Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Category
Manufactured Glass
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Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (predominantly SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartzite (River Cobble)
Quartzite (SiO2 with iron oxide staining)
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (Silicon Dioxide with various mineral cements)
sedimentary
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Sandstone (likely Graywacke or Arkose)
Arenite
sedimentary
Sandstone
Arenite
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Calcite
Calcium Carbonate (CaCO3)
mineral
Orthoclase Feldspar
K(AlSi3O8)
mineral
Sandstone with Iron Staining
Arenite (SiO2 with Fe2O3)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Micaceous)
Clastic Sedimentary Rock - Micaceous Litharenite (SiO2 principal)
sedimentary
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Pink Feldspar
Orthoclase (KAlSi3O8)
igneous
Potassium Feldspar
K-Feldspar (Orthoclase/Microcline) KAlSi3O8
mineral
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral