Rock Identifier

Category

Organic (Biological Organism)

Browse organic (biological organism) specimens identified by the Rock Identifier community.

Learn about Organic (Biological Organism) in the encyclopedia

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Petrified Wood

Amber

Jet

Peat

Oil Shale

Pearl

Lizard Skin Jasper

Coral Rock

Opalized Wood

Fossiliferous Limestone (Bioclastic Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Bioclastic Limestone (CaCO3)

Mookaite Jasper (Silicified Radiolarite (SiO2 with iron impurities)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2 with iron impurities)

Coquina or Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Chert (Jasper variation) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Shale (Shale (Sedimentary rock composed of mud/clay minerals)) — sedimentary

Shale

Shale (Sedimentary rock composed of mud/clay minerals)

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

Travertine

Calcareous Tufa / Travertine (CaCO3)

Fossilized Shark Tooth (Chondrichthyes (Class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

Amber (Succinite (C10H16O)) — Organic Mineraloid

Amber

Succinite (C10H16O)

Organic Mineraloid

Biological Specimen (Domestic Dog) (Canis lupus familiaris) — Organic (Non-rock)

Biological Specimen (Domestic Dog)

Canis lupus familiaris

Organic (Non-rock)

Amber (Succinite (specifically for Baltic amber; general formula C10H16O)) — Mineraloid (Organic)

Amber

Succinite (specifically for Baltic amber; general formula C10H16O)

Mineraloid (Organic)

Chert (specifically Gray Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Gray Chert)

Silicon Dioxide (SiO2)

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

Fossilized Rugose Coral (Horn Coral)

Order Rugosa

Chert (Polished/Tumbled) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Polished/Tumbled)

Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Amber (Fossilized Tree Resin (Succinite for Baltic varieties)) — fossil

Amber

Fossilized Tree Resin (Succinite for Baltic varieties)

Chert (River Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (River Pebble)

Silicon Dioxide (SiO2)

Firewood (Wood Log) (Lignum (Plant tissue composed of cellulose and lignin)) — Organic (Non-geological)

Firewood (Wood Log)

Lignum (Plant tissue composed of cellulose and lignin)

Organic (Non-geological)

Aragonite (Aragonite (CaCO3)) — mineral

Aragonite

Aragonite (CaCO3)

Amber (Succinite (a specific common type) or Fossilized Tree Resin (C10H16O)) — Mineraloid

Amber

Succinite (a specific common type) or Fossilized Tree Resin (C10H16O)

Petrified Wood (Silicified Wood (primarily Quartz / Chalcedony: SiO2)) — metamorphic

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

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

Fossilized Horn Coral

Order Rugosa (Rugose Coral)

Hag Stone (Perforated Sedimentary Rock (typically Flint or Limestone)) — sedimentary

Hag Stone

Perforated Sedimentary Rock (typically Flint or Limestone)

Silty Shale or Mudstone (Siltstone/Mudstone (Clastic Sedimentary Rock)) — sedimentary

Silty Shale or Mudstone

Siltstone/Mudstone (Clastic Sedimentary Rock)

Limestone with Calcite Veining (Sedimentary Carbonate Rock (CaCO3)) — sedimentary

Limestone with Calcite Veining

Sedimentary Carbonate Rock (CaCO3)

Chert (Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2)

Chert (Iron-rich or Slate-like variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Iron-rich or Slate-like variant)

Silicon Dioxide (SiO2)

Amber (Succinicum (Organic polymer, largely C10H16O)) — Organic Mineral

Amber

Succinicum (Organic polymer, largely C10H16O)

Organic Mineral

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

Fossil Coral (Rugose Coral Fragment)

Rugosa (extinct order of solitary and colonial corals)

Limestone (Sedimentary rock composed mainly of calcite (CaCO3)) — sedimentary

Limestone

Sedimentary rock composed mainly of calcite (CaCO3)

Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (CaCO3)

Limestone Boulder (Sedimentary Rock (Calcium Carbonate, CaCO3)) — sedimentary

Limestone Boulder

Sedimentary Rock (Calcium Carbonate, CaCO3)

Orange Tabby (Felis catus) (Felis silvestris catus (variety: Red Mackerel Tabby)) — Organic/Biological specimen (Non-Mineral)

Orange Tabby (Felis catus)

Felis silvestris catus (variety: Red Mackerel Tabby)

Organic/Biological specimen (Non-Mineral)

Fossiliferous Limestone / Fossil Fragment (Calcium Carbonate (CaCO3) with indeterminate biogenic remains) — fossil

Fossiliferous Limestone / Fossil Fragment

Calcium Carbonate (CaCO3) with indeterminate biogenic remains

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

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

Black Chert (Flint)

Microcrystalline Quartz (SiO2)

Limestone (Sedimentary Rock (Primarily Calcium Carbonate, CaCO3)) — sedimentary

Limestone

Sedimentary Rock (Primarily Calcium Carbonate, CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Fossil Coral (Scleractinia (Fossilized Coral) / Calcium Carbonate (CaCO3) or Silica (SiO2)) — fossil

Fossil Coral

Scleractinia (Fossilized Coral) / Calcium Carbonate (CaCO3) or Silica (SiO2)

Fossil Coral (Honeycomb Coral) (Favosites (extinct genus of Tabulate coral)) — sedimentary

Fossil Coral (Honeycomb Coral)

Favosites (extinct genus of Tabulate coral)

Chert (Gravel pebble) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Gravel pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)