Rock Identifier

Category

Industrial By Product

Browse industrial by product specimens identified by the Rock Identifier community.

Learn about Industrial By Product in the encyclopedia

Adirondack Garnet

Adirondack Garnet

Brazilian Agate

Brazilian Agate

Almandine Garnet

Almandine Garnet

Tripolite

Diatomaceous Earth

Vanadium Tourmaline

Vanadium Tourmaline

Cat's Eye Obsidian

Seam Agate

Perthite

Orange Tourmaline

Orange Tourmaline

Pink Agate

Purple Agate

Pegmatite (Quartz and Feldspar) (Igneous Pegmatite containing SiO2 and KAlSi3O8) — igneous

Pegmatite (Quartz and Feldspar)

Igneous Pegmatite containing SiO2 and KAlSi3O8

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

Agate

Silicon dioxide (Chalcedony), SiO2

Coal (Bituminous Coal / Anthracite) — sedimentary

Coal

Bituminous Coal / Anthracite

Coal (Bituminous Coal / Anthracite) — sedimentary

Coal

Bituminous Coal / Anthracite

Garnet (Almandine/Pyrope Garnet (Silicate Mineral Group)) — mineral

Garnet

Almandine/Pyrope Garnet (Silicate Mineral Group)

Almandine Garnet (Almandine, Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Sandstone Pebble (Arenite (Siliclastic sedimentary rock)) — sedimentary

Sandstone Pebble

Arenite (Siliclastic sedimentary rock)

Quartzite Pebble (Metamorphosed Silicon Dioxide (SiO2)) — metamorphic

Quartzite Pebble

Metamorphosed Silicon Dioxide (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Gold-bearing Quartz / Auriferous River Rock (Lode Gold in Quartz Matrix (SiO2 + Au)) — sedimentary

Gold-bearing Quartz / Auriferous River Rock

Lode Gold in Quartz Matrix (SiO2 + Au)

Quartzite with Quartz Veining (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

Quartzite with Quartz Veining

Metamorphosed Quartz-rich Sandstone (SiO2)

Peridotite (Olivine Rock) (Peridotite (composed largely of olivine, (Mg, Fe)2SiO4)) — igneous

Peridotite (Olivine Rock)

Peridotite (composed largely of olivine, (Mg, Fe)2SiO4)

Garnet (Almandine) (Almandine (Fe3Al2(SiO4)3)) — mineral

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Red Sandstone (Ferruginous Sandstone (SiO2 dominated with Fe2O3)) — sedimentary

Red Sandstone

Ferruginous Sandstone (SiO2 dominated with Fe2O3)

Lava Rock (Basaltic Scoria) (Vesicular Basalt) — igneous

Lava Rock (Basaltic Scoria)

Vesicular Basalt

Garnet in Quartzite (Garnet-bearing Quartzite (SiO2 + X3Y2(SiO4)3)) — metamorphic

Garnet in Quartzite

Garnet-bearing Quartzite (SiO2 + X3Y2(SiO4)3)

Red Sandstone (Sandstone (lithic arenite or arkose with iron oxide)) — sedimentary

Red Sandstone

Sandstone (lithic arenite or arkose with iron oxide)

Quartzite Pebble (SiO2 (Silicon Dioxide)) — metamorphic

Quartzite Pebble

SiO2 (Silicon Dioxide)

Basalt (Weathered) (Mafic Igneous Rock) — igneous

Basalt (Weathered)

Mafic Igneous Rock

Black Tourmaline (Schorl) (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline (Schorl)

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Diamond (or Diamond Simulant) (Carbon (C)) — mineral

Diamond (or Diamond Simulant)

Carbon (C)

Smoky Quartz (Rough) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (Rough)

Silicon Dioxide (SiO2)

Sandstone (likely Siltstone or Mudstone) (Clastic sedimentary rock (primarily SiO2 with various oxides)) — sedimentary

Sandstone (likely Siltstone or Mudstone)

Clastic sedimentary rock (primarily SiO2 with various oxides)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz with Iron Staining (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Crystalline Silicon Dioxide (SiO2)

Pink Garnet (likely Almandine or Rhodolite) (Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)) — mineral

Pink Garnet (likely Almandine or Rhodolite)

Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)

White Marble (Recrystallized Calcite (CaCO3)) — metamorphic

White Marble

Recrystallized Calcite (CaCO3)

River Quartz Cobble (Silicon Dioxide (SiO2)) — mineral

River Quartz Cobble

Silicon Dioxide (SiO2)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

Garnet Schist (Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)) — metamorphic

Garnet Schist

Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)

Vanadinite on Matrix (Vanadinite (Pb5(VO4)3Cl)) — mineral

Vanadinite on Matrix

Vanadinite (Pb5(VO4)3Cl)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Smurf Rock (Fictional Interpretation) (Cyanus Anthropomorphicus (Geologic Simulation)) — Artificial/Fantasy Object

Smurf Rock (Fictional Interpretation)

Cyanus Anthropomorphicus (Geologic Simulation)

Artificial/Fantasy Object

Quartzite (specifically a river-worn pebble) (Quartzite (primarily SiO2)) — metamorphic

Quartzite (specifically a river-worn pebble)

Quartzite (primarily SiO2)

Sandstone (Arenite (SiO2 principal composition)) — sedimentary

Sandstone

Arenite (SiO2 principal composition)

Yellow Quartz (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Planet Earth (Gaia (Silicate Terrestrial Planet)) — metamorphic

Planet Earth

Gaia (Silicate Terrestrial Planet)

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Garnet (Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3) — mineral

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3