Rock Identifier

Category

Man Made Composite (Lithified Equivalent Of Sedimentary)

Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.

Chert (specifically Jasper or Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Flint)

Cryptocrystalline Quartz (SiO2)

Coquina (Bioclastic Limestone (Coquina)) — sedimentary

Coquina

Bioclastic Limestone (Coquina)

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

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Chert (with Limestone matrix) (Silicon dioxide (SiO2)) — sedimentary

Chert (with Limestone matrix)

Silicon dioxide (SiO2)

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

Chert (and/or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (variations include Flint/Jasper)

Cryptocrystalline Quartz (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO₂)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (or Flint) (Chert (cryptocrystalline quartz), SiO2) — Sedimentary

Chert (or Flint)

Chert (cryptocrystalline quartz), SiO2

Belemnoit (Fossil) (Belemnoidea (Order), Rostrum / Guard) — sedimentary

Belemnoit (Fossil)

Belemnoidea (Order), Rostrum / Guard

Asphalt Chunk (with aggregate) (Bituminous concrete / Anthropogenic conglomerate) — sedimentary (anthropogenic/man-made conglomerate)

Asphalt Chunk (with aggregate)

Bituminous concrete / Anthropogenic conglomerate

sedimentary (anthropogenic/man-made conglomerate)

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Sandstone (likely Fossiliferous) (Arenite / Fossiliferous Sandstone (SiO2 composition)) — sedimentary

Sandstone (likely Fossiliferous)

Arenite / Fossiliferous Sandstone (SiO2 composition)

Chert (varieties include Flint and Mudstone) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (varieties include Flint and Mudstone)

Microcrystalline Silica (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (varietal Chalcedony or Flint) (Silicon dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (varietal Chalcedony or Flint)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Banded Chert (River Stone) (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert (River Stone)

Silicon Dioxide (SiO2)

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

Chert / Flint

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Fossilized Shell in Limestone (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossilized Shell in Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Jasper (Iron-rich Chalcedony) (Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)) — Sedimentary / Metamorphic

Jasper (Iron-rich Chalcedony)

Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)

Sedimentary / Metamorphic

Chert (Quartz Variety) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Quartz Variety)

Chert (Silicon Dioxide, SiO2)

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

Chert (often called Flint)

Chert (SiO2)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Coral Rock (Coquina) (Biogenic Limestone (Calcium Carbonate - CaCO3)) — sedimentary

Coral Rock (Coquina)

Biogenic Limestone (Calcium Carbonate - CaCO3)

Sandstone (likely Quartzose Sandstone) (Arenite) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite

Chert (with Desert Varnish/Iron Stain) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (with Desert Varnish/Iron Stain)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Coquina / Fossiliferous Limestone (Coquina (composed primarily of Calcium Carbonate / CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Coquina (composed primarily of Calcium Carbonate / CaCO3)

River Rock (Sedimentary Rock (various compositions)) — sedimentary

River Rock

Sedimentary Rock (various compositions)

Petrified Wood (Silicified Wood) (Silicified Paleoflora (mainly Quartz, SiO2)) — metamorphic

Petrified Wood (Silicified Wood)

Silicified Paleoflora (mainly Quartz, SiO2)

Coquina (Biogenic Limestone (Calcite, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcite, CaCO3)

Coquina (Biogenic Limestone (Coquina)) — sedimentary

Coquina

Biogenic Limestone (Coquina)

Pearl (Calcium Carbonate (CaCO3) with Conchiolin) — mineral

Pearl

Calcium Carbonate (CaCO3) with Conchiolin

Pyrite (Iron Disulfide (FeS2)) — Mineral

Pyrite

Iron Disulfide (FeS2)

Specular Hematite (Specularite) (Iron Oxide (Fe2O3)) — mineral

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

Chert (specifically Gray/Blue-Gray Chert) (Chert (SiO2)) — sedimentary

Chert (specifically Gray/Blue-Gray Chert)

Chert (SiO2)

Coquina (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Coquina / Fossiliferous Limestone (Calcareous bioclastic sedimentary rock (CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Calcareous bioclastic sedimentary rock (CaCO3)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Common Variety, Jasper)

Microcrystalline Quartz (SiO2)