Rock Identifier

Category

Sedimentary (Chemically Precipitated Mineral)

Browse sedimentary (chemically precipitated mineral) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Chemically Precipitated Mineral) in the encyclopedia

Coal

Conglomerate

Glauconite

Quartzite Sandstone

Quartzite Sandstone

Breccia

Hutcheonite

Halite

Ironstone

Sperrylite

Baddeleyite

Anatase

Brookite

Chert (Smooth River Stone) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Smooth River Stone)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Ironstone Concretion (Limonite/Goethite) (Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion (Limonite/Goethite)

Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)

Banded Iron Formation (Banded Iron Formation (BIF)) — sedimentary

Banded Iron Formation

Banded Iron Formation (BIF)

Milky quartz-rich rock (Quartz (silicon dioxide, SiO₂), likely with mica or feldspar inclusions) — mineral

Milky quartz-rich rock

Quartz (silicon dioxide, SiO₂), likely with mica or feldspar inclusions

Milky quartz (likely quartz fragment) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Yellow Ochre / Limonite (Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)

Chert (Nodule) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Nodule)

Chert (Cryptocrystalline Silica, SiO2)

Chert (often called Flint or Jasper) (Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)

Chert (specifically Flint or Jasper variant) (Microcrystalline silica (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline silica (SiO2)

Chert (specifically Pink Chert or Jasperized Chert) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (specifically Pink Chert or Jasperized Chert)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

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

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

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

Chert (Chert Nodule)

Silicon Dioxide (SiO2)

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

Chert (Flint) with Glauconite

Microcrystalline Quartz (SiO2)

Quartz (Clear/Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear/Milky)

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — Mineral / Sedimentary component

Quartz Pebble

Silicon Dioxide (SiO2)

Mineral / Sedimentary component

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Tumbled blue calcite (Calcite (CaCO₃), likely blue variety) — mineral

Tumbled blue calcite

Calcite (CaCO₃), likely blue variety

Polished/tumbled calcite (Calcite (calcium carbonate, CaCO₃)) — mineral

Polished/tumbled calcite

Calcite (calcium carbonate, CaCO₃)

Tumbled Yellow Chalcedony / Iron-Stained Quartz (Silicon Dioxide (SiO2)) — mineral

Tumbled Yellow Chalcedony / Iron-Stained Quartz

Silicon Dioxide (SiO2)

Celestite (Celestine) Druze on Agate/Host Rock (Strontium sulfate (SrSO4)) — mineral

Celestite (Celestine) Druze on Agate/Host Rock

Strontium sulfate (SrSO4)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Aragonite Star Cluster (Aragonite (Calcium Carbonate, CaCO3)) — mineral

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Satin Spar (often marketed as Selenite) (Fibrous Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Carnelian (Carnelian Chalcedony (SiO2)) — mineral

Carnelian

Carnelian Chalcedony (SiO2)

Agate (specifically Lace Agate or Banded Agate) (Silicon Dioxide (SiO2)) — mineral

Agate (specifically Lace Agate or Banded Agate)

Silicon Dioxide (SiO2)

Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Brown Quartz (Jasper or Chert) (Silicon Dioxide (SiO2)) — sedimentary

Brown Quartz (Jasper or Chert)

Silicon Dioxide (SiO2)

Sandstone (Picture Sandstone) (Sandstone (primarily Quartz with Iron Oxide impurities)) — sedimentary

Sandstone (Picture Sandstone)

Sandstone (primarily Quartz with Iron Oxide impurities)

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

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper/Chaldcedony)

Silicon Dioxide (SiO2)

Common Opal (Hydrated silica (SiO2 " nH2O)) — mineral

Common Opal

Hydrated silica (SiO2 " nH2O)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Dyed Agate (Silicon Dioxide (SiO2) with artificial pigment) — sedimentary

Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Chert Nodules with Iron Staining (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodules with Iron Staining

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Silicon Dioxide (SiO2)

Optical Calcite (Calcium Carbonate (CaCO3)) — mineral

Optical Calcite

Calcium Carbonate (CaCO3)