Quartzite River Stone
Quartzite (primarily SiO2)
metamorphic
Category
Man Made Glass
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Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Sandstone (Ferruginous)
Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)
sedimentary
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite Cobble
Quartzite (predominantly SiO2)
metamorphic
Quartzite pebble
Quartzite (primarily SiO2)
metamorphic
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
mineral
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
sedimentary
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Sandstone
Arenite (Sedimentary Rock)
sedimentary
Quartzite Pebbles
Crystalline silica rock (SiO2)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sunstone (Heliolite)
Plagioclase Feldspar ((Ca,Na)(Al,Si)4O8)
mineral
Sandstone (Yellow/Tan)
Clastic sedimentary rock (primarily SiO2 with iron oxide staining)
sedimentary
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sand (Construction Grade)
Unconsolidated siliciclastic sediment (primarily SiO2)
sedimentary
Sandstone (Red)
Arenite (SiO2 with Fe2O3)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Arenite/Quartz Arenite
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)
sedimentary
Feldspar (Orthoclase/Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Silica (SiO2)
metamorphic
Quartzite Cobble
Quartzite (chemically SiO2)
metamorphic
Obsidian
Obsidian (Volcanic Glass, SiO2)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Green Fluorite
Calcium fluoride (CaF2)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral