Rock Identifier

Category

Industrial Byproduct

Browse industrial byproduct specimens identified by the Rock Identifier community.

Learn about Industrial Byproduct in the encyclopedia

Adirondack Garnet

Adirondack Garnet

Almandine Garnet

Almandine Garnet

Diatomaceous Earth

Diatomaceous Earth

Tripolite

Tripolite

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Diamond (set in jewelry) (Diamond (Carbon, C)) — mineral

Diamond (set in jewelry)

Diamond (Carbon, C)

Quartz (Granular Milky Quartz fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Granular Milky Quartz fragment)

Silicon Dioxide (SiO2)

Magnetite with Serpentine (Magnetite (Fe3O4) in Serpentine Matrix) — mineral

Magnetite with Serpentine

Magnetite (Fe3O4) in Serpentine Matrix

Pyrope Garnet (Bohemian Garnets) (Pyrope (from the group Mg3Al2(SiO4)3)) — mineral

Pyrope Garnet (Bohemian Garnets)

Pyrope (from the group Mg3Al2(SiO4)3)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Schist (Crystalline Schist (often containing Muscovite, Biotte, or Quartz)) — metamorphic

Schist

Crystalline Schist (often containing Muscovite, Biotte, or Quartz)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

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

Diamond

Diamond (pure Carbon, C)

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

Corundum (Sapphire variant) (Aluminium oxide (Al2O3)) — mineral

Corundum (Sapphire variant)

Aluminium oxide (Al2O3)

Chert (Nodule) (Chert (Silica, SiO2)) — sedimentary

Chert (Nodule)

Chert (Silica, SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

Rough Ruby (Corundum (Al2O3) with Chromium traces) — mineral

Rough Ruby

Corundum (Al2O3) with Chromium traces

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

Polished Chert (Flint)

Silicon Dioxide (SiO2)

Ruby (in jewelry) (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby (in jewelry)

Corundum (Al2O3 with Chromium traces)

Epidote (Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)) — mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

Quartzite River Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite River Pebble

Metamorphic Quartzite (SiO2)

Olivine in Basalt matrix (Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)) — igneous

Olivine in Basalt matrix

Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)

Garnet-bearing Schist (Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist) — metamorphic

Garnet-bearing Schist

Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist

Banded Iron Formation (BIF) (Banded Iron Formation (predominantly Hematite, Magnetite, and Chert/Quartz)) — sedimentary

Banded Iron Formation (BIF)

Banded Iron Formation (predominantly Hematite, Magnetite, and Chert/Quartz)

Banded Sandstone (Quartzite-rich) (Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)) — sedimentary

Banded Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)

Olivine (often within Peridotite) (Magnesium iron silicate, (Mg,Fe)2SiO4) — mineral

Olivine (often within Peridotite)

Magnesium iron silicate, (Mg,Fe)2SiO4

Crushed Limestone (Sedimentary Carbonate Rock (CaCO3)) — sedimentary

Crushed Limestone

Sedimentary Carbonate Rock (CaCO3)

Chert (Jasper/Flint variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Schist (Micaceous) (Mica Schist) — metamorphic

Schist (Micaceous)

Mica Schist

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

Diamond

Diamond (pure Carbon, C)

Beach Quartzite (Yellow-stained Quartz) (Quartzite (SiO2 with Iron oxide staining)) — metamorphic

Beach Quartzite (Yellow-stained Quartz)

Quartzite (SiO2 with Iron oxide staining)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Yellow Quartz (Citrine or Quartz Crystal with Iron Inclusions) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Quartz Crystal with Iron Inclusions)

Silicon Dioxide (SiO2)

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

Peridot (Olivine)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Marble (Recrystallized Calcite Rock (CaCO3)) — metamorphic

Marble

Recrystallized Calcite Rock (CaCO3)

Quartz (Sunstone-like Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Sunstone-like Chalcedony)

Silicon Dioxide (SiO2)

Rough Blue Sapphire (Corundum (Al2O3)) — mineral

Rough Blue Sapphire

Corundum (Al2O3)

Chert (specifically a nodule with Chalcendony/Agate banding) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically a nodule with Chalcendony/Agate banding)

Microcrystalline Quartz (SiO2)

Magnetite / Ironstone (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite / Ironstone

Iron(II,III) oxide (Fe3O4)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Chert (Flint Nodule) (Microcrystalline or cryptocrystalline quartz (SiO2)) — sedimentary

Chert (Flint Nodule)

Microcrystalline or cryptocrystalline quartz (SiO2)

Red Sandstone (Old Red Sandstone Pebble) (Arenite with iron oxide (Fe2O3) cement) — sedimentary

Red Sandstone (Old Red Sandstone Pebble)

Arenite with iron oxide (Fe2O3) cement