Chert (Arrowhead or Flake)
Microcrystalline quartz (SiO2)
sedimentary
Category
Sedimentary (Anthropogenic)
Browse sedimentary (anthropogenic) specimens identified by the Rock Identifier community.
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Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Sedimentary
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
sedimentary
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Arrowhead)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Sea Glass
Man-made silicate glass
sedimentary
Chert (Arrowhead Fragment)
Silicon Dioxide (SiO2)
sedimentary
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Chert (Arrowhead/Tool variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead (Lithic Artifact)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Arrowhead/Projectile Point)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Iron Slag (Industrial Byproduct)
Anthropogenic pyrometallurgical residue
mineral
Iron Slag
Anthropogenic Ferro-silicate
mineral
Ferrocoke or Slag
Anthropogenic pyrometallurgical residue
igneous
Iron Slag
Anthropogenic Iron Silicate
industrial byproduct
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Chert (Arrowhead Debitage or Flake)
Microcrystalline silica (SiO2)
sedimentary
Smelter Slag
Anthropogenic Silicate Slag
igneous
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Slag (Industrial Glass/Byproduct)
Anthropogenic Vitreous Silicate
igneous (anthropogenic)
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Iron Slag
Anthropogenic pyrometallurgical byproduct
igneous
Iron Slag
Anthropogenic pyrometallurgical residue
industrial byproduct
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Slag (Industrial)
N/A (Anthropogenic Slag)
industrial by-product
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Conglomerate (Asphaltic/Anthropogenic)
Clastic sedimentary rock / Bituminous mixture
sedimentary
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (Chert or Flint)
sedimentary
Chert (Arrowhead/Projectile Point)
Cryptocrystalline Quartz (SiO2)
sedimentary
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite