Manufactured Glass (Simulant)

Quartz

Silicon Dioxide (SiO2)

Quartz pebble

Silicon dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz in Epidote Host Rock

Crystalline Silicon Dioxide (SiO2) with Epidote Ca2(Al,Fe)3(SiO4)3(OH)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Crystal (Amethyst)

Silicon Dioxide (SiO2)

Quartzite river pebble

Quartzite (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Raw Crystal)

Silicon Dioxide (SiO2)

Lepidolite

K(Li,Al)3(Al,Si,3O10)(F,OH)2

Quartzite

Metamorphic Quartzite

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Sandstone

Clastic sedimentary rock (Quartz arenite or arkose)

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone

Clastic sedimentary rock (quartz arenite)

Sand

Siliciclastic sediment / Quartz sand (SiO2)

Sandstone

Sedimentary Rock (Quartz arenite/Arkosic sandstone)

Microcline Feldspar

KAlSi3O8

Sandstone

Sedimentary Rock (Quartz arenite)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone

Sandstone (SiO2 rich)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based)

Quartz on Matrix

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite

Metamorphic Quartz (SiO2)

Quartzite

Quartzite (mostly SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphosed Quartz-rich Sandstone (SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Limestone Pebble

Sedimentary Calcium Carbonate (CaCO3)

Sandstone

Arenite (SiO2 primarily)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Sandstone

Arenite (SiO2 primarily)