Rock Identifier

Category

Anthropogenic (Man Made Material Mimicking Sedimentary Rock)

Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.

Learn about Anthropogenic (Man Made Material Mimicking Sedimentary Rock) in the encyclopedia

Rock Gypsum

Limestone

Dunite

Claystone

Diatomite

Tripolite

Sandstone

Marl

Gondite

Lherzolite

Blue Goldstone

Phosphorite

Shiva Lingam (Cryptocrystalline Quartz (Jasproid/Sandstone) with Iron Oxide (Fe2O3)) — sedimentary

Shiva Lingam

Cryptocrystalline Quartz (Jasproid/Sandstone) with Iron Oxide (Fe2O3)

Chert (Yellow Jasper variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Bituminous Coal (Organic-rich sedimentary rock (Complex hydrocarbons)) — sedimentary

Bituminous Coal

Organic-rich sedimentary rock (Complex hydrocarbons)

Crushed Stone (Gravel/Aggregates) (Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)) — sedimentary and igneous (mixed)

Crushed Stone (Gravel/Aggregates)

Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)

sedimentary and igneous (mixed)

Rounded sandstone pebble (Quartz-rich sandstone (commonly arkosic or feldspathic sandstone)) — sedimentary

Rounded sandstone pebble

Quartz-rich sandstone (commonly arkosic or feldspathic sandstone)

Chert (Yellow/Tan Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow/Tan Jasper)

Microcrystalline Quartz (SiO2)

Red Sandstone (Clastic sedimentary rock (primarily SiO2 with Fe2O3 iron oxide staining)) — sedimentary

Red Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3 iron oxide staining)

Quartz (Grain) (Silicon Dioxide (SiO2)) — mineral

Quartz (Grain)

Silicon Dioxide (SiO2)

Sandstone (Micaceous/Feldspathic variant) (Arenite (specifically subarkose or lithic arenite)) — sedimentary

Sandstone (Micaceous/Feldspathic variant)

Arenite (specifically subarkose or lithic arenite)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Brachiopod Fossil in Shale (Phylum Brachiopoda (often species of Order Spiriferida or Rhynchonellida)) — sedimentary

Brachiopod Fossil in Shale

Phylum Brachiopoda (often species of Order Spiriferida or Rhynchonellida)

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

Red jasper (likely iron-rich chert)

Microcrystalline quartz (SiO₂), colored by hematite/goethite; possibly brecciated jasper

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

Chert (specifically Brown Chert or Jasper)

Microcrystalline Quartz (SiO2)

Rounded gray-brown cobble, likely weathered sandstone or quartzite (Tentatively quartz-rich sandstone (SiO₂-dominated); exact identification requires hardness and acid tests) — sedimentary

Rounded gray-brown cobble, likely weathered sandstone or quartzite

Tentatively quartz-rich sandstone (SiO₂-dominated); exact identification requires hardness and acid tests

Weathered chert or jasper nodule (Microcrystalline quartz (SiO₂), likely chalcedony/jasper with iron-oxide staining) — sedimentary

Weathered chert or jasper nodule

Microcrystalline quartz (SiO₂), likely chalcedony/jasper with iron-oxide staining

Foliated metamorphic rock, likely biotite schist (Mica schist, chiefly quartz, feldspar, and biotite mica) — metamorphic

Foliated metamorphic rock, likely biotite schist

Mica schist, chiefly quartz, feldspar, and biotite mica

Weathered vuggy quartz-rich rock (probable silicified limestone or quartz breccia) (Microcrystalline quartz (SiO₂) with calcite (CaCO₃), iron oxides, and minor clay minerals) — sedimentary

Weathered vuggy quartz-rich rock (probable silicified limestone or quartz breccia)

Microcrystalline quartz (SiO₂) with calcite (CaCO₃), iron oxides, and minor clay minerals

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Vuggy Chert / Silicified Limestone (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — sedimentary

Vuggy Chert / Silicified Limestone

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Banded Sandstone (Arenite (composed primarily of Quartz: SiO2)) — sedimentary

Banded Sandstone

Arenite (composed primarily of Quartz: SiO2)

Banded Siltstone (Siltstone (primarily SiO2 with Al2O3)) — sedimentary

Banded Siltstone

Siltstone (primarily SiO2 with Al2O3)

Red Sandstone (Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Petrified Wood (Silicon Dioxide Fossilized Wood (SiO2)) — fossil

Petrified Wood

Silicon Dioxide Fossilized Wood (SiO2)

Banded gneiss (weathered glacial erratic) (Gneiss; typically quartz–feldspar–biotite ± hornblende) — metamorphic

Banded gneiss (weathered glacial erratic)

Gneiss; typically quartz–feldspar–biotite ± hornblende

Jasper (Jasper (Cryptocrystalline variety of Quartz, SiO2)) — sedimentary

Jasper

Jasper (Cryptocrystalline variety of Quartz, SiO2)

Chert (includes Flint & Jasper) (Chert (Siliceous sedimentary rock, chemical formula SiO2)) — sedimentary

Chert (includes Flint & Jasper)

Chert (Siliceous sedimentary rock, chemical formula SiO2)

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

Chert / Flint

Chert (Silicon Dioxide, SiO2)

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

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

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

Chert (Jasper)

Silicon Dioxide (SiO2)

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

Chert / Jasper

Microcrystalline Quartz (SiO2)

Chert / Jasper (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Jasper

Cryptocrystalline Quartz (SiO2)

Sandstone (Quartzose / Feldspathic Sandstone) (Arenite (SiO2 principal matrix)) — sedimentary

Sandstone (Quartzose / Feldspathic Sandstone)

Arenite (SiO2 principal matrix)

Chert (containing Quartz/Chalcedony) (Silicon Dioxide (SiO2)) — sedimentary

Chert (containing Quartz/Chalcedony)

Silicon Dioxide (SiO2)

Mica Schist (Mica Schist (primarily Muscovite or Biotite)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite)

Iron-rich breccia (Hematite–goethite-rich ferruginous breccia, likely a lateritic ironstone) — sedimentary

Iron-rich breccia

Hematite–goethite-rich ferruginous breccia, likely a lateritic ironstone

Pebble (Clast (specifically a granule or small pebble)) — Sedimentary

Pebble

Clast (specifically a granule or small pebble)

Red Sandstone (Arenite (primarily Quartz with Hematite cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Likely polished dark stone or glassy mineral bead (Indeterminate; possibly obsidian, hematite, or a dark agate) — mineral

Likely polished dark stone or glassy mineral bead

Indeterminate; possibly obsidian, hematite, or a dark agate

Fossiliferous Shale Matrix (Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments) — sedimentary

Fossiliferous Shale Matrix

Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments

Red Sandstone (Arenite (with Iron Oxide / Hematite), Formula: SiO2 (Quartz) + Fe2O3 (Hematite coating)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite), Formula: SiO2 (Quartz) + Fe2O3 (Hematite coating)

River Rock (Fluvial Cobble (typically Quartzite or Sandstone)) — sedimentary

River Rock

Fluvial Cobble (typically Quartzite or Sandstone)