Pyrite in Shale
Iron Disulfide (FeS2) in Sedimentary Shale
Category
Browse marble specimens identified by the Rock Identifier community.
Pyrite in Shale
Iron Disulfide (FeS2) in Sedimentary Shale
Diamond
Cubic carbon (C)
Banded Iron Formation (BIF)
Magnetite-Hematite Chert (Banded Iron Formation)
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert (White Variety)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Coquina (Hag Stone variant)
Biocalcarenite (Coquina)
Concretion in Shale
Siltstone/Shale with Siderite or Calcareous concretions
Banded Chert
Microcrystalline Quartz (SiO2)
Greywacke
Lithic Sandstone
Diamond
Carbon (C)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite with Iron Oxide (Limonite/Hematite) coating
Sandstone (Greywacke)
Sandstone (SiO2 enriched with lithic fragments)
Chert (Nodule)
Silicon Dioxide (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Chert (Red Jasper)
Microcrystalline Quartz (SiO2)
Diamond
Carbon (C)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone Pebble
Arenite (primarily SiO2)
Chert (Green variety)
Microcrystalline Quartz (SiO2)
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Serpentine
Serpentinite (complex of Mg, Fe, Ni, Al, Zn, Mn)Si2O5(OH)4
Chert (Flint)
Microcrystalline Quartz (SiO2)
Ironstone (possibly Bog Iron or Limonite)
Goethite-rich Ironstone (FeO(OH))
Blue Anhydrite
Anhydrite (CaSO4)
Serpentinite
Serpentinite (complex silicate minerals including Lizardite, Antigorite, and Chrysotile)
Coquina (Fossiliferous Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
Diamond
Carbon (C) - Native Element
Flagstone (Sandstone)
Clastic Sedimentary Rock (composed of quartz and feldspar)
Septarian Nodule
Septarian concretion (Complex mixture of Siderite, Calcite, and Aragonite)
Sandstone with Bedding Planes
Arenite (Sedimentary rock composed primarily of sand-sized minerals)
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Fossilized Coral in Chert
Anthozoa (Class) fossil in Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Sandstone (Iron-stained)
Arenite (primarily SiO2 with Fe2O3 staining)
Banded Chert (Flint)
Silicon Dioxide (SiO2)