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

Tripolite

Diatomaceous Earth

Anthracite (Anthracite coal) — metamorphic

Anthracite

Anthracite coal

Basalt pebble (Basalt) — igneous

Basalt pebble

Basalt

Pumice (Pumice (a highly vesicular, silicic volcanic rock)) — igneous

Pumice

Pumice (a highly vesicular, silicic volcanic rock)

Kaolinite (Kaolin) (Kaolinite (Al2Si2O5(OH)4)) — mineral

Kaolinite (Kaolin)

Kaolinite (Al2Si2O5(OH)4)

Perlite (Unexpanded) (Amorphous volcanic glass) — igneous

Perlite (Unexpanded)

Amorphous volcanic glass

Gray Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Gray Limestone

Calcium Carbonate (CaCO3)

Conglomerate (Conglomerate (Clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Clastic sedimentary rock)

Anthracite Coal (Anthracite coal (High-rank coal)) — sedimentary

Anthracite Coal

Anthracite coal (High-rank coal)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Shale (Shale (claystone/mudstone)) — sedimentary

Shale

Shale (claystone/mudstone)

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Granite and Igneous Mix (Phaneritic Felsic to Mafic Intrusive Rocks) — igneous

Granite and Igneous Mix

Phaneritic Felsic to Mafic Intrusive Rocks

Basalt (Mafic volcanic rock) — igneous

Basalt

Mafic volcanic rock

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Pumice (Pumice (volcanic glass froth)) — igneous

Pumice

Pumice (volcanic glass froth)

Andesite (Andesite (Intermediate Extrusive Volcanic Rock)) — igneous

Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Bauxite (Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)) — sedimentary

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Granodiorite / Granite (Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)) — igneous

Granodiorite / Granite

Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)

Bauxite (Bauxite (mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))) — sedimentary

Bauxite

Bauxite (mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Limestone

Limestone (Calcium Carbonate, CaCO3)

Basalt River Stone (Basaltic Igneous Rock) — igneous

Basalt River Stone

Basaltic Igneous Rock

Basalt (Basalt (Volcanic Mafic Rock)) — igneous

Basalt

Basalt (Volcanic Mafic Rock)

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

Vesicular Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Smoky quartz (Quartz (SiO₂), smoky variety) — mineral

Smoky quartz

Quartz (SiO₂), smoky variety

Milky quartz pebble (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz pebble

Quartz, silicon dioxide (SiO₂)

Rounded river pebble, likely quartz-rich stone (Unidentified lithic clast; exact mineralogy cannot be determined from the image) — sedimentary

Rounded river pebble, likely quartz-rich stone

Unidentified lithic clast; exact mineralogy cannot be determined from the image

Iron-stained quartz crystal cluster (Quartz (SiO₂), likely stained by iron oxides) — mineral

Iron-stained quartz crystal cluster

Quartz (SiO₂), likely stained by iron oxides

Small reddish-brown mineral fragment, likely quartz-bearing rock (Indeterminate; possibly iron-stained quartz or feldspar-rich stone) — mineral

Small reddish-brown mineral fragment, likely quartz-bearing rock

Indeterminate; possibly iron-stained quartz or feldspar-rich stone

Smooth river pebble (exact rock type indeterminate) (Unidentified rounded lithic clast; composition cannot be determined from the photograph) — sedimentary

Smooth river pebble (exact rock type indeterminate)

Unidentified rounded lithic clast; composition cannot be determined from the photograph

Milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz

Quartz, silicon dioxide (SiO₂)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Amber cabochon pendant (Amber (fossilized tree resin; chiefly polymerized terpenoids)) — gemstone

Amber cabochon pendant

Amber (fossilized tree resin; chiefly polymerized terpenoids)

Red garnet stud earrings (likely garnet) (Garnet group; most likely almandine, Fe₃Al₂(SiO₄)₃. The image alone cannot confirm the stone or whether it is natural.) — gemstone

Red garnet stud earrings (likely garnet)

Garnet group; most likely almandine, Fe₃Al₂(SiO₄)₃. The image alone cannot confirm the stone or whether it is natural.

Tumbled black stone, possibly black tourmaline (Uncertain from the photo; possible schorl (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)) — mineral

Tumbled black stone, possibly black tourmaline

Uncertain from the photo; possible schorl (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Possible polished or tumbled stone (Unidentified; the image does not show enough detail to determine its composition) — mineral

Possible polished or tumbled stone

Unidentified; the image does not show enough detail to determine its composition

Weathered orange-brown stone, possibly iron-stained sandstone (Unconfirmed; likely quartz-rich sandstone with iron-oxide staining) — sedimentary

Weathered orange-brown stone, possibly iron-stained sandstone

Unconfirmed; likely quartz-rich sandstone with iron-oxide staining

Smooth gray pebbles (Unidentified rounded rock fragments; composition cannot be determined from the image) — igneous

Smooth gray pebbles

Unidentified rounded rock fragments; composition cannot be determined from the image

Weathered rock pebble, possibly quartz-rich sandstone (Uncertain from the image; likely quartz-bearing sandstone with iron-oxide staining) — sedimentary

Weathered rock pebble, possibly quartz-rich sandstone

Uncertain from the image; likely quartz-bearing sandstone with iron-oxide staining

Amazonite pendant (Amazonite, a green variety of microcline feldspar (KAlSi₃O₈)) — mineral

Amazonite pendant

Amazonite, a green variety of microcline feldspar (KAlSi₃O₈)

Polished tektite (likely indochinite) (Natural silica-rich impact glass; mainly SiO₂ with Al₂O₃, FeO, MgO, CaO, and Na₂O) — mineral

Polished tektite (likely indochinite)

Natural silica-rich impact glass; mainly SiO₂ with Al₂O₃, FeO, MgO, CaO, and Na₂O