Sandstone
Arenite (composed primarily of SiO2)
Category
Browse organic (if resin) or synthetic (if glass); simulating sedimentary or metamorphic (for natural stones) specimens identified by the Rock Identifier community.
Sandstone
Arenite (composed primarily of SiO2)
Chert (Yellow/Tan variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartzite
Quartzite (SiO2)
Chert (Flint/Jasper variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Chert (Flint variety)
Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (variable SiO2 composition)
Chert (White Chert or Flint)
Microcrystalline or cryptocrystalline quartz (SiO2)
Chert (Grey/Black variety)
Chert (Silicon Dioxide, SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (and Flint variant)
Chert (SiO2)
Chert (often called Flint in archaeological contexts)
Silicon Dioxide (SiO2)
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 principal component)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper variety)
Chert (Silicon Dioxide, SiO2)
Chert (and Flint variant)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Chert Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert Nodule (Fossiliferous Chert)
Microcrystalline Quartz (SiO2)
Ferruginous Chert
Microcrystalline Quartz (SiO2) with Iron Oxides
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Quartzite
Quartzite (primarily SiO2)
Chert (Gravel)
Microcrystalline Quartz (SiO2)
Chert (and/or Flint)
Microcrystalline Quartz (SiO2)
Chert (Nodular)
Microcrystalline Silica (SiO2)
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline silica (SiO2)
Chert (often called Flint or Jasper when red)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Chert / Flint
Microcrystalline or cryptocrystalline quartz (SiO2)
Chert (often found as Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Chert / Flint (with quartz or calcite inclusion)
Silicon dioxide (SiO2)
Chert (v. Flint)
Sedimentary Cryptocrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)