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

Coal (Combustible sedimentary rock) — sedimentary

Coal

Combustible sedimentary rock

Tektite (likely indochinite) (Natural silica-rich impact glass; predominantly amorphous SiO₂ with aluminum, iron, magnesium, calcium, and sodium) — mineral

Tektite (likely indochinite)

Natural silica-rich impact glass; predominantly amorphous SiO₂ with aluminum, iron, magnesium, calcium, and sodium

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)

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)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Silver (Morgan Dollar) (Native Silver (Ag) - 90% Silver, 10% Copper alloy) — mineral

Silver (Morgan Dollar)

Native Silver (Ag) - 90% Silver, 10% Copper alloy

Diamond (or Cubic Zirconia) (Carbon (C) or Zirconium Dioxide (ZrO2)) — gemstone

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Crushed Stone Ballast (Crushed Limestone or Granite Aggregate) — sedimentary

Crushed Stone Ballast

Crushed Limestone or Granite Aggregate

Sandstone (lithic/quartz variant) (Clastic sedimentary rock (SiO2 predominant)) — sedimentary

Sandstone (lithic/quartz variant)

Clastic sedimentary rock (SiO2 predominant)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Diamond (C) — gemstone

Diamond

C

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

Silver (Sterling Silver Jewelry)

Argentum (Ag) mixed with Copper (Cu)

Serpentine (Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)) — metamorphic

Serpentine

Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)

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

Rough Diamond

Diamond (Native Carbon, C)

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)

Quartz Sand Gravel (Silicon Dioxide (SiO2)) — sedimentary

Quartz Sand Gravel

Silicon Dioxide (SiO2)

Diamond (or Cubic Zirconia) (Cubic Carbon (C) or Zirconium Dioxide (ZrO2)) — gemstone

Diamond (or Cubic Zirconia)

Cubic Carbon (C) or Zirconium Dioxide (ZrO2)

Diamond (in a gold ring) (Diamond (pure carbon, C)) — mineral

Diamond (in a gold ring)

Diamond (pure carbon, C)

Quartzite (Quartzite (principally SiO2)) — metamorphic

Quartzite

Quartzite (principally SiO2)

Potassium-Rich Silicate Clay (inferred from biological context) (Phyllosilicate group (likely Illite or Smectite within surrounding soil substrate)) — mineral

Potassium-Rich Silicate Clay (inferred from biological context)

Phyllosilicate group (likely Illite or Smectite within surrounding soil substrate)

Pebble (Lithic fragment / Water-worn rock) — sedimentary

Pebble

Lithic fragment / Water-worn rock

Sandstone Pebble (Arenite (Siliclastic sedimentary rock)) — sedimentary

Sandstone Pebble

Arenite (Siliclastic sedimentary rock)

Sandstone (Ferruginous) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Red Sandstone (Ferruginous Sandstone (SiO2 dominated with Fe2O3)) — sedimentary

Red Sandstone

Ferruginous Sandstone (SiO2 dominated with Fe2O3)

Red Sandstone (Sandstone (lithic arenite or arkose with iron oxide)) — sedimentary

Red Sandstone

Sandstone (lithic arenite or arkose with iron oxide)

Sandstone (Arenite (SiO2 principal composition)) — sedimentary

Sandstone

Arenite (SiO2 principal composition)

Sandstone (Ferruginous) (Arenite with Iron Oxides) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxides

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)

Synthetic Sapphire and Ion-X Glass (Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass) — mineral

Synthetic Sapphire and Ion-X Glass

Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

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

Silver (Jewelry form)

Native Silver (Ag)

Clay Brick (Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)) — metamorphic (man-made/anthropogenic)

Clay Brick

Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)

metamorphic (man-made/anthropogenic)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)