Limonite with Pyrite
Hydrated Iron Oxide Hydroxide, FeO(OH)·nH2O
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Limonite with Pyrite
Hydrated Iron Oxide Hydroxide, FeO(OH)·nH2O
Pyrite
Iron Sulfide (FeS2)
Limestone Breccia
Sedimentary Breccia (Calcareous)
Sandstone
Arenite (primarily SiO2)
Geode
Silicon dioxide (Quartz/Chalcedony) concretion
Zebra Jasper
Silicified sedimentary rock (SiO2) with mineral inclusions
Sandstone Pebble
Quartzose Sandstone (Sedimentary Rock)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Sandstone (with vugs)
Arenite / Sedimentary Sandstone
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
Banded River Stone (Greywacke or Siltstone subtype)
Sedimentary Banded Siltstone
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
Geode
Quartz / Chalcedony nodule
Halite
Halite (Sodium Chloride, NaCl)
Fossil Belemnite Guard
Belemnitella spp. (rostrum)
Red Jasper (or Agate/Jasper mixture)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Quartz Mineral
Silicon Dioxide (SiO2)
Gneiss with Quartz Veining
Gneiss (High-grade Metamorphic Rock)
Sandstone Pebble
Arenite (SiO2 complex)
Gneiss
Gneiss
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
Polished brown river pebble (likely chert or fine-grained sandstone)
Indeterminate; probable microcrystalline quartz (chert) or quartz-rich sandstone
Sandstone
Arenite (primarily SiO2)
Ironstone concretion (possibly pyrite-bearing)
Iron-rich sedimentary concretion, likely composed of goethite/limonite with possible pyrite
Sandstone
Arenite (SiO2 predominantly)
Shark Tooth Fossil
Chondrichthyes (class) fossilized tooth
Red Jasper (or Banded Jasper)
Silicon Dioxide (SiO2 with Hematite impurities)
Quartz pebble
Silicon dioxide (SiO2)
Banded Sandstone (Zebra Stone)
Arenite with Iron Oxide Banding (Liesegang rings)
Limonite Geode / Ironstone Concretion
Hydrated Iron Oxide (FeO(OH)·nH2O)
Sandstone with Liesegang Rings
Quartzose Sandstone with Iron Oxide Precipitation
Worn River Pebble with Fossil Indentation
Sedimentary Rock with Fossil Infill
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
Sandstone
Arenite (predominantly SiO2 with iron oxides)
Limonite
FeO(OH)·n(H2O)
Fossiliferous Shale
Sedimentary Clastic Rock with fossil inclusions (likely Brachiopod or Bivalve impressions)
Geode half
Geode (often quartz/chalcedony based)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
Limonite (Iron Stone Concretion)
Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O
Rhodochrosite
Manganese Carbonate (MnCO3)
Sandstone
Arenite (Sedimentary rock)