Manufactured Glass (Simulant)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz with Mica inclusions

Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Red vesicular volcanic rock, likely scoria

Scoria (mafic volcanic rock; commonly basaltic, composed mainly of plagioclase, pyroxene, and iron-rich glass)

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

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 (Siltstone or Fine-grained)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Arenite

Sandstone (Quartzose)

Arenite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Quartzite

Metamorphosed Sandstone (primarily SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite pebble

Quartzite (SiO2 based)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Sandstone

Arenite (SiO2 based)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz Crystal

Silicon Dioxide (SiO2)

Sandstone

Clastic Sedimentary Rock

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartzite

Metamorphic Quartz (SiO2)

Sandstone

Sedimentary Rock (Quartz Sandstone)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)