Manufactured Glass (Simulant)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Ferruginous)

Arenite (with Goethite/Limonite cement)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Clear Quartz (Rock Crystal Fragments)

Silicon Dioxide (SiO2)

Pink Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Orthoclase Feldspar

Potassium Aluminum Silicate (KAlSi3O8)

River Quartzite (Water-worn Quartzite)

Quartzite (primarily SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Chert / Flint (with quartz or calcite inclusion)

Silicon dioxide (SiO2)

Quartz (Microcrystalline/Macro crystalline variety)

Silicon Dioxide (SiO2)

White Quartz Sphere

Silicon Dioxide (SiO2)

Quartzite River Pebble

Quartzite (primarily Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz (Crystal Cluster)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz pebble)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Water-Worn Pebble)

Quartz (Silicon Dioxide, SiO2)

Chert (containing Quartz)

Microcrystalline Silica (SiO2)

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Meta-quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Chert (Cherty Limestone / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartzite

Quartzite (SiO2)

Quartz (Milky or Cloudy variety)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO₂)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (specifically Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite

Quartzite (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Massive Quartz (Yellow/Citrine variety)

Silicon Dioxide (SiO2)

Quartz Vein in Sandstone

Sandstone with Hydrothermal Quartz (SiO2)