Sandstone
Arenite (Sedimentary Rock)
Category
Browse sedimentary or mineral specimens identified by the Rock Identifier community.
Sandstone
Arenite (Sedimentary Rock)
Pink Quartz
Silicon Dioxide (Quartz), SiO2
Mica
Mica group (often Muscovite or Biotite)
Polished Stone Pendant (Identity Unclear)
Unknown (Possibly Jasper/Agate/Quartz mixture)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Dendritic Agate or Manganese Nodule in Chert/Limestone
Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions
Mixed Mineral Collection
Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)
Red Sandstone (Iron-stained)
Clastic sedimentary rock (primarily Quartz with Iron Oxides)
Sandstone
Arenite (SiO2 based)
Magnetite or Hematite Nodule
Iron Oxide (Fe3O4 or Fe2O3)
Massive White Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Hematite
Iron Oxide (Fe2O3)
Satin Spar (Gypsum)
Gypsum (Satin Spar variety) - CaSO4·2H2O
Magnetite / Lodestone
Magnetite (Fe3O4)
Magnetite / Hematite mix
Magnetite (Fe3O4) and Hematite (Fe2O3)
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
Baryte (Barite)
Barium sulfate (BaSO4)
Quartz Geode (Cracked)
Silicon Dioxide (SiO2)
Quartz Geode (with Calcite influence)
Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Quartz Geode with Calcite
Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Celestite (Celestine) Geode
Strontium Sulfate (SrSO4)
Magnetite
Iron(II,III) oxide (Fe3O4)
Hematite Ball
Iron(III) oxide (Fe2O3)
Pyrite
Iron Disulfide (FeS2)
Botryoidal Quartz
Silicon Dioxide (SiO2)
Sandstone Pebble
Arenite
Weathered sandstone or arkosic sandstone
Clastic sandstone, likely quartz–feldspar-rich (arkose)
Gossanous Sandstone (likely Terrestrial)
Arenite with Iron-Oxide inclusions
Sandstone (Iron-stained)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Sandstone (Weathered / Crushed)
Quartz Sandstone
Brown Chalcedony
Silicon Dioxide (SiO2)
Quartz (Rose Quartz or Chert variant)
Silicon Dioxide (SiO2)
Quartz (Agate/Jasper pebble)
Silicon Dioxide (SiO2)
Banded Agate with Drusy Quartz
Cryptocrystalline Quartz (SiO2) with macrocrystalline Quartz
Quartz with Calcite / Geode Fragment
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)
Limonite / Ironstone Nodule
Hydrated Iron Oxide (FeO(OH)·nH2O)