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

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Banded iron formation (ironstone) (BIF; chiefly hematite/magnetite with chert or jasper (Fe₂O₃/Fe₃O₄ and SiO₂)) — sedimentary

Banded iron formation (ironstone)

BIF; chiefly hematite/magnetite with chert or jasper (Fe₂O₃/Fe₃O₄ and SiO₂)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

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)

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

Chert (Vuggy or Fossilliferous)

Microcrystalline Quartz (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Copper-bearing sulfide ore, possibly chalcopyrite-rich (Chalcopyrite (CuFeS₂), possibly with bornite and oxidation products) — mineral

Copper-bearing sulfide ore, possibly chalcopyrite-rich

Chalcopyrite (CuFeS₂), possibly with bornite and oxidation products

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Quartz Geode Fragment

Crystalline Silicon Dioxide (SiO2)

White tumbled stone, likely quartz or milky chalcedony (Most likely microcrystalline quartz/chalcedony (SiO₂); exact identification requires hardness and specific-gravity testing) — mineral

White tumbled stone, likely quartz or milky chalcedony

Most likely microcrystalline quartz/chalcedony (SiO₂); exact identification requires hardness and specific-gravity testing

Veined Limestone (Calcite-veined Limestone (CaCO3)) — sedimentary

Veined Limestone

Calcite-veined Limestone (CaCO3)

Septarian Pebble (Septarian nodule / Concretion) — sedimentary

Septarian Pebble

Septarian nodule / Concretion

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

Tiger's Eye

Silicon dioxide (Quartz pseudomorph after crocidolite), SiO2

Banded iron formation (iron-rich metamorphic rock) (Banded iron formation (BIF), chiefly hematite/magnetite with chert or quartz (Fe₂O₃/Fe₃O₄ and SiO₂)) — metamorphic

Banded iron formation (iron-rich metamorphic rock)

Banded iron formation (BIF), chiefly hematite/magnetite with chert or quartz (Fe₂O₃/Fe₃O₄ and SiO₂)

Limonite (Ironstone Concretion) (Limonite (FeO(OH)·nH2O)) — mineral/sedimentary

Limonite (Ironstone Concretion)

Limonite (FeO(OH)·nH2O)

mineral/sedimentary

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

Chert / Flint

Microcrystalline Quartz (SiO2)

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

Dalmatian Stone

Dalmatian Stone (formerly called Dalmatian Jasper)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Coquina (Bioclastic Limestone (CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (CaCO3)

Travertine (Tufa) (Chemical Sedimentary Rock (CaCO3)) — sedimentary

Travertine (Tufa)

Chemical Sedimentary Rock (CaCO3)

Travertine (Tufa) (Chemical Sedimentary Limestone (CaCO3)) — sedimentary

Travertine (Tufa)

Chemical Sedimentary Limestone (CaCO3)

Yellow Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Lake Superior Agate (Silicon Dioxide (SiO2) - variety: banded chalcedony quartzite) — sedimentary

Lake Superior Agate

Silicon Dioxide (SiO2) - variety: banded chalcedony quartzite

Jasper / Chert (polished) (Microcrystalline Quartz (SiO2)) — sedimentary / mineral

Jasper / Chert (polished)

Microcrystalline Quartz (SiO2)

sedimentary / mineral

Blue Agate (likely dyed) (Silicon Dioxide (SiO2)) — mineral

Blue Agate (likely dyed)

Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Jasper with Quartz Veining (Microcrystalline quartz (SiO2) with iron oxide impurities) — sedimentary

Jasper with Quartz Veining

Microcrystalline quartz (SiO2) with iron oxide impurities

Iron-stained Quartz (Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)) — mineral

Iron-stained Quartz

Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)

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

Quartz Geode

Quartz (Silicon Dioxide, SiO2)

Wood Stone (Dragon Stone variant) (Argillaceous Sedimentary Rock) — sedimentary

Wood Stone (Dragon Stone variant)

Argillaceous Sedimentary Rock

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

Agate / Chalcedony

Silicon dioxide (SiO2)

Jasper Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper Pebble

Microcrystalline Quartz (SiO2)

Banded ironstone pebble (Banded iron formation (BIF), chiefly microcrystalline quartz/chert and iron oxides) — sedimentary

Banded ironstone pebble

Banded iron formation (BIF), chiefly microcrystalline quartz/chert and iron oxides

Calcite-rich limestone (Limestone, predominantly calcite (CaCO₃), possibly recrystallized) — sedimentary

Calcite-rich limestone

Limestone, predominantly calcite (CaCO₃), possibly recrystallized

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

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

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Stalactitic calcite (cave-calcite slice) (Calcite, CaCO₃) — mineral

Stalactitic calcite (cave-calcite slice)

Calcite, CaCO₃

Drusy quartz cluster (likely quartz on a pale host rock) (Quartz, silicon dioxide (SiO₂), likely microcrystalline/drusy quartz) — mineral

Drusy quartz cluster (likely quartz on a pale host rock)

Quartz, silicon dioxide (SiO₂), likely microcrystalline/drusy quartz