Rock Identifier

Category

Organic (Non Rock)

Browse organic (non rock) specimens identified by the Rock Identifier community.

Learn about Organic (Non Rock) in the encyclopedia

Mudstone

Bituminous Shale

Bituminous Shale

Hornfels

Black Shale

Oil Shale

Argillite

Sapropel

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicified wood (Quartz pseudomorph after wood)) — fossil

Petrified Wood

Silicified wood (Quartz pseudomorph after wood)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Diamond (Faceted) (Carbon (C)) — gemstone

Diamond (Faceted)

Carbon (C)

Petrified Wood (Silicified Wood (primarily quartz/chalcedony replacing organic wood structure)) — fossil

Petrified Wood

Silicified Wood (primarily quartz/chalcedony replacing organic wood structure)

Tumbled brown jasper (Microcrystalline quartz/chalcedony (SiO₂), commonly iron-oxide stained) — sedimentary

Tumbled brown jasper

Microcrystalline quartz/chalcedony (SiO₂), commonly iron-oxide stained

Dyed Agate (Tumbled) (Silicon Dioxide (Chalcedony variety, artificially dyed)) — gemstone

Dyed Agate (Tumbled)

Silicon Dioxide (Chalcedony variety, artificially dyed)

Chert (Jasper/Agate variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Fossilized Shark Tooth (likely Sand Tiger Shark) (Carcharias taurus (fossilized hydroxyapatite/calcium phosphate)) — fossil

Fossilized Shark Tooth (likely Sand Tiger Shark)

Carcharias taurus (fossilized hydroxyapatite/calcium phosphate)

Petrified Wood (Silicified Wood (primarily Chalcedony/Quartz, SiO2)) — fossil

Petrified Wood

Silicified Wood (primarily Chalcedony/Quartz, SiO2)

Carbonaceous Chondrite (CV3 type) (Carbonaceous Chondrite (CV3 group)) — meteorite

Carbonaceous Chondrite (CV3 type)

Carbonaceous Chondrite (CV3 group)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Fossilized Shark Tooth (Fragment) (Elasmobranchii (fossilized tooth)) — fossil

Fossilized Shark Tooth (Fragment)

Elasmobranchii (fossilized tooth)

Amber (Fossilized Tree Resin (Successite)) — fossil

Amber

Fossilized Tree Resin (Successite)

Petrified Wood (Silicified wood (Quartz, SiO2)) — fossil

Petrified Wood

Silicified wood (Quartz, SiO2)

Mookaite Jasper (Silicon Dioxide with Iron Oxide impurities (SiO2)) — mineral

Mookaite Jasper

Silicon Dioxide with Iron Oxide impurities (SiO2)

Chert (specifically Jasper or Flint type) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Flint type)

Microcrystalline Quartz (SiO2)

Tumbled chert or flint pebble (Microcrystalline quartz (SiO₂), likely chert; exact variety uncertain from the image) — sedimentary

Tumbled chert or flint pebble

Microcrystalline quartz (SiO₂), likely chert; exact variety uncertain from the image

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Quartzite (Metamorphic Quartzite (primarily SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (primarily SiO2)

Moss Agate (Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide

Turtle Stone / Septarian Nodule (Water-worn) (Septarian Concretion) — sedimentary

Turtle Stone / Septarian Nodule (Water-worn)

Septarian Concretion

Chert (specifically Flint or Common Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Common Chert)

Silicon Dioxide (SiO2)

Chert (specifically Flint or Jasperoid) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Jasperoid)

Silicon Dioxide (SiO2)

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

Chert (specifically Flint)

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Petrified Wood (Silicified wood (Quartz/Chalcedony replacement)) — fossil

Petrified Wood

Silicified wood (Quartz/Chalcedony replacement)

Tumbled amber-like inclusion (Likely amber (fossilized tree resin; complex polymer), but identification is uncertain from the image) — gemstone

Tumbled amber-like inclusion

Likely amber (fossilized tree resin; complex polymer), but identification is uncertain from the image

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

Petrified Wood

Silicified Wood (primarily SiO2)

Fossilized Mammoth Tooth Fragment (Mammuthus primigenius (or Mammuthus sp.)) — fossil

Fossilized Mammoth Tooth Fragment

Mammuthus primigenius (or Mammuthus sp.)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Fossilized Shark Tooth (Chondrichthyes (Class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

Green Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Green Chert

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert Pebble (with fossil shell fragment) (Microcrystalline Quartz (SiO2) with Calcified Invertebrate Impression) — sedimentary

Chert Pebble (with fossil shell fragment)

Microcrystalline Quartz (SiO2) with Calcified Invertebrate Impression

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

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

Chert (variations include Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Moss Agate (Cryptocrystalline Quartz (SiO2 with Manganese or Iron Oxide inclusions)) — mineral

Moss Agate

Cryptocrystalline Quartz (SiO2 with Manganese or Iron Oxide inclusions)

Amber (Succinate (Fossilized Tree Resin)) — mineraloid

Amber

Succinate (Fossilized Tree Resin)