Rock Identifier

Category

Organic Mineraloid

Browse organic mineraloid specimens identified by the Rock Identifier community.

Learn about Organic Mineraloid in the encyclopedia

Shungite

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Petrified Wood

Amber

Jet

Oil Shale

Peat

Pearl

Lizard Skin Jasper

Opalized Wood

Chert (Chalcedony/Agate Pebble) (Cryptocrystalline Silica (SiO2)) — sedimentary

Chert (Chalcedony/Agate Pebble)

Cryptocrystalline Silica (SiO2)

Chert (often called Flint or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline Quartz (SiO2)

Chert (Flint/Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint/Jasper variety)

Silicon Dioxide (SiO2)

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

Chert (Flint Nodules)

Microcrystalline Quartz (SiO2)

Red Jasper Pebble (Opaque microcrystalline Quartz (SiO2) with Iron Oxide) — sedimentary

Red Jasper Pebble

Opaque microcrystalline Quartz (SiO2) with Iron Oxide

Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert

Cryptocrystalline Quartz (SiO2)

Tumbled Jasper and Tiger's Eye (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Tumbled Jasper and Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Green Jasper) (Microcrystalline Quartz (SiO2) with iron silicate inclusions) — sedimentary

Chert (Green Jasper)

Microcrystalline Quartz (SiO2) with iron silicate inclusions

Brown Pebble (Probable Chert or Siltstone) (Silicon Dioxide (SiO2) / Sedimentary Microcrystalline Quartz) — sedimentary

Brown Pebble (Probable Chert or Siltstone)

Silicon Dioxide (SiO2) / Sedimentary Microcrystalline Quartz

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

Black Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert

Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Flint variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

Fossilized Shark Teeth (Otodus sp. (Eocene Sand Tiger/Mackerel Shark)) — fossil

Fossilized Shark Teeth

Otodus sp. (Eocene Sand Tiger/Mackerel Shark)

Chert (Microcrystalline or cryptocrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline or cryptocrystalline quartz (SiO2)

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

Chert (Nodular Chert)

Silicon Dioxide (SiO2)

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

Chert (Flint Nodules)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Cherty Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Cherty Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Shungite (Noble/Type II) (Non-crystalline carbon (Fullerene-bearing carbonaceous rock)) — metamorphic

Shungite (Noble/Type II)

Non-crystalline carbon (Fullerene-bearing carbonaceous rock)

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

Petrified Wood

Silicified Wood (primarily SiO2)

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

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Microcrystalline silica (SiO2)) — sedimentary

Chert

Microcrystalline silica (SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Chert (v. Flint) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (v. Flint)

Chert (Microcrystalline Quartz, SiO2)

Chert (containing Calcite or Quartz inclusions) (Silicon Dioxide (SiO2) with varying mineral impurities) — sedimentary

Chert (containing Calcite or Quartz inclusions)

Silicon Dioxide (SiO2) with varying mineral impurities

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

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Chert (Gravel Fragment) (Silicon dioxide (SiO2)) — sedimentary

Chert (Gravel Fragment)

Silicon dioxide (SiO2)

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

Chert (Red Jasper variant)

Microcrystalline Quartz (SiO2)

Chert (variations include Flint or Jasper) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Cryptocrystalline Quartz (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert (variant Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variant Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with Bioclasts) — sedimentary

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclasts

Chert with Limestone Cortex (Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)) — sedimentary

Chert with Limestone Cortex

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)

Amber (Succinates (Fossilized Tree Resin)) — mineral

Amber

Succinates (Fossilized Tree Resin)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

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

Chert (Jasper variation)

Silicon Dioxide (SiO2)

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

Chert (Nodule)

Chert (Silicon Dioxide, SiO2)

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Fossilized Coral (Petoskey Stone or Rugose Coral) (Antophyllum (Hexagonaria) or Scleractinia (CaCO3)) — sedimentary

Fossilized Coral (Petoskey Stone or Rugose Coral)

Antophyllum (Hexagonaria) or Scleractinia (CaCO3)

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

Chert (and Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)