Asphalt Chunk (Bituminous Concrete)
Aggregated Bitumen / Artificial Breccia
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Asphalt Chunk (Bituminous Concrete)
Aggregated Bitumen / Artificial Breccia
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
Opalite
Man-made opalized glass
Goldstone
Aventurine Glass (Man-made)
Sea Glass
Man-made silicate glass
Slag Glass
Amorphous Silicate (Man-made)
Ring with an Orange Inlay
N/A (Man-made object)
Sea Glass
Man-made vitreous material
Red Sandstone or Brick Fragment
Arenite (if sandstone)
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
Asphalt Concrete (Bituminous Concrete)
Bituminous aggregate
Diamond (or Simulant)
Carbon (C)
Sandstone Concretion
Clastic Sedimentary Concretion (SiO2 with Iron Oxide)
Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
Weathered iron-rich concretion or ironstone nodule
Goethite–hematite limonite concretion (FeO(OH), Fe₂O₃, and hydrated iron oxides)
Crackle Agate / Dyed Quartz
SiO2 (Silicon Dioxide)
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Sandstone Concretion
Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)
Sea Glass
Silicon dioxide (mostly)
Concretion
Sedimentary Concretion (Ironstone / Calcite Concretion)
Opalite
Man-made Glass (Synthetic Opalized Glass)
Dyed Agate
Chalcedony (SiO2)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
Sandstone (with Liesegang rings or joints)
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)
Chakra Stone (Composite / Man-made Bonded Gemstones)
Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Unidentified translucent crystal/mineral fragment
Likely quartz (SiO₂), but visual identification is uncertain
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
Asphalt concrete
Anthropogenic conglomerate
Slag
Anthropogenic Vitrification Product / Silicate Slag
Magnetic Hematite (Man-made)
Iron Oxide (Fe2O3) with Barium-Strontium Ferrite
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
Brick fragment (Man-made material)
N/A (Fired clay)
Sandstone Anvil / Nutting Stone
Quartzose Sandstone (Sedimentary Rock)
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye