Rock Identifier

Category

Antropogenic Rock (Man Made)

Browse antropogenic rock (man made) specimens identified by the Rock Identifier community.

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (specifically Iron-stained or Argillaceous Limestone) (Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities) — sedimentary

Limestone (specifically Iron-stained or Argillaceous Limestone)

Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Amethyst (Amethyst (SiO2 with Iron impurities)) — mineral

Amethyst

Amethyst (SiO2 with Iron impurities)

Sandstone (likely Arkose) (Arenite (composed mainly of SiO2 with Feldspar)) — sedimentary

Sandstone (likely Arkose)

Arenite (composed mainly of SiO2 with Feldspar)

Sandstone (Ferruginous) (Arenite (with Iron Oxide)) — sedimentary

Sandstone (Ferruginous)

Arenite (with Iron Oxide)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Slate (Slate (foliated metamorphic rock)) — metamorphic

Slate

Slate (foliated metamorphic rock)

Quartz Geode (Cracked Open) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Geode (Cracked Open)

Quartz (Silicon Dioxide - SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Hypersthene (Hypersthene ((Mg,Fe)SiO₃)) — Mineral

Hypersthene

Hypersthene ((Mg,Fe)SiO₃)

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

Sandstone

Arenite (composed mainly of SiO2)

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

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Breciated Limestone with Calcite Veins (Sedimentary Breccia (CaCO3)) — sedimentary

Breciated Limestone with Calcite Veins

Sedimentary Breccia (CaCO3)

Granodiorite with Biotite Mica (Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite Mica)) — igneous

Granodiorite with Biotite Mica

Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite Mica)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Basalt (River Pebble) (Basalt) — igneous

Basalt (River Pebble)

Basalt

Basalt Riverstone (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt Riverstone

Basalt (Aphanitic Mafic Volcanic Rock)

Basalt (River Rock Cobble) (Extrusive mafic igneous rock) — igneous

Basalt (River Rock Cobble)

Extrusive mafic igneous rock

Basalt with Vesicles (Vesicular Basalt) — igneous

Basalt with Vesicles

Vesicular Basalt

Serpentinite (often containing Jadeite/Nephrite) (Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4) — metamorphic

Serpentinite (often containing Jadeite/Nephrite)

Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4

Basalt (Extrusive mafic rock (Basalt)) — igneous

Basalt

Extrusive mafic rock (Basalt)

Vesicular Basalt with Amygdaloidal Infill (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Vesicular Basalt with Amygdaloidal Infill

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Basalt (composition of plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (composition of plagioclase, pyroxene, and olivine)

Basalt with Plagioclase Phenocrysts (Porphyritic Basalt) — igneous

Basalt with Plagioclase Phenocrysts

Porphyritic Basalt

Basalt (Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Basalt with Secondary Mineral Inclusions (Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)) — igneous

Basalt with Secondary Mineral Inclusions

Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)

Basalt (with possible weathering or secondary mineral crust) (Basalt (Aphanitic Mafic Igneous Rock)) — Igneous

Basalt (with possible weathering or secondary mineral crust)

Basalt (Aphanitic Mafic Igneous Rock)

Basalt (Beach Pebble) (Extrusive mafic volcanic rock) — igneous

Basalt (Beach Pebble)

Extrusive mafic volcanic rock

Vesicular Basalt (Basalt with secondary mineral infilling (Amygdaloidal Basalt)) — igneous

Vesicular Basalt

Basalt with secondary mineral infilling (Amygdaloidal Basalt)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt Pebble (Aphanitic Mafic Igneous Rock) — igneous

Basalt Pebble

Aphanitic Mafic Igneous Rock

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt River Pebble (Basalt) — igneous

Basalt River Pebble

Basalt

Basalt (Vesicular or Scoriaceous) (Aphanitic Mafic Volcanic Rock) — igneous

Basalt (Vesicular or Scoriaceous)

Aphanitic Mafic Volcanic Rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt with Hematite staining (Extrusive mafic igneous rock with Fe2O3) — igneous

Basalt with Hematite staining

Extrusive mafic igneous rock with Fe2O3

Basalt River Pebble (Basalt) — igneous

Basalt River Pebble

Basalt

Basalt River Cobble (Vitreous aphanitic Basalt) — igneous

Basalt River Cobble

Vitreous aphanitic Basalt

Basalt with Calcite Veining (Aphanitic Mafic Igneous Rock (Basalt) with CaCO3) — igneous

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (Basalt) with CaCO3