Rock Identifier

Category

Sedimentary (Man Made)

Browse sedimentary (man made) specimens identified by the Rock Identifier community.

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Agate (Dyed High-Grade Polished Slice) (Silicon dioxide (SiO2), Chalcedony crystal variety) — mineral

Agate (Dyed High-Grade Polished Slice)

Silicon dioxide (SiO2), Chalcedony crystal variety

Dendrite (Manganese Oxide Dendrites) (Psilomelane or Pyrolusite on Matrix (typically MnO2)) — mineral

Dendrite (Manganese Oxide Dendrites)

Psilomelane or Pyrolusite on Matrix (typically MnO2)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood (Silicified wood (Quartz/Chalcedony)) — Sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony)

Honey Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Honey Calcite

Calcite (Calcium Carbonate, CaCO3)

Quartz (specifically Milky/White Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky/White Quartz)

Silicon Dioxide (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Biotite Schist (Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)) — metamorphic

Biotite Schist

Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Celestite (Celestine) (Strontium Sulfate (SrSO4)) — mineral

Celestite (Celestine)

Strontium Sulfate (SrSO4)

Clear Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Fluorite (likely Green Fluorite variant) (Calcium Fluoride (CaF2)) — mineral

Fluorite (likely Green Fluorite variant)

Calcium Fluoride (CaF2)

Banded Agate (Jasper-Agate) (Silicon Dioxide (SiO2)) — sedimentary

Banded Agate (Jasper-Agate)

Silicon Dioxide (SiO2)

Turquoise (Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Quartz Druzy Geode (Silicon Dioxide (SiO2) - Crystalline Variety) — mineral

Quartz Druzy Geode

Silicon Dioxide (SiO2) - Crystalline Variety

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Native Gold (in earring form) (Gold (Au)) — mineral

Native Gold (in earring form)

Gold (Au)

Multi-gemstone Quartz and Fluorite Bracelet (Silicon Dioxide (SiO2) and Calcium Fluoride (CaF2)) — mineral

Multi-gemstone Quartz and Fluorite Bracelet

Silicon Dioxide (SiO2) and Calcium Fluoride (CaF2)

Banded Gneiss (River Rock/Pebble) (Gneiss (specifically a banded variety often found as a river rock)) — Metamorphic Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Brown Jasper (Jasper (a cryptocrystalline variety of Quartz, SiO2)) — Mineral, specifically a variety of Quartz

Brown Jasper

Jasper (a cryptocrystalline variety of Quartz, SiO2)

Mineral, specifically a variety of Quartz

Picture Jasper (Silicon Dioxide (SiO2) - Opaque Impure Chalcedony) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) - Opaque Impure Chalcedony

Fossil Coral (Scleractinia (Anthos), primarily Calcium Carbonate (CaCO3)) — sedimentary

Fossil Coral

Scleractinia (Anthos), primarily Calcium Carbonate (CaCO3)

Red Jasper (Jasper (Silicon Dioxide: SiO2 with Iron oxide inclusions)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide: SiO2 with Iron oxide inclusions)

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

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)

Turquoise (Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O

Kyanite (Kyanite (Al2SiO5)) — Mineral

Kyanite

Kyanite (Al2SiO5)

Optical Calcite (Iceland Spar) (Calcium Carbonate (CaCO3)) — mineral

Optical Calcite (Iceland Spar)

Calcium Carbonate (CaCO3)

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

Chert (variations include Flint/Jasper)

Cryptocrystalline Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with Bioclastic Inclusions) — sedimentary

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclastic Inclusions

Turquoise (Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Quartzite / Sandstone / Chert Mix (Silicon Dioxide (SiO2)) — sedimentary and metamorphic

Quartzite / Sandstone / Chert Mix

Silicon Dioxide (SiO2)

sedimentary and metamorphic

Jasper (Mookaite style) (Silicon Dioxide (SiO2) with iron and manganese inclusions) — sedimentary

Jasper (Mookaite style)

Silicon Dioxide (SiO2) with iron and manganese inclusions

Coquina / Shelly Limestone (Bioclastic Limestone (composed of CaCO3)) — sedimentary

Coquina / Shelly Limestone

Bioclastic Limestone (composed of CaCO3)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Quartz (Druzy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy Quartz)

Silicon Dioxide (SiO2)