Sandstone
Arenite (SiO2 based)
Category
Browse manufactured stone specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 based)
Quartzite Cobble
Quartzite (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Siltstone
Siltstone (composed of clastic quartz and feldspar grains)
Quartzite
Quartzite (SiO2)
Sandstone
Arenite (SiO2 based clastic rock)
Quartz / Rose Quartz
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Quartzite River Pebble
Quartzite (comp: SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
River Sandstone (Lithic Arenite)
Lithic Sandstone (SiO2 dominated with lithic fragments)
Quartzite (Gold-Yellow variety)
Quartzite (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Sandstone (likely Quartzose Sandstone pebble)
Arenite (primarily SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 principal component)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Fe2O3 cement)
Sandstone (Quartz-rich)
Arenite (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
Green Calcite
Calcium Carbonate (CaCO3)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (composed primarily of Silica, SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz (Common Milky Quartz Pebble)
Silicon Dioxide (SiO2)
Quartz (Milky/Opaque variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with Fe2O3)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Chert (specifically Flint or Gray Chert)
Silicon Dioxide (SiO2)
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
Quartzite
Quartzite (SiO2)
Gray Quartz (Tumbled)
Silicon Dioxide (SiO2)
Quartzite River Pebbles
Quartzite (primarily SiO2)
Sandstone
Arenite
Biotite Schist
Biotite Mica Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)