Sandstone
Arenite (SiO2 principal component)
sedimentary
Category
Sedimentary (Man Made)
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Coal
Bituminous or Anthracite coal (carbon-rich sedimentary rock)
sedimentary
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Iron Oxide cement)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Chert (variations include Flint)
Chert (SiO2)
sedimentary
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
sedimentary
Sandstone
Arenite
sedimentary
Chert (or possibly Flint)
SiO2 (Silicon Dioxide)
Sedimentary Rock
Granite
Course-grained intrusive igneous rock
igneous
Granite River Rock
Phaneritic Felsic Igneous Rock (Granite)
igneous
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz with Fe2O3 staining)
sedimentary
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
mineral
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Silty Shale
Silty Shale (Fissile Sedimentary Rock)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Kyanite
Kyanite (Al2SiO5)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Shale (sub-type: Carbonaceous Shale)
Lutaceous Sedimentary Rock
sedimentary
Granite
Granitoid
igneous
Chalcedony (Botryoidal Agate)
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
sedimentary
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Sandstone (with biological crust)
Arenite (SiO2 based)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Sedimentary / Mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary