Rock Identifier

Category

Organic Material

Browse organic material specimens identified by the Rock Identifier community.

Learn about Organic Material in the encyclopedia

Peat

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Petrified Wood

Amber

Jet

Oil Shale

Pearl

Lizard Skin Jasper

Dunite

Opalized Wood

Amber (Succiniferous organic material (Succinite)) — fossil

Amber

Succiniferous organic material (Succinite)

Amber (Succinite) — Mineraloid

Amber

Succinite

Travertine (Terrestrial Sedimentary Limestone (CaCO3)) — sedimentary

Travertine

Terrestrial Sedimentary Limestone (CaCO3)

Amber (Green variation) (Succinite) — fossil

Amber (Green variation)

Succinite

Fossiliferous Chert (with Fossil Shells) (Silicon Dioxide (SiO2) with biogenic inclusions) — sedimentary

Fossiliferous Chert (with Fossil Shells)

Silicon Dioxide (SiO2) with biogenic inclusions

Travertine (Calcareous Tufa / Travertine (CaCO3)) — sedimentary

Travertine

Calcareous Tufa / Travertine (CaCO3)

Chert (varieties include Flint and Jasper) (Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Slate (Slate (foliated metamorphic rock, primarily composed of quartz, illite, chlorite, and micas)) — metamorphic

Slate

Slate (foliated metamorphic rock, primarily composed of quartz, illite, chlorite, and micas)

Calcite-rich limestone (Limestone, predominantly calcium carbonate (CaCO₃), usually calcite) — sedimentary

Calcite-rich limestone

Limestone, predominantly calcium carbonate (CaCO₃), usually calcite

Ambergris (Geological/Organic Specimen) (Ambra grisea (Produced by Physeter macrocephalus)) — organic material

Ambergris (Geological/Organic Specimen)

Ambra grisea (Produced by Physeter macrocephalus)

organic material

Dinosaur Claw Fossil (Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)) — fossil

Dinosaur Claw Fossil

Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)

Brown translucent mineral fragment, possibly iron-stained quartz or amber (Uncertain; likely quartz (SiO₂) with iron-oxide staining, though amber (fossilized resin) is possible) — mineral

Brown translucent mineral fragment, possibly iron-stained quartz or amber

Uncertain; likely quartz (SiO₂) with iron-oxide staining, though amber (fossilized resin) is possible

Amber (Succinite / Fossilized Resin (C10H16O)) — fossil

Amber

Succinite / Fossilized Resin (C10H16O)

Polished fossilized wood (petrified wood), likely agatized (Silicified wood; predominantly microcrystalline quartz/chalcedony (SiO₂), with iron-oxide coloration) — fossil

Polished fossilized wood (petrified wood), likely agatized

Silicified wood; predominantly microcrystalline quartz/chalcedony (SiO₂), with iron-oxide coloration

Fossiliferous Flint (Microcrystalline Quartz (SiO2) with Echinoid Fossil) — sedimentary

Fossiliferous Flint

Microcrystalline Quartz (SiO2) with Echinoid Fossil

Tumbled chalcedony (likely moss or dendritic agate) (Microcrystalline quartz, SiO₂, with iron-oxide inclusions) — mineral

Tumbled chalcedony (likely moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron-oxide inclusions

Shark Tooth Fossil (Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)) — fossil

Shark Tooth Fossil

Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)

Baltic Amber (Succinite (Fossilized Resin)) — fossil

Baltic Amber

Succinite (Fossilized Resin)

Petrified Wood (Silicified Wood (Permineralized wood)) — fossil

Petrified Wood

Silicified Wood (Permineralized wood)

Tumbled amber (likely) (Amber; fossilized plant resin, commonly succinite (organic material rather than a mineral)) — gemstone

Tumbled amber (likely)

Amber; fossilized plant resin, commonly succinite (organic material rather than a mineral)

Amber (Succinite (fossilized resin, C10H16O)) — mineral

Amber

Succinite (fossilized resin, C10H16O)

Flint (chert), likely brown flint (Microcrystalline quartz/chalcedony (SiO₂)) — sedimentary

Flint (chert), likely brown flint

Microcrystalline quartz/chalcedony (SiO₂)

Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

Petrified wood (polished/cut slab) (Silicified fossil wood, commonly quartz/chalcedony (SiO₂) replacing wood tissue) — fossil

Petrified wood (polished/cut slab)

Silicified fossil wood, commonly quartz/chalcedony (SiO₂) replacing wood tissue

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Fossiliferous Limestone / Petrifaction (Sedimentary rock with fossil inclusions / Calcium Carbonate (CaCO3)) — fossil

Fossiliferous Limestone / Petrifaction

Sedimentary rock with fossil inclusions / Calcium Carbonate (CaCO3)

Polished plume agate (Chalcedony (microcrystalline SiO₂) with iron-oxide inclusions) — mineral

Polished plume agate

Chalcedony (microcrystalline SiO₂) with iron-oxide inclusions

Fossilized Shark Tooth (Selachimorpha fossil) — fossil

Fossilized Shark Tooth

Selachimorpha fossil

Raw Amber / Resin Mineral (Succinite (Fossilized Tree Resin)) — gemstone

Raw Amber / Resin Mineral

Succinite (Fossilized Tree Resin)

Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

Amber (Succinited (fossilized tree resin)) — fossil

Amber

Succinited (fossilized tree resin)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Polished chalcedony (likely moss/ag ate) (Microcrystalline quartz, SiO₂; probable moss agate or jasper variety) — mineral

Polished chalcedony (likely moss/ag ate)

Microcrystalline quartz, SiO₂; probable moss agate or jasper variety

Rounded limestone or dolostone pebble (Calcite-rich limestone (CaCO₃), possibly dolostone (CaMg(CO₃)₂)) — sedimentary

Rounded limestone or dolostone pebble

Calcite-rich limestone (CaCO₃), possibly dolostone (CaMg(CO₃)₂)

Gastropod Fossil (Snail Steinkern) (Class Gastropoda (internal mold)) — sedimentary

Gastropod Fossil (Snail Steinkern)

Class Gastropoda (internal mold)

Petrified Wood (Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)) — sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)

Dalmatian jasper (often sold as Dalmatian stone) (Quartz-bearing leucocratic alkali-feldspar–aegirine/arfvedsonite porphyritic rock; commercial “jasper” designation) — igneous

Dalmatian jasper (often sold as Dalmatian stone)

Quartz-bearing leucocratic alkali-feldspar–aegirine/arfvedsonite porphyritic rock; commercial “jasper” designation