Rock Identifier

Category

Industrial Byproduct (Anthropogenic Rock Like Material)

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

Learn about Industrial Byproduct (Anthropogenic Rock Like Material) in the encyclopedia

Calc-Silicate Rock

Calc-Silicate Rock

Argillite

Dunite

Porcelanite

Felsite

Granulite

Metarhyolite

Limonite

Orbicular Granite

Orbicular Granite

Bauxite

Granodiorite

Metabasalt

Rough amber-like brown mineral specimen (Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber) — mineral

Rough amber-like brown mineral specimen

Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber

Quartzite River Stone (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Stone

Quartzite (primarily SiO2)

Pegmatite (Igneous Pegmatite (felsic intrusive rock)) — igneous

Pegmatite

Igneous Pegmatite (felsic intrusive rock)

Snowflake Obsidian (Volcanic glass containing Spherulitic Cristobalite (SiO2)) — igneous

Snowflake Obsidian

Volcanic glass containing Spherulitic Cristobalite (SiO2)

Quartzite with inclusions (Metamorphic Rock (Mainly SiO2)) — metamorphic

Quartzite with inclusions

Metamorphic Rock (Mainly SiO2)

Sandstone (likely Quartzose Sandstone) (Arenite (SiO2 principal composition)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (SiO2 principal composition)

Sandstone (with Iron concretions/staining) (Arenite (composed primarily of Quartz and Feldspar with Iron Oxide cement)) — sedimentary

Sandstone (with Iron concretions/staining)

Arenite (composed primarily of Quartz and Feldspar with Iron Oxide cement)

Schist (Lepidoblastic Mica Schist) — metamorphic

Schist

Lepidoblastic Mica Schist

Chert (and its variety Flint) (Silicon dioxide (SiO2) / Microcrystalline quartz) — sedimentary

Chert (and its variety Flint)

Silicon dioxide (SiO2) / Microcrystalline quartz

Fossilized Coral (Coquina/Limestone) (Cnidaria Anthozoa (Fossilized)) — sedimentary

Fossilized Coral (Coquina/Limestone)

Cnidaria Anthozoa (Fossilized)

Sandstone (likely Graywacke or Arkose variant) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (Lithic Sandstone)

Sandstone Pebble (Sandstone (SiO2 rich clastic rock)) — sedimentary

Sandstone Pebble

Sandstone (SiO2 rich clastic rock)

Basalt with Secondary Mineralization (Likely Zeolites or Calcite) (Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)) — igneous

Basalt with Secondary Mineralization (Likely Zeolites or Calcite)

Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)

Fossilized Shark Tooth (Chondrichthyes (Class)) — fossil

Fossilized Shark Tooth

Chondrichthyes (Class)

Petrified Wood (Silicified wood (SiO2)) — fossil

Petrified Wood

Silicified wood (SiO2)

Olivine (Peridot in gem form) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — mineral

Olivine (Peridot in gem form)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Sandstone (Banded) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Arenite (variable SiO2 composition)) — sedimentary

Sandstone

Arenite (variable SiO2 composition)

Septarian Nodule (Septarian Concretion (Calcite, Aragonite, Limestone)) — sedimentary

Septarian Nodule

Septarian Concretion (Calcite, Aragonite, Limestone)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Asphalt / Road Aggregate (Bituminous Conglomerate (synthetic)) — sedimentary

Asphalt / Road Aggregate

Bituminous Conglomerate (synthetic)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Sandstone (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartzose Sandstone)

Granodiorite (Phaneritic intrusive igneous rock) — igneous

Granodiorite

Phaneritic intrusive igneous rock

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Blue Sapphire (Raw) (Corundum (Al2O3)) — mineral

Blue Sapphire (Raw)

Corundum (Al2O3)

Banded Siltstone (Siltstone with planar bedding) — sedimentary

Banded Siltstone

Siltstone with planar bedding

Schist (Garnet-Mica Schist) (Garnet-Mica Schist) — metamorphic

Schist (Garnet-Mica Schist)

Garnet-Mica Schist

Pumice (Pumice (volcanic glass formed of highly vesicular rough textured rock)) — igneous

Pumice

Pumice (volcanic glass formed of highly vesicular rough textured rock)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Ferruginous Sandstone (Ironstone) (Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)) — sedimentary

Ferruginous Sandstone (Ironstone)

Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)

Chert (Jasper/Flint variant) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variant)

Microcrystalline quartz (SiO2)

Chert (Flint/Novaculite) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint/Novaculite)

Microcrystalline Quartz (SiO2)

Chert (variations include Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

Quartz (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Silicon Carbide (Carborundum) (Silicon Carbide (SiC)) — mineral

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Gravel / Crushed Stone (Aggregate (mixed mineral rock fragments)) — sedimentary

Gravel / Crushed Stone

Aggregate (mixed mineral rock fragments)

Granite (Pegmatitic) (Phaneritic Felsic Igneous Rock) — igneous

Granite (Pegmatitic)

Phaneritic Felsic Igneous Rock

Sandstone (specifically Red Sandstone) (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone (specifically Red Sandstone)

Arenite (primarily Quartz, SiO2)