Rock Identifier

Category

Industrial Byproduct (Anthropogenic Material)

Browse industrial byproduct (anthropogenic material) specimens identified by the Rock Identifier community.

Learn about Industrial Byproduct (Anthropogenic Material) in the encyclopedia

Adirondack Garnet

Adirondack Garnet

Peat

Almandine Garnet

Almandine Garnet

Dunite

Limonite

Shell Opal

Madagascar Opal

Lavender Obsidian

Electric Blue Obsidian

Orange Obsidian

Diamond

Metarhyolite

Sandstone (Red/Brown) (Arenite (SiO2 dominated with iron oxides)) — sedimentary

Sandstone (Red/Brown)

Arenite (SiO2 dominated with iron oxides)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Peridot (Olivine) (Olivine ((Mg, Fe)2SiO4)) — mineral

Peridot (Olivine)

Olivine ((Mg, Fe)2SiO4)

Moissanite (Silicon Carbide (SiC)) — mineral

Moissanite

Silicon Carbide (SiC)

Red Sandstone (Arenite (with Iron Oxide pigmentation)) — Sedimentary

Red Sandstone

Arenite (with Iron Oxide pigmentation)

Quartzite (Gold/Tan River Cobble) (Quartzite (composed primarily of crystalline SiO2)) — metamorphic

Quartzite (Gold/Tan River Cobble)

Quartzite (composed primarily of crystalline SiO2)

Diamond (or Diamond Simulant) (Carbon (C)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C)

Diamond (Cut Gemstone) (Carbon (C)) — gemstone

Diamond (Cut Gemstone)

Carbon (C)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Polished kambaba jasper (Orbicular stromatolitic jasper; microcrystalline quartz (SiO₂) with chlorite/amphibole-rich inclusions) — sedimentary

Polished kambaba jasper

Orbicular stromatolitic jasper; microcrystalline quartz (SiO₂) with chlorite/amphibole-rich inclusions

Crushed Stone / Gravel (Aggregatus saxum (variable mineral composition)) — sedimentary

Crushed Stone / Gravel

Aggregatus saxum (variable mineral composition)

Gravel or Crushed Stone (Fragmented Aggregate Stone) — sedimentary or igneous fragment

Gravel or Crushed Stone

Fragmented Aggregate Stone

sedimentary or igneous fragment

Diamond (Natural Diamond (Carbon, C)) — mineral

Diamond

Natural Diamond (Carbon, C)

Peridotite (Olivine Rock) (Peridotite (composed largely of olivine, (Mg, Fe)2SiO4)) — igneous

Peridotite (Olivine Rock)

Peridotite (composed largely of olivine, (Mg, Fe)2SiO4)

Planet Earth (Gaia (Silicate Terrestrial Planet)) — metamorphic

Planet Earth

Gaia (Silicate Terrestrial Planet)

Chert (often called Jasper or Flint in this color variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (often called Jasper or Flint in this color variety)

Silicon Dioxide (SiO2)

Opalite (Man-made Glass (SiO2 + additives)) — mineraloid (synthetic)

Opalite

Man-made Glass (SiO2 + additives)

mineraloid (synthetic)

Asphalt Concrete (Bituminous Concrete) (Bituminous aggregate) — sedimentary

Asphalt Concrete (Bituminous Concrete)

Bituminous aggregate

Iron meteorite fragment (Fe-Ni meteorite, likely an iron meteorite or stony-iron fragment) — meteorite

Iron meteorite fragment

Fe-Ni meteorite, likely an iron meteorite or stony-iron fragment

Chert (containing Flint nodules) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (containing Flint nodules)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Diamond (Faceted Gemstone) (Native Carbon (C)) — mineral

Diamond (Faceted Gemstone)

Native Carbon (C)

Tumbled blue sodalite (probable) (Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂) — mineral

Tumbled blue sodalite (probable)

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Conglomeratic breccia (Clast-supported polymictic conglomerate/breccia, cemented by silica- or carbonate-rich matrix) — sedimentary

Conglomeratic breccia

Clast-supported polymictic conglomerate/breccia, cemented by silica- or carbonate-rich matrix

Quartz geode (likely amethyst-bearing) (Silica geode; quartz, SiO₂, with possible amethyst and minor iron oxides) — mineral

Quartz geode (likely amethyst-bearing)

Silica geode; quartz, SiO₂, with possible amethyst and minor iron oxides

Sandstone with Iron Staining (Arenite (SiO2 with FeO(OH) impurities)) — sedimentary

Sandstone with Iron Staining

Arenite (SiO2 with FeO(OH) impurities)

Chalcedony (Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)) — mineral

Chalcedony

Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)

Garnet (Rough Almandine Crystal) (Almandine Garnet (Fe3Al2(SiO4)3)) — mineral

Garnet (Rough Almandine Crystal)

Almandine Garnet (Fe3Al2(SiO4)3)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (SiO2 (Metamorphosed Sandstone)) — metamorphic

Quartzite

SiO2 (Metamorphosed Sandstone)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Quartz Vein in Metamorphic Rock (Silicon Dioxide (SiO2) within Metasedimentary host) — metamorphic

Quartz Vein in Metamorphic Rock

Silicon Dioxide (SiO2) within Metasedimentary host

Sandstone (likely Quartzite-rich) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely Quartzite-rich)

Arenite (primarily SiO2)

Schist (with Iron Oxide) (Mica Schist) — metamorphic

Schist (with Iron Oxide)

Mica Schist

Diamond (Diamond (pure carbon, C)) — gemstone

Diamond

Diamond (pure carbon, C)

Tumbled blue-dyed stone, likely basalt or blue aventurine (Likely fine-grained basalt (plagioclase and pyroxene), possibly coated or dyed; exact identification requires testing) — igneous

Tumbled blue-dyed stone, likely basalt or blue aventurine

Likely fine-grained basalt (plagioclase and pyroxene), possibly coated or dyed; exact identification requires testing

Conglomerate (Clastic Sedimentary Rock (Conglomerate)) — sedimentary

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Greywacke (Sandstone) (Lithic wacke) — sedimentary

Greywacke (Sandstone)

Lithic wacke

Grooved Maun Ball (Maul/Hammerstone-like Concretion) (Calcareous/Ferruginous Concretion in Sandstone Matrix) — sedimentary

Grooved Maun Ball (Maul/Hammerstone-like Concretion)

Calcareous/Ferruginous Concretion in Sandstone Matrix

Dacite (Dacite (intermediate volcanic rock high in silica)) — igneous

Dacite

Dacite (intermediate volcanic rock high in silica)