Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Category
Browse industrial byproduct (anthropogenic material) specimens identified by the Rock Identifier community.
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement)
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
Milky Quartz
Silicon Dioxide (SiO2)
Ocean Jasper
Orbicular Jasper, Chalcedony (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Flint / Chert
Microcrystalline Quartz (SiO2)
Flint
Microcrystalline quartz (SiO2)
Milky Quartz (with potential inclusion)
Silicon Dioxide (SiO2)
Petrified Wood
Silicified wood (primarily SiO2)
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Raw Quartz
Silicon Dioxide (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Sandstone
Sandstone (Siliciclastic Sedimentary Rock)
Red Sandstone
Sandstone (Quartz Arenite / Arkose with Hematite cement)
Jasper
Jasper (Silicon Dioxide, SiO2)
Amethyst crystal cluster
Amethyst, purple quartz (SiO₂) colored mainly by iron impurities and irradiation
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
Chert (White Chert/Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Scoria
Vesicular Basaltic Glass
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
Chert (variations include Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (or Flint)
Chert (SiO2)
Travertine (Calcareous Tufa)
Calcium Carbonate (CaCO3)
Chert (Jasper)
Microcrystalline quartz (SiO2)
Diamond
Carbon (C)
Rough Diamond
Diamond (pure Carbon, C)
Quartz
Silicon Dioxide (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Black Sapphire
Corundum (Al2O3 with iron and titanium impurities)
Sandstone (with Moss)
Quartz Arenite / Sandstone
Pyrite
Iron Sulfide (FeS2)