Magnetite
Magnetite (Fe3O4)
mineral
Category
Mineral (Sedimentary Context)
Browse mineral (sedimentary context) specimens identified by the Rock Identifier community.
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite pseudo-concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
sedimentary
Banded gneiss
Gneiss, commonly quartz–feldspar–mica gneiss
metamorphic
Limonite
FeO(OH)·nH2O
mineral
Polished Hematite Tower
Hematite (Fe2O3)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Pebble
Clast (specifically a granule or small pebble)
Sedimentary
Granite
Felsic intrusive igneous rock
igneous
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
sedimentary
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Shale (sub-type: Carbonaceous Shale)
Lutaceous Sedimentary Rock
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Marble
Recrystallized Calcite (CaCO3) Rock
metamorphic
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Sandstone (River Cobble / Pebble)
Sedimentary Rock (Quartz Sandstone / Arenite)
sedimentary
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Blue Howlite (Dyed)
Dyed Howlite (Calcium Borosilicate Hydroxide, Ca2B5SiO9(OH)5)
mineral
Blue Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Sandstone Concretion
Sedimentary concretion
Sedimentary
Likely banded gneiss
Gneiss, a foliated metamorphic rock composed chiefly of quartz, feldspar, and mica
metamorphic
Limonite (Ironstone)
FeO(OH)·nH2O
sedimentary
Limonite / Ironstone
Hydrated Iron Oxide (FeO(OH)·nH2O)
sedimentary
Limonite/Ironstone
Limonite (FeO(OH)·nH2O)
mineral
Pyrite with Quartz
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Sandstone (with minor weathering/pitting)
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Galena
Lead Sulfide (PbS)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral