Rock Identifier

Category

Anthropogenic (Human Made) Sedimentary Like Material

Browse anthropogenic (human made) sedimentary like material specimens identified by the Rock Identifier community.

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Coquina (Biogenic Limestone (Calcite / CaCO3)) — sedimentary

Coquina

Biogenic Limestone (Calcite / CaCO3)

Chert Nodule in Limestone (Chert (Microcrystalline Quartz, SiO2) and Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Chert Nodule in Limestone

Chert (Microcrystalline Quartz, SiO2) and Limestone (Calcium Carbonate, CaCO3)

Chert (and Flint) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (and Flint)

Microcrystalline Silica (SiO2)

Chert (Common Opal variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Common Opal variant)

Microcrystalline Quartz (SiO2)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Chert (often called Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ironstone Concretion (Iron-rich Mudstone) (Siderite / Geothite concretion (FeCO3 / FeO(OH))) — sedimentary

Ironstone Concretion (Iron-rich Mudstone)

Siderite / Geothite concretion (FeCO3 / FeO(OH))

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

Chert (Jasper)

Microcrystalline Quartz (SiO2) with iron oxide impurities

Chert (specifically Chalcedony/Flint variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Chalcedony/Flint variant)

Silicon Dioxide (SiO2)

Fossilized Coral (Anthozoa (Fossilized)) — Sedimentary / Fossil

Fossilized Coral

Anthozoa (Fossilized)

Sedimentary / Fossil

Red Jasper (Jasper (Silicon Dioxide) - SiO2) — sedimentary

Red Jasper

Jasper (Silicon Dioxide) - SiO2

Conglomerate (Conglomerate (clastic sedimentary rock type)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock type)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Silty Shale (Silty Shale (Fissile Sedimentary Rock)) — sedimentary

Silty Shale

Silty Shale (Fissile Sedimentary Rock)

Sandstone (Quartzose) (Arenite (SiO2 principal)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2 principal)

Sandstone (Ferruginous) (Arenite with Iron oxide staining (SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

Chert (Banded Variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Banded Variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Chert (often called Flint or Jasper) (Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Sandstone (with potential iron-oxide weathering) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential iron-oxide weathering)

Arenite (SiO2 based)

Chert (variations include Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

Coquina (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Sandstone (Quartzite-rich River Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich River Cobble)

Clastic sedimentary rock (primarily SiO2)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Fossilized Shell in Limestone (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossilized Shell in Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Chert (Flint) (Silicon Dioxide (SiO2)) — Sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (often called Flint or Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Chert (often called Flint when dark) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Chert Nodule (Flint) (Chert (Cryptocrystalline Silica - SiO2)) — sedimentary

Chert Nodule (Flint)

Chert (Cryptocrystalline Silica - SiO2)

Flint Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Flint Nodule

Microcrystalline Quartz (SiO2)

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

Chert (Jasper/Chalcedony variety)

Silicon Dioxide (SiO2)

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

Tufa

Calcareous Tufa (Calcium Carbonate, CaCO3)

Sandstone (with Limonite staining) (Arenite (primarily SiO2 with FeO(OH)·nH2O)) — sedimentary

Sandstone (with Limonite staining)

Arenite (primarily SiO2 with FeO(OH)·nH2O)

Red Sandstone (Arenite (composed primarily of SiO2 with Fe2O3 cementation)) — sedimentary

Red Sandstone

Arenite (composed primarily of SiO2 with Fe2O3 cementation)

Sandstone (Flagstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Flagstone)

Arenite (composed primarily of SiO2)

Sandstone Pebble (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone Pebble

Arenite (primarily Quartz, SiO2)

Sandstone Concretion (Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)) — sedimentary

Sandstone Concretion

Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)

Chert (specifically Jasper or Brown Chert node) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Brown Chert node)

Microcrystalline Quartz (SiO2)