Chert (Flint)
Microcrystalline Quartz (SiO2)
Category
Browse anthropogenic (human made) sedimentary like material specimens identified by the Rock Identifier community.
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Chert (Jasper/Flint variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartz (Pebble)
Quartz (SiO₂)
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
Chert (varieties: Flint or Chalcedony)
Microcrystalline silica (SiO2)
Chert (Flint)
Chert (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Polished black stone egg, probably black obsidian
Obsidian, a natural volcanic glass; composition primarily silica-rich glass (approximately SiO₂), with variable iron and other trace elements
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Yellow Ocher (Iron-rich Silt/Clay)
Goethite-rich Limonite (FeO(OH)qnH2O)
Chalcedony (Chert/Flint)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variant)
Microcrystalline quartz (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Silicon Dioxide (SiO2)
Banded Chert
Cryptocrystalline Quartz (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Flint variety)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (Green variety)
Silicon Dioxide (SiO2)
Chert (Arrowhead/Projectile Point)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Blue Apatite
Calcium phosphate mineral, Ca5(PO4)3(F,Cl,OH)
Chert (Flint)
Microcrystalline silica (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Tumbled yellow jasper
Jasper, microcrystalline quartz (SiO₂) colored by iron oxides
Flint (Chert)
Cryptocrystalline Silica (SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
Tumbled Flint / Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert / Chalcedony
Microcrystalline Quartz (SiO2)
Gypsum Wallboard (Drywall)
Hydrous calcium sulfate (CaSO4·2H2O)
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
Jasper
Microcrystalline Quartz (SiO2)