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

Jasper in Basalt Matrix (Silicon Dioxide (SiO2) with impurities; Chalcedony) — sedimentary (secondary mineral) within igneous

Jasper in Basalt Matrix

Silicon Dioxide (SiO2) with impurities; Chalcedony

sedimentary (secondary mineral) within igneous

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz (Milk or Clear) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milk or Clear)

Silicon Dioxide (SiO2)

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Quartz (White/Milky Quartz)

Silicon Dioxide (SiO2)

Likely weathered limestone or calcite-rich stone (Limestone, primarily calcium carbonate (CaCO₃), possibly calcite) — sedimentary

Likely weathered limestone or calcite-rich stone

Limestone, primarily calcium carbonate (CaCO₃), possibly calcite

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Chert (Vuggy or Fossilliferous) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Vuggy or Fossilliferous)

Microcrystalline Quartz (SiO2)

Septarian Pebble (Septarian nodule / Concretion) — sedimentary

Septarian Pebble

Septarian nodule / Concretion

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Dalmatian Stone (Dalmatian Stone (formerly called Dalmatian Jasper)) — igneous

Dalmatian Stone

Dalmatian Stone (formerly called Dalmatian Jasper)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Quartz crystals on matrix (Silicon dioxide (SiO2)) — mineral

Quartz crystals on matrix

Silicon dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

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

Quartz Geode

Quartz (Silicon Dioxide, SiO2)

Green Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Green Jasper

Microcrystalline Quartz (SiO2)

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

Tumbled Hematite

Iron(III) oxide (Fe2O3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Sand and Gravel (Quartz-rich) (Unconsolidated fluvial/beach sediment (primarily Silica/SiO2)) — sedimentary

Sand and Gravel (Quartz-rich)

Unconsolidated fluvial/beach sediment (primarily Silica/SiO2)

Limonite Pseudomorph after Pyrite (Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)) — mineral

Limonite Pseudomorph after Pyrite

Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)

Limonite (Ironstone Concretion) (Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)) — sedimentary

Limonite (Ironstone Concretion)

Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)

Quartz Geode Fragment (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Crystalline Silicon Dioxide (SiO2)

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

Agate / Chalcedony

Silicon dioxide (SiO2)

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

Calcite

Calcite (Calcium Carbonate, CaCO3)

Quartz Geode with Calcite/Siderite (Crystalline Silicon Dioxide (SiO2) with Carbonate inclusions) — mineral

Quartz Geode with Calcite/Siderite

Crystalline Silicon Dioxide (SiO2) with Carbonate inclusions

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Sandstone (Sandstone (clastic sedimentary rock)) — Rock

Sandstone

Sandstone (clastic sedimentary rock)

Iron-stained Quartz Vein (Silicon Dioxide (SiO2) with Limonite/Hematite inclusions) — mineral

Iron-stained Quartz Vein

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Pale green tumbled mineral fragment, likely serpentine or green calcite (Probable serpentine-group mineral (Mg3Si2O5(OH)4) or, less likely, calcite (CaCO3); identification is uncertain from the photograph) — mineral

Pale green tumbled mineral fragment, likely serpentine or green calcite

Probable serpentine-group mineral (Mg3Si2O5(OH)4) or, less likely, calcite (CaCO3); identification is uncertain from the photograph

Limonite Concretion (Hydrated Iron Oxide / FeO(OH)·nH2O) — sedimentary

Limonite Concretion

Hydrated Iron Oxide / FeO(OH)·nH2O

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)