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.

Quartz Geode (with possible Manganese or Goethite coating) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (with possible Manganese or Goethite coating)

Silicon Dioxide (SiO2)

Marble (White) (Metamorphosed Limestone (mainly CaCO3)) — metamorphic

Marble (White)

Metamorphosed Limestone (mainly CaCO3)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Fluorite (Fluoride (Calcium Fluoride - CaF2)) — mineral

Fluorite

Fluoride (Calcium Fluoride - CaF2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

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

Red Hematite

Iron(III) oxide (Fe2O3)

Bauxite (Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)) — sedimentary

Bauxite

Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Coal (Bituminous or Anthracite coal (carbon-rich sedimentary rock)) — sedimentary

Coal

Bituminous or Anthracite coal (carbon-rich sedimentary rock)

Dendritic Agate (Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)) — mineral

Dendritic Agate

Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)

Limonite (Iron Ore) (FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)

Obsidian (Volcanic glass (high silica content based on SiO2)) — igneous

Obsidian

Volcanic glass (high silica content based on SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Chert (Jasper variation) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper variation)

Silicon dioxide (SiO2)

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

Jasper (specifically Yellow/Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Pink Opal (Amorphous Hydrous Silica (SiO2·nH2O)) — mineral

Pink Opal

Amorphous Hydrous Silica (SiO2·nH2O)

Shale or Siltstone (Sedimentary Rock (Siliciclastic)) — sedimentary

Shale or Siltstone

Sedimentary Rock (Siliciclastic)

Red Sandstone (Arenite (primarily Quartz, SiO2, with Iron Oxide cementing agent)) — sedimentary

Red Sandstone

Arenite (primarily Quartz, SiO2, with Iron Oxide cementing agent)

Sandstone (Greywacke) (Clastic Sedimentary Rock (SiO2 with lithic fragments)) — sedimentary

Sandstone (Greywacke)

Clastic Sedimentary Rock (SiO2 with lithic fragments)

Clear Quartz Crystal (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Ferruginous Sandstone (with possible Epidote/Chlorite coloring) (Sandstone (SiO2 dominated with Fe2O3 staining)) — sedimentary

Ferruginous Sandstone (with possible Epidote/Chlorite coloring)

Sandstone (SiO2 dominated with Fe2O3 staining)

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Halite (Rock Salt) (Halite (Sodium Chloride, NaCl)) — mineral

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Quartz (with iron oxide staining) (Silicon Dioxide (SiO2)) — mineral

Quartz (with iron oxide staining)

Silicon Dioxide (SiO2)

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

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

River Rock (likely Siltstone or fine-grained Sandstone) (Clastic Sedimentary Rock) — sedimentary

River Rock (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartz / Common Opal (Silicon Dioxide (SiO2)) — mineral

Quartz / Common Opal

Silicon Dioxide (SiO2)

Kyanite in Quartz (Kyanite (Al2SiO5) with Quartz (SiO2) matrix) — metamorphic

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2) matrix

Sandstone with Manganese Dendrites/Oxide coatings (Arenite with Pyrolusite and Romanechite (MnO2)) — sedimentary

Sandstone with Manganese Dendrites/Oxide coatings

Arenite with Pyrolusite and Romanechite (MnO2)

Quartz (Smoky/Milky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Ferruginous Sandstone (Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)) — sedimentary

Ferruginous Sandstone

Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)

Limonite (Iron Ore) (FeO(OH)·nH2O (Hydrous ferric oxide)) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)