Magnetite (Iron Ore)
Magnetite (Fe3O4)
Category
Browse sedimentary (imitation) specimens identified by the Rock Identifier community.
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
Limestone (Weathered Aggregate)
Sedimentary Carbonate Rock (CaCO3)
Sandstone
Arenite (Siliclastic sedimentary rock)
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
Sandstone
Arenite (primarily SiO2)
Sandstone (with minor quartz and possible clay components)
Clastic Sedimentary Rock (SiO2 dominated)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Halite
Halite (NaCl)
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
Marble
Recrystallized Calcite (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Hematite
Iron(III) oxide (Fe2O3)
Pink Satin Spar (Satin Spar Selenite Dyed)
Gypsum (CaSO4·2H2O)
Halite
Halite (NaCl)
Grey Chalcedony (Tumbled Moon)
Microcrystalline Quartz (SiO2)
Howlite
Howlite (Ca2B5SiO9(OH)5)
Sandstone (Pebble)
Arenite (primarily SiO2)
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
Sandstone Pebble
Arenite (primarily SiO2)
Weathered Sandstone with Algae Growth
Arenite
Sandstone (Ferruginous)
Arenite (SiO2 with Iron Oxide impurities)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
Sandstone
Sandstone (clastic sedimentary rock)
Ferruginous Sandstone (Ironstone)
Sedimentary rock with Limonite/Goethite cement
Chert Pebble
Microcrystalline Quartz (SiO2)
Sandstone
Arenite (primarily SiO2)
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Bauxite (Concretionary)
Bauxite (Al(OH)3, AlO(OH))
Sandstone
Arenite (SiO2 principal)
Chert
Chert (Microcrystalline Quartz, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Conglomerate
Conglomerate (SiO2 matrix with various inclusions)
Chert (and Chalcedony)
Silicon Dioxide (SiO2)
Sandstone (Quartzite Pebble)
Arenite (primarily SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)