Sandstone
Arenite (composed primarily of SiO2)
Category
Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.
Sandstone
Arenite (composed primarily of SiO2)
Obsidian
Obsidian (Amorphous volcanic glass)
Clear Quartz / Rock Crystal
Silicon Dioxide (SiO2)
Amazonite with Smoky Quartz and Feldspar
Microcline (KAlSi3O8) with Quartz (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Tektite (Indochinite)
Tektite (High-silica natural glass, primarily SiO2 with Al2O3)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Yellow/Citrine variety)
Crystalline Silicon Dioxide (SiO2)
Chert / Flint
Chert (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz in Host Rock
Silicon Dioxide (SiO2) in Rhyolite or Granite matrix
Potassium Feldspar and Quartz
KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)
Quartz (with inclusions / Sandstone fragment)
Silicon Dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
Red Sandstone
Arenite (Ferruginous Sandstone)
Milky Quartz
Silicon Dioxide (SiO2)
Iron-stained Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))
Sandstone or Limestone
Arenite or Calcareous Sedimentary Rock
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
White Quartz
Silicon Dioxide (SiO2)
Smoky Quartz with Calcite/Quartz Veining
Silicon Dioxide (SiO2)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Quartz Geode
Silicon dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
Quartz (Quarzite or Massive Quartz vein)
Silicon Dioxide (SiO2)
Green Aventurine (Propably a tumbled variety)
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Smoky/Grey Quartz Variant)
Silicon Dioxide (SiO2)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Obsidian (Gold Sheen)
Obsidian (SiO2 + impurities)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
Quartz (Tumbled/Polished Pebble)
Silicon Dioxide (SiO2)