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

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

Pink calcite cluster

Calcite (calcium carbonate, CaCO₃)

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

Druzy Quartz on Limestone

Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)

Goldstone (Man-made glass infused with copper crystals) — mineral

Goldstone

Man-made glass infused with copper crystals

Tiger's Eye (SiO2 (Quartz pseudomorph after crocidolite)) — gemstone

Tiger's Eye

SiO2 (Quartz pseudomorph after crocidolite)

Chert (Silicon dioxide (SiO2)) — Sedimentary

Chert

Silicon dioxide (SiO2)

Carnelian (SiO2 (Variety of Chalcedony)) — gemstone

Carnelian

SiO2 (Variety of Chalcedony)

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

Likely limestone

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

Chert (Arrowhead or Flake) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Arrowhead or Flake)

Microcrystalline quartz (SiO2)

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

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)

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

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

Polished blue calcite

Calcite (CaCO₃), likely blue banded or massive calcite

Weathered limestone boulder (Limestone, composed mainly of calcite (CaCO₃); exact identification cannot be confirmed from the image alone.) — sedimentary

Weathered limestone boulder

Limestone, composed mainly of calcite (CaCO₃); exact identification cannot be confirmed from the image alone.

Weathered porous limestone (Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic) — sedimentary

Weathered porous limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic

Green Chert (Silicon Dioxide (SiO2)) — sedimentary

Green Chert

Silicon Dioxide (SiO2)

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

Chert (Jasper/Flint variety)

Silicon dioxide (SiO2)

Limonite Concretion (Limonite (FeO(OH)·nH2O) Pseudomorph) — sedimentary

Limonite Concretion

Limonite (FeO(OH)·nH2O) Pseudomorph

Galena (Lead sulfide (PbS)) — mineral

Galena

Lead sulfide (PbS)

Oolitic Limestone (Egg Stone) (Oolite (Chemical sedimentary rock, primarily CaCO3)) — sedimentary

Oolitic Limestone (Egg Stone)

Oolite (Chemical sedimentary rock, primarily CaCO3)

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

Hematite

Iron(III) oxide (Fe2O3)

Iron-rich rock, possibly limonite or goethite (Likely goethite (α-FeO(OH)) and/or limonite (iron oxides/oxyhydroxides); identification is uncertain from the image alone) — mineral

Iron-rich rock, possibly limonite or goethite

Likely goethite (α-FeO(OH)) and/or limonite (iron oxides/oxyhydroxides); identification is uncertain from the image alone

Red jasper (likely iron-rich chert) (Microcrystalline quartz (SiO₂) colored by hematite/goethite; possibly ferruginous chert) — sedimentary

Red jasper (likely iron-rich chert)

Microcrystalline quartz (SiO₂) colored by hematite/goethite; possibly ferruginous chert

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

Quartz-encrusted Matrix

Silicon Dioxide (SiO2) with Ferruginous Sandstone

Honey calcite (orange calcite) (Calcite, calcium carbonate (CaCO₃)) — mineral

Honey calcite (orange calcite)

Calcite, calcium carbonate (CaCO₃)

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Celadonite in Basalt (Green Earth) (Celadonite (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2)) — mineral

Celadonite in Basalt (Green Earth)

Celadonite (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz Druzy in Chert Pebble (Silicon Dioxide (SiO2) - Microcrystalline & Crystalline Quartz) — sedimentary

Quartz Druzy in Chert Pebble

Silicon Dioxide (SiO2) - Microcrystalline & Crystalline Quartz

Red Jasper (River Pebble) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary/mineral

Red Jasper (River Pebble)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary/mineral

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

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Calcite crystal cluster (Calcite (calcium carbonate, CaCO₃)) — mineral

Calcite crystal cluster

Calcite (calcium carbonate, CaCO₃)

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)

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)

White quartz-rich rock, likely milky quartz or quartzite (Quartz (SiO₂); possibly quartzite, a metamorphosed quartz sandstone) — metamorphic

White quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂); possibly quartzite, a metamorphosed quartz sandstone

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)