Sandstone
Arenite (composed primarily of SiO2)
Category
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Agate with Druzy Quartz
Silicon Dioxide (SiO2)
Sandstone (Quartzose)
Arenite (composed mainly of SiO2)
Sandstone (Quartzite texture)
Arenite (SiO2 secondary)
Red Sandstone
Arenite (Ferruginous Sandstone)
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Garnet (specifically Almandine)
Almandine (Fe3Al2(SiO4)3)
Hematite Nodule
Hematite (Fe2O3)
Sandstone (Quartz-rich)
Clastic sedimentary rock (SiO2 primary)
Sandstone (Glacial Cobble)
Arenite / Sedimentary Rock (primarily SiO2)
Sandstone Concretion
Sedimentary Concretion (SiO2 or CaCO3 cemented)
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (likely Arkose)
Arenite (Feldspathic Sandstone / Arkose)
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Sandstone (with Liesegang rings or Oxidation)
Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
Petrified Wood
Silicon Dioxide (SiO2) - Calcified / Silicified Wood
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz, SiO2)
Banded Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily Quartzite and Feldspar grains)
Amethyst (Raw Quartz)
Silicon Dioxide (SiO2) with iron impurities
Turquoise
Hydrated phosphate of copper and aluminum - CuAl6(PO4)4(OH)8·4H2O
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
Concretion with Quartz Veining
Septarian Concretion (CaCO3 / SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Ametrine
SiO2 (silicon dioxide)
Sandstone
Arenite (primarily SiO2)
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Sandstone Geode (Unbroken)
Siliciclastic sedimentary rock (primarily Quartz)
Tree Agate
Dendritic Chalcedony (SiO2)
Limonite (Gozzany Iron)
Limonite (FeO(OH)·nH2O)
Herkimer Diamond (Quartz Crystal)
Silicon Dioxide (SiO2)
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
Pyrite Geode (Sparkling Druzy)
Iron Sulfide (FeS2) in Sedimentary Nodule
Pyrite in Shale
Iron Disulfide (FeS2) in Sedimentary Shale
Sandstone (Pebble)
Clastic sedimentary rock (SiO2 primary)
Conglomerate
Conglomerate (clastic sedimentary rock)