Rock Identifier

Category

Organic Material

Browse organic material specimens identified by the Rock Identifier community.

Learn about Organic Material in the encyclopedia

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Peat

Peat

Sapropel

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Black Shale

Petrified Wood

Petrified Wood

Amber

Amber

Jet

Oil Shale

Oil Shale

Pearl

Lizard Skin Jasper

Dunite

Dunite

Opalized Wood

Opalized Wood

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Tumbled Red Jasper (Quartz (Microcrystalline variety of chalcedony, SiO2)) — mineral

Tumbled Red Jasper

Quartz (Microcrystalline variety of chalcedony, SiO2)

mineral
Fossil Shark Tooth (Selachii fossil) — fossil

Fossil Shark Tooth

Selachii fossil

fossil
Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

sedimentary
Mammoth Tooth (Mammuthus tooth) — fossil

Mammoth Tooth

Mammuthus tooth

fossil
Jasper (Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)

sedimentary
Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

sedimentary
Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Jasper

Microcrystalline Quartz (Chalcedony), SiO2

sedimentary
Fossilized Tooth (Vertebrate Fossilized Tooth (Mineralized Biogenic Material)) — fossil

Fossilized Tooth

Vertebrate Fossilized Tooth (Mineralized Biogenic Material)

fossil
Chert (Silicon dioxide (SiO2)) — Sedimentary

Chert

Silicon dioxide (SiO2)

Sedimentary
Chert (Flint) (SiO2 (Microcrystalline Quartz)) — sedimentary

Chert (Flint)

SiO2 (Microcrystalline Quartz)

sedimentary
Honey calcite (likely) (Calcite, calcium carbonate (CaCO₃)) — mineral

Honey calcite (likely)

Calcite, calcium carbonate (CaCO₃)

mineral
Fossilized bone fragment, possibly dinosaur or large mammal bone (Fossil bone; mineralized apatite (carbonate-fluorapatite), commonly Ca₅(PO₄)₃(F,OH)) — fossil

Fossilized bone fragment, possibly dinosaur or large mammal bone

Fossil bone; mineralized apatite (carbonate-fluorapatite), commonly Ca₅(PO₄)₃(F,OH)

fossil
Tumbled honey-colored calcite (Calcite (calcium carbonate, CaCO₃)) — mineral

Tumbled honey-colored calcite

Calcite (calcium carbonate, CaCO₃)

mineral
Quartzite Pebble with Pyrite Coating (SiO2 (Quartz) with FeS2 (Pyrite) inclusions or surface coating) — metamorphic

Quartzite Pebble with Pyrite Coating

SiO2 (Quartz) with FeS2 (Pyrite) inclusions or surface coating

metamorphic
Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Chert (Jasper/Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Chalcedony)

Microcrystalline Quartz (SiO2)

sedimentary
Bituminous Coal (with Anthracite or Vitrinite inclusion) (Organic-rich Sedimentary Rock (Carboniferous classification)) — sedimentary

Bituminous Coal (with Anthracite or Vitrinite inclusion)

Organic-rich Sedimentary Rock (Carboniferous classification)

sedimentary
Chert Nodule in Limestone (Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)) — sedimentary

Chert Nodule in Limestone

Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Fossilized Bivalve (Phylum Mollusca, Class Bivalvia) — fossil

Fossilized Bivalve

Phylum Mollusca, Class Bivalvia

fossil
Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

sedimentary
Sandstone (Sandstone (SiO2-dominated clastic rock)) — sedimentary

Sandstone

Sandstone (SiO2-dominated clastic rock)

sedimentary
Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

sedimentary
Jasper (Silicon dioxide (Microcrystalline quartz, SiO2)) — mineral

Jasper

Silicon dioxide (Microcrystalline quartz, SiO2)

mineral
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Fossilized Nut / Coprolite / Concretion (Trace Fossil / Permineralized Plant Material) — fossil

Fossilized Nut / Coprolite / Concretion

Trace Fossil / Permineralized Plant Material

fossil
Chert (Jasper) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon dioxide (SiO2)

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

Chert (Flint)

Chert (SiO2)

sedimentary
Sandstone (Sandstone (Siliciclastic Sedimentary Rock)) — sedimentary

Sandstone

Sandstone (Siliciclastic Sedimentary Rock)

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

Red Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Jasper (Microcrystalline Quartz (SiO2)) — gemstone

Jasper

Microcrystalline Quartz (SiO2)

gemstone
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

mineral