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

Native Copper in Matrix (Native Copper (Cu)) — mineral

Native Copper in Matrix

Native Copper (Cu)

Granite (Unakite / Feldspar-rich Granite) (Granite (composed of Potassium Feldspar, Quartz, and Biotite/Epidote)) — igneous

Granite (Unakite / Feldspar-rich Granite)

Granite (composed of Potassium Feldspar, Quartz, and Biotite/Epidote)

Blue calcite (Calcite (CaCO₃), likely blue variety) — mineral

Blue calcite

Calcite (CaCO₃), likely blue variety

Faceted Gemstone (Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass) — gemstone

Faceted Gemstone

Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass

Coal (most likely Bituminous or Anthracite) (Coal (organic sedimentary rock)) — Sedimentary

Coal (most likely Bituminous or Anthracite)

Coal (organic sedimentary rock)

Concretion (Sedimentary Concretion) — sedimentary

Concretion

Sedimentary Concretion

Banded Iron Formation (BIF) (Banded Iron Formation (predominantly Hematite and Chert)) — sedimentary

Banded Iron Formation (BIF)

Banded Iron Formation (predominantly Hematite and Chert)

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Green Agate (Silicon dioxide (SiO₂)) — mineral

Green Agate

Silicon dioxide (SiO₂)

Orange Calcite (likely polished specimen) (Calcite) — Mineral

Orange Calcite (likely polished specimen)

Calcite

Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate) (Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement) — Mineral

Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate)

Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement

Quartzite (Quartzite (SiO2-rich metamorphic rock)) — metamorphic

Quartzite

Quartzite (SiO2-rich metamorphic rock)

Sandstone (Arenite (primary component SiO2)) — sedimentary

Sandstone

Arenite (primary component SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Crushed Stone / Gravel (Aggregate (mixed lithology)) — sedimentary

Crushed Stone / Gravel

Aggregate (mixed lithology)

Diamond (Diamond (C)) — Mineral

Diamond

Diamond (C)

Tumbled sodalite with white calcite veining (Sodalite, Na8(Al6Si6O24)Cl2, commonly intergrown with calcite, CaCO3) — mineral

Tumbled sodalite with white calcite veining

Sodalite, Na8(Al6Si6O24)Cl2, commonly intergrown with calcite, CaCO3

Yellow calcite (tumbled honey or lemon calcite) (Calcite, calcium carbonate (CaCO₃), likely a yellow/orange calcite variety) — mineral

Yellow calcite (tumbled honey or lemon calcite)

Calcite, calcium carbonate (CaCO₃), likely a yellow/orange calcite variety

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Basalt (Basalt) — Igneous

Basalt

Basalt

Tektite (Indochinite) (Tektite (High-silica impact glass)) — igneous

Tektite (Indochinite)

Tektite (High-silica impact glass)

Chert Pebble (Microcrystalline silica (SiO2)) — sedimentary

Chert Pebble

Microcrystalline silica (SiO2)

Sandstone with Iron Concretion (Arenite with Limonite/Goethite Concretion) — sedimentary

Sandstone with Iron Concretion

Arenite with Limonite/Goethite Concretion

Limonite (Iron Ore) (Hydrated ferric oxide mixture (FeO(OH)·nH2O)) — sedimentary

Limonite (Iron Ore)

Hydrated ferric oxide mixture (FeO(OH)·nH2O)

Bismuth Crystal (Bismuth (Bi)) — mineral

Bismuth Crystal

Bismuth (Bi)

Synthetic Costume Glove (Paws) (Polyethylene terephthalate (Polyester) & Polyurethane blend) — Non-geological / Man-made textile

Synthetic Costume Glove (Paws)

Polyethylene terephthalate (Polyester) & Polyurethane blend

Non-geological / Man-made textile

Rose quartz cabochon (probable) (Quartz, silicon dioxide (SiO₂); pink color typically caused by trace elements and microscopic inclusions) — gemstone

Rose quartz cabochon (probable)

Quartz, silicon dioxide (SiO₂); pink color typically caused by trace elements and microscopic inclusions

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Orbicular Granite (specifically Mustard or Yellow Tonalite/Granodiorite) (Orbicular Quartz Diorite / Tonalite) — igneous

Orbicular Granite (specifically Mustard or Yellow Tonalite/Granodiorite)

Orbicular Quartz Diorite / Tonalite

Smoky quartz (likely) (Quartz, silicon dioxide (SiO₂)) — mineral

Smoky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Red Quartz (Druzy) (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Quartz (Druzy)

Silicon Dioxide (SiO2) with Hematite inclusions

Red jasper-like chalcedony pebble (Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper) — mineral

Red jasper-like chalcedony pebble

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

Yellow Sapphire (Corundum (Al2O3:Fe)) — gemstone

Yellow Sapphire

Corundum (Al2O3:Fe)

Asphalt Chunk (Asphalt concrete) — man-made composite

Asphalt Chunk

Asphalt concrete

man-made composite

Coal (Carbonaceous sedimentary rock / Lignite to Bituminous coal) — sedimentary

Coal

Carbonaceous sedimentary rock / Lignite to Bituminous coal

Coal (Biogenic sedimentary rock (Carbon)) — sedimentary

Coal

Biogenic sedimentary rock (Carbon)

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

Agate

Silicon Dioxide (Chalcedony), SiO2

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Silicon (Industrial Grade) (Elemental Silicon (Si)) — mineral

Silicon (Industrial Grade)

Elemental Silicon (Si)

Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Coquina or Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)