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 (likely Ferruginous) (Sandstone (SiO2 with iron oxides)) — sedimentary

Sandstone (likely Ferruginous)

Sandstone (SiO2 with iron oxides)

Siltstone Pebble (Siltstone (fine-grained siliciclastic sedimentary rock)) — sedimentary

Siltstone Pebble

Siltstone (fine-grained siliciclastic sedimentary rock)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Sandstone (likely Arkose or Quartz Sandstone) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (likely Arkose or Quartz Sandstone)

Clastic sedimentary rock (primarily SiO2)

Coquina Limestone (Coquina (Calcium Carbonate, CaCO3)) — sedimentary

Coquina Limestone

Coquina (Calcium Carbonate, CaCO3)

Tumbled brown agate (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions) — mineral

Tumbled brown agate

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Black Tourmaline (Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH,F,O)4)) — mineral

Black Tourmaline

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH,F,O)4)

Limestone (Calcium carbonate (CaCO3)) — sedimentary

Limestone

Calcium carbonate (CaCO3)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Pumice (Pumice (Felsic vesicular volcanic glass)) — igneous

Pumice

Pumice (Felsic vesicular volcanic glass)

Raw Sapphire / Corundum (Corundum (Al2O3 - Aluminium oxide)) — mineral

Raw Sapphire / Corundum

Corundum (Al2O3 - Aluminium oxide)

Schist (Schist (containing Quartz, Mica, and Amphibole)) — metamorphic

Schist

Schist (containing Quartz, Mica, and Amphibole)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Raw Garnet Fragment (Nesosilicate Group (e.g., Almandine, Fe3Al2(SiO4)3)) — mineral

Raw Garnet Fragment

Nesosilicate Group (e.g., Almandine, Fe3Al2(SiO4)3)

Garnet Schist (Garnet-bearing Mica Schist) — metamorphic

Garnet Schist

Garnet-bearing Mica Schist

Schist (Mica Schist) — Metamorphic Rock

Schist

Mica Schist

Metamorphic Rock

Polished brecciated jasper (Jasper, opaque microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions) — gemstone

Polished brecciated jasper

Jasper, opaque microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions

Tumbled milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Fossilized bivalve shell (Bivalvia (likely a venerid or similar clam); shell composed mainly of CaCO₃ as aragonite/calcite) — fossil

Fossilized bivalve shell

Bivalvia (likely a venerid or similar clam); shell composed mainly of CaCO₃ as aragonite/calcite

Fossil crinoid stem segment (columnal) (Crinoidea; commonly preserved as calcite ossicles, often called entrocrinite) — fossil

Fossil crinoid stem segment (columnal)

Crinoidea; commonly preserved as calcite ossicles, often called entrocrinite

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

Agate

Silicon Dioxide (Chalcedony), SiO2

Limestone (Sedimentary rock composed primarily of calcium carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary rock composed primarily of calcium carbonate (CaCO3)

Pegmatite (Igneous Pegmatite (Granitic Composition)) — igneous

Pegmatite

Igneous Pegmatite (Granitic Composition)

Bornite (Cu5FeS4) — mineral

Bornite

Cu5FeS4

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

Agate

Silicon dioxide (Chalcedony), SiO2

Granitic Pegmatite (Pegmatitic Granite) — igneous

Granitic Pegmatite

Pegmatitic Granite

Tumbled Agate (Silicon Dioxide (SiO2)) — mineral

Tumbled Agate

Silicon Dioxide (SiO2)

Pink Sapphire (Corundum (Al2O3 with chromium and iron traces)) — gemstone

Pink Sapphire

Corundum (Al2O3 with chromium and iron traces)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

River Pebble (Gneiss/Schist mix) (Metamorphic rock aggregate) — metamorphic

River Pebble (Gneiss/Schist mix)

Metamorphic rock aggregate

White Quartz (Carved Heart) (Silicon Dioxide (SiO2)) — mineral

White Quartz (Carved Heart)

Silicon Dioxide (SiO2)

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Sapphire (Corundum (Al2O3)) — gemstone

Sapphire

Corundum (Al2O3)

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Quartz (Milky or Smoky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Smoky)

Silicon Dioxide (SiO2)

Anthracite Coal (Anthracite (Hard Coal)) — metamorphic

Anthracite Coal

Anthracite (Hard Coal)

Diamond (Faceted) (Carbon (C)) — gemstone

Diamond (Faceted)

Carbon (C)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)