Rock Identifier

Category

Antropogenic Rock (Man Made)

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

Learn about Antropogenic Rock (Man Made) in the encyclopedia

Rock Gypsum

Coral Rock

Rock Salt

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Opalite

Map Jasper

Goldstone

Anorthosite

Gondite

Dunite

Brecciated Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Brecciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Granodiorite (Granodiorite (phaneritic intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (phaneritic intrusive igneous rock)

Likely flint (dark chert) (Microcrystalline quartz (SiO₂), commonly called chert or flint) — sedimentary

Likely flint (dark chert)

Microcrystalline quartz (SiO₂), commonly called chert or flint

Sandstone (Arenite (SiO2 composition dominant)) — sedimentary

Sandstone

Arenite (SiO2 composition dominant)

Unidentified gray stone/concrete-like fragment (Indeterminate; likely a fine-grained carbonate or cementitious geological fragment) — sedimentary

Unidentified gray stone/concrete-like fragment

Indeterminate; likely a fine-grained carbonate or cementitious geological fragment

Possible basalt or iron-rich slag (Basalt (tentative; identification uncertain from image)) — igneous

Possible basalt or iron-rich slag

Basalt (tentative; identification uncertain from image)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)

Chalk (Calcium carbonate (CaCO3)) — sedimentary

Chalk

Calcium carbonate (CaCO3)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

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

Chert (Chalcedony/Agate variety)

Silicon Dioxide (SiO2)

Tumbled chalcedony pendant (likely agate) (Chalcedony, microcrystalline quartz (SiO₂); the pale bands suggest agate) — gemstone

Tumbled chalcedony pendant (likely agate)

Chalcedony, microcrystalline quartz (SiO₂); the pale bands suggest agate

Red Sandstone (Quartz Arenite (iron-stained) / SiO2) — sedimentary

Red Sandstone

Quartz Arenite (iron-stained) / SiO2

Sandstone (Arenite (specifically sublithic or quartz arenite)) — sedimentary

Sandstone

Arenite (specifically sublithic or quartz arenite)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Limpets Shell / Fossil Specimen (Patellogastropoda (Class)) — fossil

Limpets Shell / Fossil Specimen

Patellogastropoda (Class)

Mica Schist (Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)) — metamorphic

Mica Schist

Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)

Natural Pearl (Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3) — mineral

Natural Pearl

Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3

Chalk (Carbonate rock (mainly CaCO3)) — sedimentary

Chalk

Carbonate rock (mainly CaCO3)

Fossiliferous Limestone with Crinoid Stem (Sedimentary Rock with Crinoidea Fossil) — fossil

Fossiliferous Limestone with Crinoid Stem

Sedimentary Rock with Crinoidea Fossil

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Sandstone (Pebble) (Sandstone (SiO2 with matrix/cement)) — sedimentary

Sandstone (Pebble)

Sandstone (SiO2 with matrix/cement)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Chert (and Agate/Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (and Agate/Chalcedony)

Microcrystalline Quartz (SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Quartz Sandstone Pebble (Sandstone (SiO2 dominated)) — sedimentary

Quartz Sandstone Pebble

Sandstone (SiO2 dominated)

Aura Quartz (Anomalously Coated Quartz) (Silicon Dioxide (SiO2) treated with vaporized metals) — mineral

Aura Quartz (Anomalously Coated Quartz)

Silicon Dioxide (SiO2) treated with vaporized metals

Brown chert (flint) (Microcrystalline quartz (SiO₂), varieties called chert or flint) — sedimentary

Brown chert (flint)

Microcrystalline quartz (SiO₂), varieties called chert or flint

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Amber-set ring (Amber (fossilized plant resin; organic mineraloid), set in a metal ring) — gemstone

Amber-set ring

Amber (fossilized plant resin; organic mineraloid), set in a metal ring

Granite (Granite (Silicic Intrusive Igneous Rock)) — Igneous

Granite

Granite (Silicic Intrusive Igneous Rock)

Tumbled brown chalcedony or agate (Microcrystalline quartz (SiO₂), likely chalcedony; possibly iron-stained jasper or agate) — gemstone

Tumbled brown chalcedony or agate

Microcrystalline quartz (SiO₂), likely chalcedony; possibly iron-stained jasper or agate

Pumice or vesicular volcanic tuff (Pumice: highly vesicular volcanic glass, chiefly rhyolitic to dacitic; possible tuff: lithified ash and pumice fragments) — igneous

Pumice or vesicular volcanic tuff

Pumice: highly vesicular volcanic glass, chiefly rhyolitic to dacitic; possible tuff: lithified ash and pumice fragments

Pink Granite (Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)

Coquina / Fossiliferous Limestone (Calcareous bioclastic sedimentary rock (CaCO3)) — sedimentary

Coquina / Fossiliferous Limestone

Calcareous bioclastic sedimentary rock (CaCO3)

Chert Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Quartz (SiO2)

Granite (Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)) — igneous

Granite

Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)

Asphalt aggregate (crushed stone in bitumen) (Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen) — sedimentary

Asphalt aggregate (crushed stone in bitumen)

Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen

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

Chert (Flint / Jasper)

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 based typically)) — sedimentary

Sandstone

Arenite (SiO2 based typically)