Rock Identifier

Category

Industrial Byproduct (Anthropogenic Material)

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

Learn about Industrial Byproduct (Anthropogenic Material) in the encyclopedia

Adirondack Garnet

Adirondack Garnet

Peat

Almandine Garnet

Almandine Garnet

Dunite

Limonite

Shell Opal

Madagascar Opal

Lavender Obsidian

Electric Blue Obsidian

Orange Obsidian

Diamond

Metarhyolite

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Clay (as a rock-forming material) (Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)) — Mineral

Clay (as a rock-forming material)

Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)

Chert (specifically a nodule with Chalcendony/Agate banding) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically a nodule with Chalcendony/Agate banding)

Microcrystalline Quartz (SiO2)

Yellow Chert (Chert/Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Chert (Chert/Jasper)

Silicon Dioxide (SiO2)

Likely iron-rich rock or metallic mineral fragment (Uncertain; possibly limonite/goethite-rich material or weathered iron meteorite fragment) — mineral

Likely iron-rich rock or metallic mineral fragment

Uncertain; possibly limonite/goethite-rich material or weathered iron meteorite fragment

Diamond (Diamond (Pure Carbon, C)) — Mineral

Diamond

Diamond (Pure Carbon, C)

Blue calcite (probable) (Calcite, calcium carbonate (CaCO₃)) — mineral

Blue calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Mica Schist (Mica Schist (primarily Muscovite and Biotite composition)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Biotite composition)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Limonite (Iron Ore) (Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)

Chert (and Jasper/Chalcedony variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (and Jasper/Chalcedony variety)

Microcrystalline Quartz (SiO2)

Chert (specifically Gray/Banded Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Gray/Banded Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (specifically Flint) (Silicon dioxide (SiO2)) — sedimentary

Chert (specifically Flint)

Silicon dioxide (SiO2)

Synthetic Resin / Plastic Figurine (Synthetic Polymer (Copolymer of Polyethylene or Resin)) — Mineraloid-like Synthetic Material

Synthetic Resin / Plastic Figurine

Synthetic Polymer (Copolymer of Polyethylene or Resin)

Mineraloid-like Synthetic Material

Diamond (Princess Cut) (Carbon (C)) — mineral

Diamond (Princess Cut)

Carbon (C)

Coal (most likely Bituminous or Anthracite) (Coal (primarily composed of carbon with varying amounts of other elements)) — Sedimentary rock

Coal (most likely Bituminous or Anthracite)

Coal (primarily composed of carbon with varying amounts of other elements)

Sedimentary rock

Jasper and Quartz River Pebble (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper and Quartz River Pebble

Silicon Dioxide (SiO2) with impurities

Yellow calcite crystal cluster with calcite fragment (Calcite, calcium carbonate (CaCO₃)) — mineral

Yellow calcite crystal cluster with calcite fragment

Calcite, calcium carbonate (CaCO₃)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Unidentifiable Rock Fragment — Uncertain

Unidentifiable Rock Fragment

Tumbled blue-gray chalcedony (likely blue agate) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Tumbled blue-gray chalcedony (likely blue agate)

Chalcedony, microcrystalline quartz (SiO₂)

Chert (Nodule) (Chert (Silica, SiO2)) — sedimentary

Chert (Nodule)

Chert (Silica, SiO2)

Rough Emerald (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Aragonite Star Cluster (Aragonite (Calcium Carbonate - CaCO3)) — mineral

Aragonite Star Cluster

Aragonite (Calcium Carbonate - CaCO3)

Raw honey calcite (probable) (Calcite, calcium carbonate (CaCO₃)) — mineral

Raw honey calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Red Jasper (Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)) — mineral

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

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

Chert (varietal Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Rough Diamond (Diamond (Pure Carbon: C)) — mineral

Rough Diamond

Diamond (Pure Carbon: C)

Galena (likely) (Galena, lead sulfide (PbS)) — mineral

Galena (likely)

Galena, lead sulfide (PbS)

Slate (Slate (Metamorphic Rock)) — metamorphic

Slate

Slate (Metamorphic Rock)

Peridot gemstone pendant (Olivine, gem-quality forsteritic olivine (approximately (Mg,Fe)₂SiO₄)) — gemstone

Peridot gemstone pendant

Olivine, gem-quality forsteritic olivine (approximately (Mg,Fe)₂SiO₄)

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

Quartzite Pebble

Metamorphic Quartzite (primarily SiO2)

Chert (specifically Flint or Dark Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Dark Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Amethyst cluster (Quartz, SiO₂; purple coloration is caused mainly by iron-related defects and natural irradiation) — mineral

Amethyst cluster

Quartz, SiO₂; purple coloration is caused mainly by iron-related defects and natural irradiation

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

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

Chert (specifically Flint or Gray Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Gray Chalcedony)

Microcrystalline Quartz (SiO2)

Blue calcite (probable) (Calcite — CaCO₃) — mineral

Blue calcite (probable)

Calcite — CaCO₃