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

Quartzite Sandstone

Quartzite Sandstone

Glauconite

Breccia

Hutcheonite

Halite

Ironstone

Sperrylite

Baddeleyite

Anatase

Brookite

Sandstone (Ferruginous) (Arenite (Fe-rich SiO2)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich SiO2)

Likely pale green calcite (Calcite (calcium carbonate, CaCO₃)) — mineral

Likely pale green calcite

Calcite (calcium carbonate, CaCO₃)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Sedimentary rock containing Indeterminate Fossil remains (likely Crinoid stem or Bryozoan fragment)) — fossil

Fossiliferous Limestone

Sedimentary rock containing Indeterminate Fossil remains (likely Crinoid stem or Bryozoan fragment)

Druzy Quartz on Limestone (Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)) — sedimentary

Druzy Quartz on Limestone

Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)

Weathered limestone fragment (Calcite-rich limestone, chiefly calcium carbonate (CaCO₃)) — sedimentary

Weathered limestone fragment

Calcite-rich limestone, chiefly calcium carbonate (CaCO₃)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz or Cryptocrystalline Silica (SiO2)

Dyed Quartz Geode (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

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

Jasper

Silicon Dioxide (SiO2), Microcrystalline Quartz

Carnelian (SiO2 (Variety of Chalcedony)) — gemstone

Carnelian

SiO2 (Variety of Chalcedony)

Polished brown flint/chert nodule (Microcrystalline quartz (SiO₂), commonly called flint or chert) — sedimentary

Polished brown flint/chert nodule

Microcrystalline quartz (SiO₂), commonly called flint or chert

Ironstone concretion (Iron-oxide-cemented sedimentary concretion, commonly hematite/goethite with quartz or clay) — sedimentary

Ironstone concretion

Iron-oxide-cemented sedimentary concretion, commonly hematite/goethite with quartz or clay

Crushed Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Crushed Limestone

Sedimentary Calcium Carbonate (CaCO3)

Milky Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Chert on Volcanic Host Rock (Sedimentary Chert (SiO2) within Basalt or Andesite) — sedimentary

Chert on Volcanic Host Rock

Sedimentary Chert (SiO2) within Basalt or Andesite

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

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

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Halite (Rock Salt) Crust (Sodium Chloride (NaCl)) — sedimentary

Halite (Rock Salt) Crust

Sodium Chloride (NaCl)

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

Chert with Iron Staining

Microcrystalline Quartz (SiO2)

Banded iron formation fragment (ironstone) (Banded iron formation; chiefly hematite/magnetite with chert (SiO₂)) — sedimentary

Banded iron formation fragment (ironstone)

Banded iron formation; chiefly hematite/magnetite with chert (SiO₂)

Chert (River Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (River Pebble)

Silicon Dioxide (SiO2)

Pink calcite cluster (Calcite (calcium carbonate, CaCO₃)) — mineral

Pink calcite cluster

Calcite (calcium carbonate, CaCO₃)

Chalcedony (Agate Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chalcedony (Agate Pebble)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron inclusions

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Quartz-encrusted Matrix (Silicon Dioxide (SiO2) with Ferruginous Sandstone) — sedimentary

Quartz-encrusted Matrix

Silicon Dioxide (SiO2) with Ferruginous Sandstone

Pyrite nodule (probable iron sulfide concretion) (Pyrite, FeS₂, likely weathered within a sedimentary concretion) — mineral

Pyrite nodule (probable iron sulfide concretion)

Pyrite, FeS₂, likely weathered within a sedimentary concretion

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

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Orange Calcite (Calcite (Calcium Carbonate - CaCO3)) — mineral

Orange Calcite

Calcite (Calcium Carbonate - CaCO3)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — Mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Sandstone Cobble with Liesegang Rings (Arenite with iron oxide precipitation (SiO2 matrix with Fe2O3 banding)) — sedimentary

Sandstone Cobble with Liesegang Rings

Arenite with iron oxide precipitation (SiO2 matrix with Fe2O3 banding)

Yellow Chert (River Pebble) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Yellow Chert (River Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Iron-rich concretion or weathered ironstone (Goethite–hematite-rich limonite (FeO(OH)·nH₂O / Fe₂O₃)) — sedimentary

Iron-rich concretion or weathered ironstone

Goethite–hematite-rich limonite (FeO(OH)·nH₂O / Fe₂O₃)

Polished blue calcite (Calcite (CaCO₃), likely blue banded or massive calcite) — mineral

Polished blue calcite

Calcite (CaCO₃), likely blue banded or massive calcite

Chert (Silicon dioxide (SiO2)) — Sedimentary

Chert

Silicon dioxide (SiO2)

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

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Jasper (Silicon dioxide (Microcrystalline quartz, SiO2)) — sedimentary

Jasper

Silicon dioxide (Microcrystalline quartz, SiO2)

Likely limestone (Calcite-rich carbonate rock; mainly calcium carbonate (CaCO₃)) — sedimentary

Likely limestone

Calcite-rich carbonate rock; mainly calcium carbonate (CaCO₃)