Pyrite
Iron Pyrite (FeS2)
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Pyrite
Iron Pyrite (FeS2)
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (Lithic Sandstone)
Cinnabar
Mercury(II) sulfide (HgS)
Sandstone (Red Sandstone / River Stone)
Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Limestone (with Calcite Veining)
Calcium Carbonate (CaCO3)
Red Sandstone
Arenite (primarily Quartz with Iron Oxide)
Limonite (Ironstone Concretion)
Limonite (Hydrous Ferric Oxides mixed with Goethite)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated Iron Oxide)
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with Fe2O3)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
Rhodochrosite
Manganese carbonate (MnCO3)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Sandstone
Arenite (primarily SiO2)
Sandstone Pebble
Arenite (primarily SiO2)
Sandstone
Arenite/Quartz Arenite
Gneiss
Gneiss (High-grade Metamorphic Rock)
Bauxite
AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
Calcite with Quartz coating
Calcium Carbonate (CaCO3) with Silicon Dioxide (SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Sandstone (Micaceous)
Arenite (primarily SiO2 with Phyllosilicates)
Sandstone Concretion
Clastic sedimentary rock (primarily Silica, SiO2, or Calcium Carbonate, CaCO3)
Green Fluorite
Calcium Fluoride (CaF2)
Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Limonite and Goethite
Limonite (hydrated iron(III) oxide-hydroxide) and Goethite (α-FeO(OH))
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 cementation)
Native Copper
Native Copper (Cu)
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Fe2O3 cement)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Limonite/Goethite staining)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)