Sandstone
Arenite (primarily SiO2)
sedimentary
Category
Sedimentary Rock Or Mineral (Depending On Origin And Purity)
Browse sedimentary rock or mineral (depending on origin and purity) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Arenite (with iron oxide cement)
sedimentary
Clear/White Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone (Quartzose Sandstone)
Arenite (SiO2 primarily)
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Pyrite on Quartz matrix
Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
River Rock (Basalt/Greywacke pebbles)
Fluvial gravel primarily composed of Mafic Volcanic Rock (Basalt) or Lithic Sandstone (Greywacke)
igneous and sedimentary
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)
sedimentary
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
sedimentary
Basalt Cobble
Aphanitic Mafic Igneous Rock (Basalt)
igneous
Granite Pegmatite with Tourmaline and Muscovite
Pegmatite (Feldspar: KAlSi3O8, Quartz: SiO2, Schorl: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH))
igneous
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Sedimentary Rock
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 principal)
sedimentary
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with Fe2O3)
sedimentary
Sandstone
Arenite (composed primarily of SiO2, or Silicon Dioxide)
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Diamond (in jewelry setting)
Diamond (Carbon, C)
mineral
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone (Fossiliferous)
Arenite / Clastic Sedimentary Rock
sedimentary
Diamond
Native Carbon (C)
mineral
Bauxite (Pisolitic Bauxite)
Bauxite (mixture of Hydrous Aluminum Oxides)
sedimentary
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Pumice
Pumicite (fine-grained pumice), Scoria (similar origin but denser and darker, usually basaltic)
Igneous
Sandstone
Arenite
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartzite (Yellow/Orange variety)
Quartzite (primarily SiO2)
metamorphic
Quartzite Pebbler
Quartzite (primarily SiO2)
metamorphic
Quartz Geode (Cracked)
Quartz (Silicon Dioxide, SiO2)
sedimentary
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Sandstone (with Feldspathic/Arkose qualities)
Arenite (primarily SiO2 with KAlSi3O8 components)
sedimentary
Quartz Vein in Host Rock (Likely Slate or Shale)
Hydrothermal Quartz (SiO2) in Pelitic host rock
metamorphic
Moldavite
Moldavite (Siliceous vitreous substance)
tektite (natural glass)
Conglomerate
Conglomerate
Sedimentary
Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Quartz (Common Quartz Pebble)
Silicon Dioxide (SiO2)
mineral