Quartzite Pebble
Quartzite (SiO2)
Category
Browse industrial byproduct (anthropogenic rock like material) specimens identified by the Rock Identifier community.
Quartzite Pebble
Quartzite (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Granitic Pegmatite
Pegmatite
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
Sandstone (Pebble)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Sandstone
Arenite
Schist
Mica Schist
Quartz Geode
Silicon Dioxide (SiO2)
Garnet
Almandine (Fe3Al2(SiO4)3)
River Cobble (Basaltic/Andesitic)
Mafic Igneous Porphyritic Rock
Pumice
Pumice (volcanic glass formed of highly vesicular rough textured rock)
Asphalt (Bituminous pavement fragment)
Artificial conglomerate / Bitumen-Aggregate mixture
Quartz in Matrix (possibly Basalt or Siltstone host)
Silicon Dioxide (SiO2) in Host Rock
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
Chert
Chert (Microcrystalline Quartz, SiO2)
Sandstone
Arenite (primarily SiO2)
Coquina / Shelly Limestone
Bioclastic Limestone (composed of CaCO3)
Basalt
Basalt (principally composed of pyroxene and plagioclase feldspar)
Ironstone (with Limonite/Goethite)
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)
Garnet-Bearing Schist
Almandine Garnet Micaceous Schist
Gold (Elemental Metal)
Gold (Au)
Basalt
Extrusive Mafic Igneous Rock (composed primarily of plagioclase, pyroxene, and olivine)
Quartz (Grain)
Silicon Dioxide (SiO2)
Red Sandstone (Arkose)
Clastic Sedimentary Rock (Lithic Arkose)
Pumice
Pumice (a highly vesicular volcanic glass)
Chert (Jasper/Agate variety)
Microcrystalline quartz (SiO2)
Sandstone (Ferruginous)
Arenite (with Iron Oxides)
Sandstone (Quartz-rich)
Arenite (SiO2)
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Basalt
Basalt (Mafic volcanic rock)
Diamond (set in Gold)
Diamond (pure carbon, C)
Vesicular Basalt (commonly mistaken for Slag)
Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)
Rhyolitic Tuff (Breccia Type)
Rhyolitic Pyroclastic Rock (Mixed Silicates including Quartz, Feldspar, and Volcanic Glass)
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
Sandstone (Pebble)
Arenite (SiO2 based)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Schist
Crystalline Schist (often containing Muscovite, Biotte, or Quartz)
Chert (Jasper)
Silicon dioxide (SiO2)
Siltstone
Siltstone (siliciclastic sedimentary rock)
Sandstone (Red Arkose)
Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)