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

Chert (Arrowhead variety) (Chert (SiO2)) — sedimentary

Chert (Arrowhead variety)

Chert (SiO2)

Arsenopyrite with Schist Matrix (Arsenopyrite (FeAsS)) — mineral

Arsenopyrite with Schist Matrix

Arsenopyrite (FeAsS)

Tiffany Stone (Fluoritized Opal Beryllium Tuff (composed of Fluorite; CaF2, Opalized SiO2, Bertrandite, Chalcedony, and Quartz)) — metamorphic

Tiffany Stone

Fluoritized Opal Beryllium Tuff (composed of Fluorite; CaF2, Opalized SiO2, Bertrandite, Chalcedony, and Quartz)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Greenstone Celt (Polished Stone Axe) (Metamorphosed mafic rock (often Basalt or Diabase)) — metamorphic

Greenstone Celt (Polished Stone Axe)

Metamorphosed mafic rock (often Basalt or Diabase)

Possible basaltic volcanic rock or iron-rich meteorite (Likely basalt (plagioclase–pyroxene rock); meteorite status cannot be confirmed visually) — igneous

Possible basaltic volcanic rock or iron-rich meteorite

Likely basalt (plagioclase–pyroxene rock); meteorite status cannot be confirmed visually

Fluorite (Fluor-spar) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Fluor-spar)

Calcium Fluoride (CaF2)

Fluorite (Purple/Blue variety) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Purple/Blue variety)

Calcium Fluoride (CaF2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Cullet Glass (Industrial Slag Glass) (Amorphous Silica (SiO2) with metallic oxide impurities) — Man-made byproduct (often mistaken for Obsidian or Emerald)

Cullet Glass (Industrial Slag Glass)

Amorphous Silica (SiO2) with metallic oxide impurities

Man-made byproduct (often mistaken for Obsidian or Emerald)

Silver (Sterling Silver Jewelry) (Argentum (Ag) mixed with Copper (Cu)) — mineral

Silver (Sterling Silver Jewelry)

Argentum (Ag) mixed with Copper (Cu)

Diamond (or Diamond Simulant) (C (Carbon) or synthetic equivalent) — gemstone

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Granite Pebble (Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)) — igneous

Granite Pebble

Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)

Silver (Jewelry form) (Native Silver (Ag)) — mineral

Silver (Jewelry form)

Native Silver (Ag)

Chert Arrowhead (Cryptocrystalline microcrystalline Quartz (SiO2)) — sedimentary

Chert Arrowhead

Cryptocrystalline microcrystalline Quartz (SiO2)

Concrete Rubble with Aggregate (Hardened Portland Cement Paste with Coarse Aggregate) — Anthropogenic (Man-made)

Concrete Rubble with Aggregate

Hardened Portland Cement Paste with Coarse Aggregate

Anthropogenic (Man-made)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Pyrite (on Quartz matrix) (Iron Disulfide (FeS2)) — mineral

Pyrite (on Quartz matrix)

Iron Disulfide (FeS2)

Diamond (or Simulant) (Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)) — gemstone

Diamond (or Simulant)

Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)

Diamond (or diamond simulant) (C) — gemstone

Diamond (or diamond simulant)

C

Tumbled dark stone, likely basalt or gabbro (Basalt (fine-grained mafic rock), possibly gabbro; mainly plagioclase and pyroxene) — igneous

Tumbled dark stone, likely basalt or gabbro

Basalt (fine-grained mafic rock), possibly gabbro; mainly plagioclase and pyroxene

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

Diamond (or Diamond Simulant)

Carbon (C)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Queen Conch Shell (Biogenic Calcium Carbonate) (Aliger gigas (synonym Strombus gigas); Composition: Aragonite (CaCO3)) — mineral

Queen Conch Shell (Biogenic Calcium Carbonate)

Aliger gigas (synonym Strombus gigas); Composition: Aragonite (CaCO3)

South Korean 100 Won Coin (Cupronickel) (Cupronickel Alloy (75% Cu, 25% Ni)) — mineral-based alloy (anthropogenic)

South Korean 100 Won Coin (Cupronickel)

Cupronickel Alloy (75% Cu, 25% Ni)

mineral-based alloy (anthropogenic)

Asphalt (Road Aggregate) (Asphalt concrete / Bituminous mixture) — anthropogenic sedimentary (technolith)

Asphalt (Road Aggregate)

Asphalt concrete / Bituminous mixture

anthropogenic sedimentary (technolith)

Possible meteorite fragment (Undetermined; likely an iron-rich meteorite or meteorite-like slag fragment) — meteorite

Possible meteorite fragment

Undetermined; likely an iron-rich meteorite or meteorite-like slag fragment

Obsidian Arrowhead (Volcanic Glass (Primary composition: SiO2)) — igneous

Obsidian Arrowhead

Volcanic Glass (Primary composition: SiO2)

Diamond (or Diamond Simulant) (Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia ZrO2)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia ZrO2)

Diamond (C (Native Carbon)) — mineral

Diamond

C (Native Carbon)

Prasiolite (Green Quartz) / Sea Glass Amalgam (SiO2 (Silicon Dioxide)) — mineral

Prasiolite (Green Quartz) / Sea Glass Amalgam

SiO2 (Silicon Dioxide)

Epidote-rich rock (likely epidotite or altered basalt) (Epidote, Ca₂(Al,Fe³⁺)₃(SiO₄)₃(OH); possibly epidote-bearing mafic rock) — metamorphic

Epidote-rich rock (likely epidotite or altered basalt)

Epidote, Ca₂(Al,Fe³⁺)₃(SiO₄)₃(OH); possibly epidote-bearing mafic rock

Garnet Schist (Garnetiferous Mica Schist) — metamorphic

Garnet Schist

Garnetiferous Mica Schist

Jasper / Chert (Red) (Cryptocrystalline quartz (SiO2)) — Sedimentary / Mineral

Jasper / Chert (Red)

Cryptocrystalline quartz (SiO2)

Sedimentary / Mineral

Goldfish Cracker (Culinary Mimic) (Cibus aurum (Commonly composed of Enriched Wheat Flour and Cheddar Cheese)) — Anthropogenic Sedimentary-style Organic Solid

Goldfish Cracker (Culinary Mimic)

Cibus aurum (Commonly composed of Enriched Wheat Flour and Cheddar Cheese)

Anthropogenic Sedimentary-style Organic Solid

Limestone (Weathered) (Sedimentary Carbonate Rock (CaCO3)) — sedimentary

Limestone (Weathered)

Sedimentary Carbonate Rock (CaCO3)

Tiger’s-eye bead bracelet (Chatoyant quartz, principally quartz (SiO₂) with pseudomorphic fibrous crocidolite/goethite inclusions) — gemstone

Tiger’s-eye bead bracelet

Chatoyant quartz, principally quartz (SiO₂) with pseudomorphic fibrous crocidolite/goethite inclusions

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Green Glass Cullet / Recycled Glass (Amorphous Silicon Dioxide (SiO2) with various metal oxides) — Man-made Glass (Not a natural rock or mineral)

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Man-made Glass (Not a natural rock or mineral)

Polished Bumblebee jasper (Bumblebee jasper (calcite–orpiment/realgar-rich volcanic material; composition varies)) — mineral

Polished Bumblebee jasper

Bumblebee jasper (calcite–orpiment/realgar-rich volcanic material; composition varies)