Manufactured Glass (Simulant)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone

Arenite

Sandstone (Siltstone or Fine-grained)

Clastic sedimentary rock (primarily SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Quartzite

Metamorphosed Sandstone (primarily SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite Pebbles

Quartzite (SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (SiO2 based)

Sandstone

Arenite

Quartz (Druzy)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide - SiO2)

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Stream Pebble)

Arenite (primarily SiO2)

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Pebble)

Arenite (composed primarily of SiO2)

Sandstone

Sandstone (Sedimentary rock composed of silicate grains)

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Potassium Feldspar and Quartz

KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)