Sandstone (likely Quartzose)
Arenite (SiO2 principal mineral)
sedimentary
Category
Man Made Glass
Browse man made glass specimens identified by the Rock Identifier community.
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
sedimentary
Sandstone
Arenite
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Sandstone (Quartzite Pebble)
Arenite (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (with biological crust)
Arenite (SiO2 based)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Chert (variations include Flint)
Chert (SiO2)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone or Limestone
Arenite or Calcareous Sedimentary Rock
Sedimentary
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Quartzite (with Metamorphic Foliation)
Quartzite (Recrystallized SiO2)
metamorphic
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Sandstone
Arenite
sedimentary
Quartz (with iron oxide staining)
Silicon Dioxide (SiO2)
mineral
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
mineral
Sand Grain (Silica/Quartz Grain)
Silicon Dioxide (SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (SiO2 primarily)
sedimentary
River Cobble (likely Quartzite)
Metamorphosed Sandstone (SiO2)
metamorphic
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
River Quartz Cobble
Silicon Dioxide (SiO2)
mineral
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Agate (Crazy Lace or Eye Agate)
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Plutonic Felsic Rock (SiO2 > 69%)
igneous
Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
sedimentary
Limestone (Grey and White specimens)
Calcium Carbonate (CaCO3)
sedimentary
Rose Quartz
Silicon dioxide (SiO2)
mineral
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Sedimentary / Mineral