Rock Identifier

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Industrial Byproduct

Browse industrial byproduct specimens identified by the Rock Identifier community.

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Adirondack Garnet

Adirondack Garnet

Almandine Garnet

Almandine Garnet

Tripolite

Diatomaceous Earth

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

Peridot (Olivine)

Olivine ((Mg, Fe)2SiO4)

mineral
Sandstone (Arenite (Sandstone)) — sedimentary

Sandstone

Arenite (Sandstone)

sedimentary
Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

gemstone
Schist (Schist (Crystalline metamorphic rock)) — metamorphic

Schist

Schist (Crystalline metamorphic rock)

metamorphic
Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)

metamorphic
Magnetite / Ironstone Pebble (Magnetite (Fe3O4)) — mineral

Magnetite / Ironstone Pebble

Magnetite (Fe3O4)

mineral
Basalt Pebble (Basalt (Mafic volcanic rock)) — igneous

Basalt Pebble

Basalt (Mafic volcanic rock)

igneous
Peridotite (Dunite) (Olivine-rich Peridotite ((Mg,Fe)2SiO4)) — igneous

Peridotite (Dunite)

Olivine-rich Peridotite ((Mg,Fe)2SiO4)

igneous
Quartz (Iron-Stained or Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained or Milky)

Silicon Dioxide (SiO2)

mineral
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Tumbled Agate and Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Tumbled Agate and Chalcedony

Cryptocrystalline Quartz (SiO2)

mineral
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Gold-bearing Quartz Ore (Auriferous Quartz (SiO2 with Au)) — mineral

Gold-bearing Quartz Ore

Auriferous Quartz (SiO2 with Au)

mineral
Pegmatite (Granitic) with Tourmaline (Granitic Pegmatite (containing Schorl and Quartz)) — igneous

Pegmatite (Granitic) with Tourmaline

Granitic Pegmatite (containing Schorl and Quartz)

igneous
Basalt (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

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

Granite (Pegmatitic)

Phaneritic Felsic Igneous Rock

igneous
Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

mineral
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

metamorphic
Quartz Pebble (Water-worn Quartzite) (Silicon Dioxide (SiO2)) — metamorphic

Quartz Pebble (Water-worn Quartzite)

Silicon Dioxide (SiO2)

metamorphic
Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)

metamorphic
Chert (Quartz Variety) (Microcrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (Quartz Variety)

Microcrystalline Silicon Dioxide (SiO2)

sedimentary
Clear Quartz Crystal (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

mineral
Sandstone (Banded) (Clastic Sedimentary Rock (composed of SiO2, CaCO3, or Fe2O3 cement)) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock (composed of SiO2, CaCO3, or Fe2O3 cement)

sedimentary
Ruby, Emerald, and Sapphire (Corundum and Beryl) (Corundum (Al2O3) and Beryl (Be3Al2Si6O18)) — mineral

Ruby, Emerald, and Sapphire (Corundum and Beryl)

Corundum (Al2O3) and Beryl (Be3Al2Si6O18)

mineral
Pink Orthoclase Feldspar with Dendrites (Orthoclase (KAlSi3O8) with Manganese Oxide dendrites) — mineral

Pink Orthoclase Feldspar with Dendrites

Orthoclase (KAlSi3O8) with Manganese Oxide dendrites

mineral
Coal (Bituminous) (Organic sedimentary rock primarily consisting of carbon (C)) — sedimentary

Coal (Bituminous)

Organic sedimentary rock primarily consisting of carbon (C)

sedimentary
Rhodolite Garnet (Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)) — mineral

Rhodolite Garnet

Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)

mineral
Sandstone (Weathered Pebble) (Arenite (SiO2 primarily)) — sedimentary

Sandstone (Weathered Pebble)

Arenite (SiO2 primarily)

sedimentary
Sandstone (Arenite (specifically Quartz Arenite)) — sedimentary

Sandstone

Arenite (specifically Quartz Arenite)

sedimentary
Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

metamorphic
Coal (Anthracite or Bituminous) (Lithified plant matter (Carbon)) — sedimentary

Coal (Anthracite or Bituminous)

Lithified plant matter (Carbon)

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

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

sedimentary
Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Flesh-colored Quartzite (Quartzite (SiO2)) — metamorphic

Flesh-colored Quartzite

Quartzite (SiO2)

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

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Fossiliferous Limestone with Crinoid Stem fragment (Calcite (CaCO3) containing Crinoidea fossils) — sedimentary

Fossiliferous Limestone with Crinoid Stem fragment

Calcite (CaCO3) containing Crinoidea fossils

sedimentary
Ruby and Diamond Heart Pendant (Corundum (Al2O3) and Diamond (C)) — mineral

Ruby and Diamond Heart Pendant

Corundum (Al2O3) and Diamond (C)

mineral
Pyrope Garnet (Magnesium aluminum silicate (Mg3Al2Si3O12)) — mineral

Pyrope Garnet

Magnesium aluminum silicate (Mg3Al2Si3O12)

mineral
Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

mineral
Chalcedony Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Chalcedony Geode Fragment

Silicon Dioxide (SiO2)

mineral