Sandstone
Arenite (SiO2 primarily)
sedimentary
Category
Man Made Glass
Browse man made glass specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily SiO2)
sedimentary
Milky Quartz with Chlorite/Mica inclusions
Silicon Dioxide (SiO2) with inclusions
mineral
Quartzite pebble
Quartzite (SiO2)
metamorphic
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Granite
Granitoid
igneous
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Olivine (in Peridotite/Dunite form)
Magnesium Iron Silicate (Mg,Fe)2SiO4
igneous
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone (likely with Quartz Veining)
Arenite (primarily SiO2)
sedimentary
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Quartzite
Quartzite (90%+ SiO2)
metamorphic
Sandstone (Quartzite-rich)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Lepidolite on Pegmatite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite
igneous
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Olivine (Peridot)
Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Rose Quartz
Silicon dioxide (SiO2)
mineral
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Amethyst
Quartz (Silicon Dioxide, SiO2) with iron impurities
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Olivine (Peridot when gem-quality)
Olivine Group (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
mineral
Peridot in Basalt
Olivine ((Mg, Fe)2SiO4) in Basalt
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Sandstone
Arenite (SiO2 principal)
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary