Rock Identifier

Category

Industrial Byproduct (Anthropogenic Material)

Browse industrial byproduct (anthropogenic material) specimens identified by the Rock Identifier community.

Arsenopyrite in Quartz/Host Rock (Arsenopyrite (FeAsS)) — mineral

Arsenopyrite in Quartz/Host Rock

Arsenopyrite (FeAsS)

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

Quartz (River Pebble)

Silicon Dioxide (SiO2)

mineral
White Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Gold-bearing Quartz (Lode Gold in Silicon Dioxide (SiO2)) — mineral

Gold-bearing Quartz

Lode Gold in Silicon Dioxide (SiO2)

mineral
Tiger's Eye (variations include Blue or Hawk's Eye) (Silicon Dioxide with Crocidolite inclusions (SiO2)) — Metamorphic mineral

Tiger's Eye (variations include Blue or Hawk's Eye)

Silicon Dioxide with Crocidolite inclusions (SiO2)

Metamorphic mineral
Rough Corundum (Sapphire/Ruby mixture) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Rough Corundum (Sapphire/Ruby mixture)

Corundum (Aluminum Oxide, Al2O3)

mineral
Cubic Zirconia (as used in jewelry setting) (Zirconium dioxide (ZrO2)) — mineral

Cubic Zirconia (as used in jewelry setting)

Zirconium dioxide (ZrO2)

mineral
Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

mineral
Coal (specifically Bituminous or Anthracite) (Organic sedimentary rock; primarily Carbon (C) with varying H, S, O, N) — sedimentary

Coal (specifically Bituminous or Anthracite)

Organic sedimentary rock; primarily Carbon (C) with varying H, S, O, N

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

Black Tourmaline

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

mineral
Aqua Aura Quartz (Titanium/Gold-coated Silicon Dioxide (SiO2)) — mineral

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

mineral
Diamond (appearing in jewelry) (Diamond (pure Carbon, C)) — mineral

Diamond (appearing in jewelry)

Diamond (pure Carbon, C)

mineral
Pegmatite (with smoky quartz and tourmaline/biotite) (Pegmatitic Granite) — igneous

Pegmatite (with smoky quartz and tourmaline/biotite)

Pegmatitic Granite

igneous
Sandstone (Ferruginous) (Arenite (SiO2 with Fe2O3 inclusions)) — sedimentary

Sandstone (Ferruginous)

Arenite (SiO2 with Fe2O3 inclusions)

sedimentary
Quartz Druze on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

mineral
Yellow Calcite (Banded Calcite) (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite (Banded Calcite)

Calcium Carbonate (CaCO3)

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

Yellow Quartz Pebble

SiO2 (Silicon Dioxide)

mineral
Chert (Jasper/Quartzite) (Microcrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Quartzite)

Microcrystalline Silicon Dioxide (SiO2)

sedimentary
Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

metamorphic
Mica Schist (with Muscovite) (Muscovite/Quartz Schist (KAl2(AlSi3O10)(OH)2)) — metamorphic

Mica Schist (with Muscovite)

Muscovite/Quartz Schist (KAl2(AlSi3O10)(OH)2)

metamorphic
Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

mineral
Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

sedimentary
Quartz (Milky/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Chalcedony variety)

Silicon Dioxide (SiO2)

mineral
Cubic Zirconia (CZ) in Gold-Plated Setting (Cubic Zirconium Dioxide (ZrO2)) — mineral

Cubic Zirconia (CZ) in Gold-Plated Setting

Cubic Zirconium Dioxide (ZrO2)

mineral
Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

mineral
Orange Calcite with Siderite/Iron Oxide Coating (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite with Siderite/Iron Oxide Coating

Calcium Carbonate (CaCO3)

mineral
Banded Sandstone (Differential Weathering) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Banded Sandstone (Differential Weathering)

Clastic Sedimentary Rock (primarily SiO2)

sedimentary
Rough Diamond (Diamond (Native Element Carbon, C)) — mineral

Rough Diamond

Diamond (Native Element Carbon, C)

mineral
Bauxite (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, AlO(OH))

sedimentary
Chert / Flint (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary
White Marble (Industrial/Architectural) (Recrystallized Calcite (CaCO3)) — metamorphic

White Marble (Industrial/Architectural)

Recrystallized Calcite (CaCO3)

metamorphic
Quartzite River Pebble (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite River Pebble

Metamorphosed Quartz Sandstone (SiO2)

metamorphic
Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

sedimentary
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

sedimentary
Sandstone (likely Quartzose) (Sandstone (Principally SiO2)) — sedimentary

Sandstone (likely Quartzose)

Sandstone (Principally SiO2)

sedimentary
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily Quartz, SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

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

Quartz (Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

mineral
Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

sedimentary
Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

sedimentary
Quartzite Pebble (Metamorphic Quartz (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartz (SiO2)

metamorphic