Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
Category
Browse anthropogenic (human made) sedimentary like material specimens identified by the Rock Identifier community.
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Chert (Yellow/Tan variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Sandstone
Arenite (variable SiO2 composition)
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
Chert (Flint variety)
Chert (SiO2)
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
Conglomerate
Conglomerate (clastic sedimentary rock)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartzite Arrowhead (Archaeological Lithic)
Recrystallized Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Chert (Chert Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
Chert (Flint)
Microcrystalline Silica (SiO2)
Chert / Jasper
Silicon Dioxide (SiO₂)
Bauxite
Bauxite (Al(OH)3, AlO(OH))
Sandstone
Arenite (composed primarily of SiO2)
Chert (Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Chert (specifically Red Chert/Jasper)
Microcrystalline Quartz (SiO2)
Beads (likely glass or man-made material)
N/A (artificial material)
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
Chert (and Flint)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert (Flint variety)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite
Slag (Industrial Glassy Byproduct)
Anthropogenic silicate byproduct (Slag)
Chert (Yellow Jasper variant)
Silicon Dioxide (SiO2)
Chert
Chert (microcrystalline quartz)
Chert (and Chert Geode)
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Green Glass Cullet / Recycled Glass
Amorphous Silicon Dioxide (SiO2) with various metal oxides
Chert (Flint variety)
Microcrystalline Quartz (SiO2)
Chert (and Limestone)
Silicon Dioxide (SiO2)
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
Chert (Jasper/Flint variant)
Microcrystalline Quartz (SiO2)