Manufactured Glass (Simulant)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Red Sandstone

Arenite (primarily SiO2 with Fe2O3)

White Quartz Pebble

Silicon Dioxide (SiO2)

Feldspar (specifically Orthoclase or Plagioclase)

Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (90%+ SiO2)

Sandstone (Red/Brown)

Arenite (composed primarily of SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartzite Pebble

Quartzite (mostly SiO2)

Sandstone (likely Quartzose)

Sandstone (Principally SiO2)

Quartzite Pebble

Quartzite (mostly SiO2)

Sandstone (Ferruginous)

Arenite (Fe-rich)

Quartz / Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (Fe2O3 stained)

Quartzite Pebble

Metamorphic Quartz (SiO2)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Quartzite

Quartzite (SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Red Sandstone / River Stone)

Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)

Sandstone (Graywacke)

Arenite / Graywacke (SiO2 with lithic fragments)

Quartz (specifically Clear Quartz or Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz with Fe2O3 staining)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (principally SiO2)

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartzite (River Pebble)

Metamorphosed Quartz Sandstone (primarily SiO2)

Quartz (specifically Milky/Yellow Quartz)

Silicon Dioxide (SiO2)

Potassium Feldspar

K-Feldspar (KAlSi3O8)

Quartz (Citrine or Iron-stained variety)

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (likely Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)