Rock Identifier

Category

Sedimentary (Physico Chemical Precipitate)

Browse sedimentary (physico chemical precipitate) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Physico Chemical Precipitate) in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Sinter

Coal

Kambaba Jasper

Limestone

Asphalt Rock

Claystone

Mudstone

Sapropel

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

Quartz and Mixed Sedimentary Rocks (Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies) — sedimentary

Quartz and Mixed Sedimentary Rocks

Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies

Sandstone with Liesegang Rings (Clastic Sedimentary Rock with Iron Oxide Precipitates (SiO2 + Fe2O3)) — sedimentary

Sandstone with Liesegang Rings

Clastic Sedimentary Rock with Iron Oxide Precipitates (SiO2 + Fe2O3)

Banded iron formation fragment (likely hematite–magnetite ironstone) (Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and microcrystalline quartz (SiO₂)) — sedimentary

Banded iron formation fragment (likely hematite–magnetite ironstone)

Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and microcrystalline quartz (SiO₂)

Ironstone Concretion (Limonite/Goethite) (Goethite-rich Concretion (FeO(OH))) — sedimentary

Ironstone Concretion (Limonite/Goethite)

Goethite-rich Concretion (FeO(OH))

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

Quartz (Milky/Bull Quartz)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Oolitic Limestone (Egg Stone)

Oolite (Chemical sedimentary rock, primarily CaCO3)

Banded iron formation fragment (likely hematite–magnetite ironstone) (BIF; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and silica as microcrystalline quartz (SiO₂)) — sedimentary

Banded iron formation fragment (likely hematite–magnetite ironstone)

BIF; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and silica as microcrystalline quartz (SiO₂)

Chert (Iron-Stained) (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) impurities) — sedimentary

Chert (Iron-Stained)

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) impurities

Chert (Light Grey / Flint variant) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Light Grey / Flint variant)

Cryptocrystalline Quartz (SiO2)

Clear Quartz (Rock Crystal) Bracelet (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Rock Crystal) Bracelet

Silicon Dioxide (SiO2)

Amethyst Geode Fragment (Quartz (SiO2) with trace iron impurities) — mineral

Amethyst Geode Fragment

Quartz (SiO2) with trace iron impurities

Banded iron formation pebble (Banded iron formation (BIF), chiefly hematite/magnetite with chert or jasper) — sedimentary

Banded iron formation pebble

Banded iron formation (BIF), chiefly hematite/magnetite with chert or jasper

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

Agate

Chalcedony (Silicon Dioxide, SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Calcite crystal fragment

Calcite (calcium carbonate, CaCO₃)

Sandstone (with Liesegang rings or Oxidation) (Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)) — sedimentary

Sandstone (with Liesegang rings or Oxidation)

Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)

Chert with Manganese Dendrites / River Silt Overlays (Cryptocrystalline Quartz (SiO2) with Manganese Oxides) — sedimentary

Chert with Manganese Dendrites / River Silt Overlays

Cryptocrystalline Quartz (SiO2) with Manganese Oxides

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Banded iron formation fragment (likely jasper-rich ironstone) (Banded iron formation (BIF), commonly hematite/goethite with chert or jasper; Fe₂O₃/FeO(OH) and SiO₂) — sedimentary

Banded iron formation fragment (likely jasper-rich ironstone)

Banded iron formation (BIF), commonly hematite/goethite with chert or jasper; Fe₂O₃/FeO(OH) and SiO₂

River Pebble (Greywacke or Chert mix) (Silicon Dioxide (SiO2) with varying mineral impurities) — sedimentary

River Pebble (Greywacke or Chert mix)

Silicon Dioxide (SiO2) with varying mineral impurities

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

Chert Pebble with Quartz Veining

Microcrystalline Quartz (SiO2)

Chert or flint nodule (Microcrystalline quartz (SiO₂), likely chalcedony-rich chert) — sedimentary

Chert or flint nodule

Microcrystalline quartz (SiO₂), likely chalcedony-rich chert

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

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Liesegang Banded Sandstone (Concretion / Weathered Pebble) (Sandstone showing Liesegang rings / Weathering rind (SiO2 with iron oxides)) — sedimentary

Liesegang Banded Sandstone (Concretion / Weathered Pebble)

Sandstone showing Liesegang rings / Weathering rind (SiO2 with iron oxides)

Milky quartz (quartz crystal) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (quartz crystal)

Quartz, silicon dioxide (SiO₂)

Septarian Nodule (Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)) — sedimentary

Septarian Nodule

Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)

Agate (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Carnelian Agate Beads (Silicon Dioxide (SiO2)) — gemstone

Carnelian Agate Beads

Silicon Dioxide (SiO2)

Baryte (Barite) (Barium sulfate (BaSO4)) — mineral

Baryte (Barite)

Barium sulfate (BaSO4)

Geode (unopened) or Calcareous Nodule (Siliceous or Calcareous Concretion/Nodule) — sedimentary

Geode (unopened) or Calcareous Nodule

Siliceous or Calcareous Concretion/Nodule

Iron-rich chert or jasper (Microcrystalline quartz (SiO₂), colored by hematite/goethite inclusions) — sedimentary

Iron-rich chert or jasper

Microcrystalline quartz (SiO₂), colored by hematite/goethite inclusions

Chert (Common Opal/Jasper transition) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Common Opal/Jasper transition)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Rounded limestone pebble (Limestone, predominantly calcite (CaCO₃)) — sedimentary

Rounded limestone pebble

Limestone, predominantly calcite (CaCO₃)

Red Jasper Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper Pebble

Microcrystalline Quartz (SiO2)

Banded Onyx (Green Onyx) (Banded Calcite or Travertine (CaCO3)) — Sedimentary

Banded Onyx (Green Onyx)

Banded Calcite or Travertine (CaCO3)

Tufa (Calcareous Tufa (Calcium Carbonate, CaCO3)) — sedimentary

Tufa

Calcareous Tufa (Calcium Carbonate, CaCO3)

Turquoise (Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O