Rock Identifier

Category

Organic (Paper And Cellulose)

Browse organic (paper and cellulose) specimens identified by the Rock Identifier community.

Learn about Organic (Paper And Cellulose) in the encyclopedia

Andesine

Andesite

Andalusite

Andamooka Opal

Andradite Garnet

Andradite Garnet

Andesine-Labradorite

Andesine-Labradorite

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Petrified Wood

Amber

Oil Shale

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Shark Tooth Fossil (Carcharodonta (order Lamniformes), likely Carcharias spp.) — fossil

Shark Tooth Fossil

Carcharodonta (order Lamniformes), likely Carcharias spp.

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Sandstone (Red / Iron-stained) (Sandstone (composed predominantly of SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Red / Iron-stained)

Sandstone (composed predominantly of SiO2 with Fe2O3 cement)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert (often called Flint or Jasper)

Microcrystalline Quartz (SiO2)

Chert (specifically varieties like Chalcedony or Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically varieties like Chalcedony or Flint)

Silicon Dioxide (SiO2)

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

Chert (Cherty Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Gravel)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

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

Chert (Yellow Jasper/Flint)

Silicon Dioxide (SiO2)

Amber with inclusion (Amber (Fossilized Tree Resin)) — mineral

Amber with inclusion

Amber (Fossilized Tree Resin)

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

Chert (Flint Nodules)

Chert (Silicon Dioxide, SiO2)

Chert (SiO2 (Microcrystalline Quartz)) — sedimentary

Chert

SiO2 (Microcrystalline Quartz)

Chert (often called Flint) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (often called Flint)

Chert (Cryptocrystalline Quartz, SiO2)

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

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (often called Flint)

Cryptocrystalline Quartz (SiO2)

Pyrite (Pseudomorph) (Iron Sulfide (FeS2)) — mineral

Pyrite (Pseudomorph)

Iron Sulfide (FeS2)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

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

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Chert with Iron Oxide Staining (Microcrystalline Quartz (SiO2) with Limonite/Goethite staining) — sedimentary

Chert with Iron Oxide Staining

Microcrystalline Quartz (SiO2) with Limonite/Goethite staining

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

Chert (Flint nodule)

Silicon dioxide (SiO2)

Chert (Yellow or Brown Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow or Brown Jasper)

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Microcrystalline quartz (SiO2)

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

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Chert (Flint variety) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (Flint variety)

Chert (Cryptocrystalline Quartz, SiO2)

Chert (specifically Flint Arrowhead) (Silicon dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (specifically Flint Arrowhead)

Silicon dioxide (SiO2) - Microcrystalline Quartz

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

Chert (Iron-stained)

Microcrystalline Silica (SiO2)

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

Chert (Common Jasper)

Microcrystalline Quartz (SiO2)

Banded Chert (Sedimentary Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Sedimentary Cryptocrystalline Quartz (SiO2)

Brown Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Brown Chert

Cryptocrystalline Quartz (SiO2)

Shale (possibly Carbonaceous or Oil Shale) (Laminated Mudstone (primarily clay minerals and quartz)) — sedimentary

Shale (possibly Carbonaceous or Oil Shale)

Laminated Mudstone (primarily clay minerals and quartz)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicon Dioxide (SiO2)) — fossil

Petrified Wood

Silicon Dioxide (SiO2)

Fossiliferous Limestone (Bioclastic Limestone (composition: CaCO3)) — sedimentary

Fossiliferous Limestone

Bioclastic Limestone (composition: CaCO3)

Petrified Wood (Silicified Wood (Permineralized Lycopsid, Conifer, or Hardwood)) — fossil

Petrified Wood

Silicified Wood (Permineralized Lycopsid, Conifer, or Hardwood)