Limestone
Calcium Carbonate (CaCO3)
sedimentary
Category
Antropogenic (Man Made Glass Byproduct)
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
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
Sandstone (likely Quartzose)
Arenite (SiO2 principal mineral)
sedimentary
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