SiO₂, with iron-oxide minerals (hematite/goethite)

Fossilized Shark Tooth (Fragment) (Elasmobranchii gen. et sp. indet.) — fossil

Fossilized Shark Tooth (Fragment)

Elasmobranchii gen. et sp. indet.

Fossilized Sand Dollar (Echinoidea (Clypeasteroida)) — fossil

Fossilized Sand Dollar

Echinoidea (Clypeasteroida)

Chert or heavily weathered flint (Microcrystalline quartz (SiO₂), likely chert/flint) — sedimentary

Chert or heavily weathered flint

Microcrystalline quartz (SiO₂), likely chert/flint

Iron-rich weathered stone, possibly hematite-rich ironstone (Hematite/goethite-bearing ironstone; predominantly Fe₂O₃ and FeO(OH)) — mineral

Iron-rich weathered stone, possibly hematite-rich ironstone

Hematite/goethite-bearing ironstone; predominantly Fe₂O₃ and FeO(OH)

Petrified Wood (Silicified Wood (Permineralized Lycopsid, Conifer, or Hardwood)) — fossil

Petrified Wood

Silicified Wood (Permineralized Lycopsid, Conifer, or Hardwood)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Sandstone Concretion (Clastic sedimentary rock (primarily Silica, SiO2, or Calcium Carbonate, CaCO3)) — sedimentary

Sandstone Concretion

Clastic sedimentary rock (primarily Silica, SiO2, or Calcium Carbonate, CaCO3)

Banded Sandstone / Siltstone (Sedimentary Rock (Quartzose Sandstone / Siltstone)) — sedimentary

Banded Sandstone / Siltstone

Sedimentary Rock (Quartzose Sandstone / Siltstone)

Concretionary limestone or calcarenite pebble (Micritic limestone/calcarenite, primarily calcite (CaCO₃)) — sedimentary

Concretionary limestone or calcarenite pebble

Micritic limestone/calcarenite, primarily calcite (CaCO₃)

Weathered quartz-rich sandstone or granitic rock (Indeterminate; likely iron-stained quartz sandstone, possibly weathered granite) — sedimentary

Weathered quartz-rich sandstone or granitic rock

Indeterminate; likely iron-stained quartz sandstone, possibly weathered granite

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions

Petrified Wood (Silicified wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified wood (primarily SiO2)

Quartz-veined Siltstone/Greywacke (Clastic Sedimentary Rock with Quartz Infill (SiO2 vein)) — sedimentary

Quartz-veined Siltstone/Greywacke

Clastic Sedimentary Rock with Quartz Infill (SiO2 vein)

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)

Bumble Bee Jasper (Calcite-bearing Volcanic Tuff (not a true Jasper)) — sedimentary

Bumble Bee Jasper

Calcite-bearing Volcanic Tuff (not a true Jasper)

Jasper (Iron Oxide Rich) (Silicon Dioxide (SiO2) with Fe2O3 (Hematite/Goethite) inclusions) — sedimentary

Jasper (Iron Oxide Rich)

Silicon Dioxide (SiO2) with Fe2O3 (Hematite/Goethite) inclusions

Greywhacke (River Pebble) (Graywacke (immature sandstone)) — sedimentary

Greywhacke (River Pebble)

Graywacke (immature sandstone)

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite or Iron Oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Iron Oxide inclusions

Dendritic Jasper (Bumblebee like Agate) (Silicon Dioxide with inclusions (SiO2)) — sedimentary

Dendritic Jasper (Bumblebee like Agate)

Silicon Dioxide with inclusions (SiO2)

Fossilized Rugose Coral (Horn Coral) (Order Rugosa) — sedimentary

Fossilized Rugose Coral (Horn Coral)

Order Rugosa

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Concretion (Septarian Concretion (Fragmentary)) — sedimentary

Concretion

Septarian Concretion (Fragmentary)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert Nodule (Microcrystalline Silica (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Silica (SiO2)

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2)

Fossilized Coral (Petrified Coral) (Anthozoa (Scleractinia)) — sedimentary

Fossilized Coral (Petrified Coral)

Anthozoa (Scleractinia)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

Ocean Jasper (Orbicular Jasper (Silicon Dioxide - SiO2)) — sedimentary

Ocean Jasper

Orbicular Jasper (Silicon Dioxide - SiO2)

Fossilized Coral (Rugose Coral / Hexagonaria (Fossilized calcium carbonate)) — fossil

Fossilized Coral

Rugose Coral / Hexagonaria (Fossilized calcium carbonate)

Siltstone with Quartz Vein (Siltstone (composed of Quartz and Clay minerals) with a hydrothermal Quartz vein (SiO2)) — sedimentary

Siltstone with Quartz Vein

Siltstone (composed of Quartz and Clay minerals) with a hydrothermal Quartz vein (SiO2)

Flint pebble (Chert / Flint (SiO2)) — Sedimentary

Flint pebble

Chert / Flint (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Chert / Chalcedony Nodules (Silicon Dioxide (SiO2)) — sedimentary

Chert / Chalcedony Nodules

Silicon Dioxide (SiO2)