Rock Identifier

Category

Sedimentary (Chemically Precipitated)

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

Learn about Sedimentary (Chemically Precipitated) in the encyclopedia

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Sinter

Sinter

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

sedimentary
Rhodochrosite (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

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

Chert (Flint)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Chert / Flint

Silicon dioxide (SiO2)

sedimentary
Chalcedony with Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Druzy Quartz

Silicon Dioxide (SiO2)

mineral
Manganese Ore (Psilomelane/Pyrolusite) (Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)) — Mineral

Manganese Ore (Psilomelane/Pyrolusite)

Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)

Mineral
Chert with Quartz Veining (Microcrystalline Silica (SiO2)) — sedimentary

Chert with Quartz Veining

Microcrystalline Silica (SiO2)

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

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Chalcedony / Agate (Silicon Dioxide (SiO2)) — mineral

Chalcedony / Agate

Silicon Dioxide (SiO2)

mineral
Chert (with Quartz) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Quartz)

Microcrystalline Quartz (SiO2)

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

Flint or Chert

Microcrystalline Quartz (SiO2)

sedimentary
Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

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

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

mineral
Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO2)

sedimentary
Ferruginous Sandstone (Arenite with Iron-Oxide cement (Fe2O3 · nH2O)) — sedimentary

Ferruginous Sandstone

Arenite with Iron-Oxide cement (Fe2O3 · nH2O)

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

Flint

SiO2 (Microcrystalline Quartz / Chert)

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

Chert Pebble

Microcrystalline Quartz (SiO2)

sedimentary
Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

mineral
Limestone (Sedimentary rock composed mainly of calcite (CaCO3)) — sedimentary

Limestone

Sedimentary rock composed mainly of calcite (CaCO3)

sedimentary
Banded Calcite / Onyx Marble (Calcite (Travertine / Onyx Marble, CaCO3)) — sedimentary

Banded Calcite / Onyx Marble

Calcite (Travertine / Onyx Marble, CaCO3)

sedimentary
Chalcedony (Agate/Chert) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Chert)

Silicon Dioxide (SiO2)

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

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Banded Calcite (Green Onyx) (Calcite (CaCO3)) — sedimentary

Banded Calcite (Green Onyx)

Calcite (CaCO3)

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

Chert (Yellow Jasper/Flint)

Silicon Dioxide (SiO2)

sedimentary
Chalcedony (Agate/Chert variety) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

mineral
Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

sedimentary
Quartz (Chalcedony Fragment) (Silicon dioxide (SiO2)) — mineral

Quartz (Chalcedony Fragment)

Silicon dioxide (SiO2)

mineral
Yellow Calcite (Calcium Carbonate, CaCO3) — mineral

Yellow Calcite

Calcium Carbonate, CaCO3

mineral
Celestite (Celestine (SrSO4)) — mineral

Celestite

Celestine (SrSO4)

mineral
Limonite pseudo-concretion (Ironstone) (Limonite (FeO(OH)·nH2O) / Goethite) — sedimentary

Limonite pseudo-concretion (Ironstone)

Limonite (FeO(OH)·nH2O) / Goethite

sedimentary
Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

mineral
Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

mineral
Limonite Concretion (Hydrated Iron Oxide-Hydroxide, FeO(OH)·nH2O) — mineral

Limonite Concretion

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

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

Hematite

Iron(III) oxide (Fe2O3)

mineral
Chert (Arrowhead artifact) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Arrowhead artifact)

Chert (Cryptocrystalline Silica, SiO2)

sedimentary
Likely limestone fragment (Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image) — sedimentary

Likely limestone fragment

Calcite-rich limestone (primarily CaCO₃); exact identification is uncertain from the image

sedimentary
Porous limestone (Calcite-rich limestone (predominantly CaCO₃)) — sedimentary

Porous limestone

Calcite-rich limestone (predominantly CaCO₃)

sedimentary
Light-colored, weathered rock (possibly limestone) (Calcite-rich limestone, likely; precise identification is not possible from the image alone) — sedimentary

Light-colored, weathered rock (possibly limestone)

Calcite-rich limestone, likely; precise identification is not possible from the image alone

sedimentary
Black Chert River Stone (Cryptocrystalline Quartz (SiO2)) — sedimentary

Black Chert River Stone

Cryptocrystalline Quartz (SiO2)

sedimentary
Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

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

Chert (Chalcedony)

Silicon Dioxide (SiO2)

sedimentary