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

View all →
Mudstone

Mudstone

Bituminous Shale

Bituminous Shale

Hornfels

Hornfels

Black Shale

Black Shale

Oil Shale

Oil Shale

Argillite

Argillite

Sapropel

Sapropel

Quartz Vein / Quartzite with Iron Oxide Staining (Silicon Dioxide (SiO2)) — mineral

Quartz Vein / Quartzite with Iron Oxide Staining

Silicon Dioxide (SiO2)

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

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, SiO2)

fossil
Engineered Quartz (Silicon dioxide composite) — manufactured stone

Engineered Quartz

Silicon dioxide composite

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Chert (Arrowhead Artifact) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead Artifact)

Microcrystalline Quartz (SiO2)

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

Chert Nodule

Microcrystalline Quartz (SiO2)

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

Chert / Flint

Silicon Dioxide (SiO2)

sedimentary
Quartz and Limestone Grouping (Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)) — mineral

Quartz and Limestone Grouping

Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)

mineral
Chert (Flint / Jasper / Hornstone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint / Jasper / Hornstone)

Microcrystalline Quartz (SiO2)

sedimentary
Petrified Wood (Agatized/Silicified Wood) (Silicified Paleoxylon (primarily SiO2)) — sedimentary

Petrified Wood (Agatized/Silicified Wood)

Silicified Paleoxylon (primarily SiO2)

sedimentary
Amethyst, Aquamarine, and Pearl Ring (SiO2 (Amethyst), Be3Al2Si6O18 (Aquamarine), CaCO3 (Pearl)) — gemstone

Amethyst, Aquamarine, and Pearl Ring

SiO2 (Amethyst), Be3Al2Si6O18 (Aquamarine), CaCO3 (Pearl)

gemstone
Fossiliferous Limestone (Limestone (CaCO3 - Calcium Carbonate)) — sedimentary

Fossiliferous Limestone

Limestone (CaCO3 - Calcium Carbonate)

sedimentary
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Chert (Jasper/Mudstone) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Mudstone)

Microcrystalline Quartz (SiO2)

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

Green Jasper

Silicon Dioxide (SiO2)

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

Petrified Wood

Silicified Wood (primarily SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary
Blue Apatite (Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))

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

Petrified Wood

Silicified wood (Quartz replacement, SiO2)

fossil
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Chalcopyrite (CuFeS2) — mineral

Chalcopyrite

CuFeS2

mineral
Chert (Flint) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Silica (SiO2)

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

Chert (specifically Brown Chert or Jasper)

Microcrystalline Quartz (SiO2)

sedimentary
Chalcedony (Agate / Jasper Specimen) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate / Jasper Specimen)

Silicon Dioxide (SiO2)

mineral
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

sedimentary
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

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

Petrified Wood

Silicified Wood (SiO2)

sedimentary
Chert (Microcrystalline silica (SiO2)) — sedimentary

Chert

Microcrystalline silica (SiO2)

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

Flint (Chert)

Cryptocrystalline Quartz (SiO2)

sedimentary
Pyrite (Fool's Gold) in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold) in Matrix

Iron Sulfide (FeS2)

mineral
Jasper (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper

Silicon Dioxide (SiO2) microcrystalline quartz

sedimentary
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Chert (Agatized/Chalcedony variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Agatized/Chalcedony variety)

Microcrystalline Quartz (SiO2)

sedimentary
Pearls (likely freshwater cultured pearls) (Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin) — gemstone

Pearls (likely freshwater cultured pearls)

Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

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

Chert / Flint

Chert (Microcrystalline Quartz, SiO2)

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

Chert / Flint

Silicon dioxide (SiO2)

sedimentary
Gold Ore (Native Gold (Au) in Matrix) — mineral

Gold Ore

Native Gold (Au) in Matrix

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

Chert (Field Flint)

Microcrystalline Quartz (SiO2)

sedimentary