Rock Identifier

Category

Industrial Byproduct (Anthropogenic Material)

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

Gold Ore in Quartz (Auriferous Quartz (SiO2 with Au inclusions)) — mineral

Gold Ore in Quartz

Auriferous Quartz (SiO2 with Au inclusions)

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

Gold Nugget

Native Gold (Au)

mineral
Quartzite (Metamorphosed Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Sandstone (SiO2)

metamorphic
Basalt (Basalt) — igneous

Basalt

Basalt

igneous
Milky Quartz in Matrix (Silicon Dioxide (SiO2)) — mineral

Milky Quartz in Matrix

Silicon Dioxide (SiO2)

mineral
Beryl (Emerald Variety) (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2Si6O18)

mineral
Aragonite / Calcite Geode (Calcium Carbonate (CaCO3)) — mineral

Aragonite / Calcite Geode

Calcium Carbonate (CaCO3)

mineral
Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

mineral
Peridotite (with Olivine) (Peridotite (rich in Olivine, (Mg,Fe)2SiO4)) — igneous

Peridotite (with Olivine)

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

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

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Blue Sapphire (Corundum (Al2O3 - Aluminum Oxide)) — mineral

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide)

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

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

mineral
White Agate (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

White Agate (Chalcedony)

Silicon Dioxide (SiO2)

mineral
Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

metamorphic
Serpentinite (Serpentinite (containing minerals of the Serpentine subgroup: Antigorite, Lizardite, and Chrysotile; formula (Mg,Fe)3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (containing minerals of the Serpentine subgroup: Antigorite, Lizardite, and Chrysotile; formula (Mg,Fe)3Si2O5(OH)4)

metamorphic
Yooperlite (Fluorescent Sodalite-bearing Syenite) — igneous

Yooperlite

Fluorescent Sodalite-bearing Syenite

igneous
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Peridot (Gem-quality Olivine) (Magnesium Iron Silicate ((Mg, Fe)2SiO4)) — mineral

Peridot (Gem-quality Olivine)

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

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

Green Calcite

Calcium Carbonate (CaCO3)

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

Calcite Geode

Calcium Carbonate (CaCO3)

mineral
Quartzite and Chert (Silicon Dioxide (SiO2)) — metamorphic and sedimentary

Quartzite and Chert

Silicon Dioxide (SiO2)

metamorphic and sedimentary
River Pebble (Quartz/Jasper) (Silicon Dioxide (SiO2)) — sedimentary

River Pebble (Quartz/Jasper)

Silicon Dioxide (SiO2)

sedimentary
Siltstone with Quartz Vein (Siltstone (primarily SiO2, Al2O3, Fe2O3)) — sedimentary

Siltstone with Quartz Vein

Siltstone (primarily SiO2, Al2O3, Fe2O3)

sedimentary
Polygenetic Breccia (Clastic Breccia (containing lithic fragments in a fine-grained matrix)) — sedimentary

Polygenetic Breccia

Clastic Breccia (containing lithic fragments in a fine-grained matrix)

sedimentary
Petrified Wood (Silicified Wood (SiO2 - Silicon Dioxide)) — mineral

Petrified Wood

Silicified Wood (SiO2 - Silicon Dioxide)

mineral
Petrified Wood (Silicified wood (Quartz, SiO2)) — metamorphic

Petrified Wood

Silicified wood (Quartz, SiO2)

metamorphic
Biotite (Mica) (Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2) — mineral

Biotite (Mica)

Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2

mineral
Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

mineral
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Chert (Iron-stained) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Iron-stained)

Silicon Dioxide (SiO2)

sedimentary
Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Iron Meteorite (likely an Individual specimen) (Iron Meteorite (Group IAB, IIAB, IIIAB, etc., Fe-Ni alloy)) — igneous

Iron Meteorite (likely an Individual specimen)

Iron Meteorite (Group IAB, IIAB, IIIAB, etc., Fe-Ni alloy)

igneous
Chalcedony on Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony on Matrix

Silicon Dioxide (SiO2)

mineral
Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

mineral
Chert (Flint) (Microcrystalline silica (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline silica (SiO2)

sedimentary
Chert (River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

sedimentary
Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

igneous
Chert (Brown Variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Brown Variety)

Microcrystalline quartz (SiO2)

sedimentary
Ironstone Concretion (Limonite/Hematite Nodules) (Ironstone (principally Limonite FeO(OH)·nH2O or Hematite Fe2O3 mixed with silica/clay)) — sedimentary

Ironstone Concretion (Limonite/Hematite Nodules)

Ironstone (principally Limonite FeO(OH)·nH2O or Hematite Fe2O3 mixed with silica/clay)

sedimentary
Chert (Flint variety) (Chert (SiO2)) — sedimentary

Chert (Flint variety)

Chert (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Yellow Calcite

Calcium Carbonate (CaCO3)

mineral