Quartz with Pyrite inclusions
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
Category
Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.
Quartz with Pyrite inclusions
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
Sandstone (Weathered Pebble)
Sedimentary Rock (Quartz arenite)
Lepidolite
Lepidolite (K(Li,Al)3(Si,Al)4O10(F,OH)2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Quartz Druzy on Matrix (with Copper Mineralization)
Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
Quartz (specifically Clear Quartz with iron/hematite staining)
Silicon Dioxide (SiO2)
Clear Quartz Cluster
Silicon Dioxide (SiO2)
Quartz Vein in Siltstone
SiO2 (Quartz) on clastic sedimentary matrix
Vuggy Quartz on Matrix
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Obsidian
Volcanic Glass (predominantly SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Quartzite Pebble
Metamorphic Quartzite (SiO2)
Chert / Quartz Pebble
Silicon Dioxide (SiO2)
Jasper
Microcrystalline quartz (SiO2)
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Goethite/Limonite inclusions
Citrine (Heat-treated Amethyst)
Silicon Dioxide (SiO2) with iron impurities
Weathered quartz-rich stone, possibly chalcedony or calcite
Likely microcrystalline quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky variety with matrix)
Silicon Dioxide (SiO2)
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
Likely quartz fragment
Quartz (silicon dioxide, SiO₂), possibly milky quartz or quartz-rich rock
Green Aventurine
SiO2 (Quartz with Fuchsite inclusions)
Tumbled green aventurine (probable)
Quartz, SiO₂, with green fuchsite mica inclusions
Quartz pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz with Host Rock
Silicon Dioxide (SiO2)
Obsidian
Volcanic Glass (SiO2 + impurities)
Druzzy Quartz on Matrix
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon dioxide (SiO2)
Sandstone
Clastic Sedimentary Rock
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz, SiO2)
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)