Rock Identifier

Category

Organic (Sedimentary Context)

Browse organic (sedimentary context) specimens identified by the Rock Identifier community.

Learn about Organic (Sedimentary Context) in the encyclopedia

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Oil Shale

Chert (Yellow Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Chert (Flint Nodules) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint Nodules)

Silicon Dioxide (SiO2)

Glauconite Sandstone (Glauconitic Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)) — sedimentary

Glauconite Sandstone

Glauconitic Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)

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

Chert (Nodule)

Chert (Silicon Dioxide, SiO2)

Amber (Succinite (specifically for Baltic Amber), Formula: C10H16O) — Organic Gemstone (often associated with Sedimentary sequences)

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Organic Gemstone (often associated with Sedimentary sequences)

Fossilized Shark Tooth (Eroded) (Carcharodon sp. or Otodus sp. fragment (likely)) — fossil

Fossilized Shark Tooth (Eroded)

Carcharodon sp. or Otodus sp. fragment (likely)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Graphite (Graphite (Chemical Formula: C)) — Mineral (Native Element)

Graphite

Graphite (Chemical Formula: C)

Mineral (Native Element)

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

Chert (Jasper)

Silicon Dioxide (SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Coal (Bituminous) (Organic sedimentary rock primarily consisting of carbon (C)) — sedimentary

Coal (Bituminous)

Organic sedimentary rock primarily consisting of carbon (C)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite (SiO2 composed primarily of quartz)) — sedimentary

Sandstone

Arenite (SiO2 composed primarily of quartz)

Chert (potentially worked flint) (Cryptocrystalline microcrystalline quartz (SiO2)) — sedimentary

Chert (potentially worked flint)

Cryptocrystalline microcrystalline quartz (SiO2)

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

Fossiliferous Limestone

Calcite (CaCO3) matrix with biogenic fragments

Chert (River Pebble) (Microcrystalline silica (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline silica (SiO2)

Chert (River Pebble) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline Silica (SiO2)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

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

Chert (Honey Chert / Flint)

Silicon Dioxide (SiO2)

Chert (varieties: Flint, Jasper) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (varieties: Flint, Jasper)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (often called Flint) (Chert (SiO2)) — sedimentary

Chert (often called Flint)

Chert (SiO2)

Chert (Nodule) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Nodule)

Chert (Cryptocrystalline Silica, SiO2)

Chert with Quartz Vein (Silicon dioxide (SiO2)) — sedimentary

Chert with Quartz Vein

Silicon dioxide (SiO2)

Chert (Jasper/Flint variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Fairy Stone (Menilite Concretion) (Carbonate-rich concretion (often Siderite or Calcite in Clay)) — sedimentary

Fairy Stone (Menilite Concretion)

Carbonate-rich concretion (often Siderite or Calcite in Clay)

Glauconitic Sandstone (Glauconitic Quartz Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)) — sedimentary

Glauconitic Sandstone

Glauconitic Quartz Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)

Chert (Flint) (Silicon dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon dioxide (SiO2)

Chert (Yellow Jasper/Flint) (Silicon dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (Yellow Jasper/Flint)

Silicon dioxide (SiO2) - Cryptocrystalline Quartz

Chert Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble

Microcrystalline Quartz (SiO2)

Chert (Nodule/Common Chert) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Nodule/Common Chert)

Microcrystalline quartz (SiO2)

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

Chert (Flint Pebbles)

Microcrystalline Quartz (SiO2)

Fossilized Shell in Limestone (Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock) — sedimentary

Fossilized Shell in Limestone

Bivalve fossil (CaCO3) in Carbonate Sedimentary Rock

Banded Chert (River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert (River Pebble)

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert (Brown Variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Brown Variety)

Microcrystalline quartz (SiO2)

Chert / Microcrystalline Quartz (Silicon Dioxide (SiO2)) — sedimentary

Chert / Microcrystalline Quartz

Silicon Dioxide (SiO2)

Dragon Blood Jasper (Epidote with Red Piedmontite (Chalcedony/Quartz variant)) — sedimentary

Dragon Blood Jasper

Epidote with Red Piedmontite (Chalcedony/Quartz variant)

Chert / Flint (Silicon dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon dioxide (SiO2)

Chert (with Limestone/Marble traces) (Silicon Dioxide (SiO2) / Microcrystalline Quartz) — sedimentary

Chert (with Limestone/Marble traces)

Silicon Dioxide (SiO2) / Microcrystalline Quartz

Dendritic Agate (Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions) — sedimentary

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions

Chert (Holey Stone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Holey Stone)

Microcrystalline Quartz (SiO2)

Ironstone Concretion (Limonite/Goethite) (Goethite/Limonite concretion (FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion (Limonite/Goethite)

Goethite/Limonite concretion (FeO(OH)·nH2O)