Banded gneiss (likely amphibolite-bearing gneiss)
Gneiss; quartz–feldspar–mica/amphibole aggregate
metamorphic
Category
Mineral And Sedimentary
Browse mineral and sedimentary specimens identified by the Rock Identifier community.
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Shale or Mudstone
Argillaceous sedimentary rock
sedimentary
Sandstone (Pebble)
Sandstone (principally SiO2 with iron oxide impurities)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Banded Sandstone (Zebra Stone)
Arenite with Iron Oxide Banding (Liesegang rings)
sedimentary
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Geode
Quartz / Chalcedony nodule
sedimentary
Chalcopyrite
CuFeS2
mineral
Galena
Lead Sulfide (PbS)
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Sandstone with Liesegang Rings
Quartzose Sandstone with Iron Oxide Precipitation
sedimentary
Limonite
FeO(OH)·n(H2O)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Orange Calcite (Cleavage Rhomb)
Calcite (Calcium Carbonate, CaCO3)
mineral
Ironstone (Limonite/Hematite concretion)
Ferruginous Siltstone / Goethite (FeO(OH))
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Shale
Laminated Mudstone
sedimentary
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Yellow Ochre / Limonite
Hydrated ferric oxide (FeO(OH)·nH2O)
mineral
Sandstone (likely with Quartz Veining)
Arenite (primarily SiO2)
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Flagstone
Sedimentary Sandstone / Flagstone
sedimentary
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartz Veined Mudstone
Metasedimentary rock with Quartz (SiO2) veins
metamorphic
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral
Coquina / Shelly Sandstone
Calcareous Sandstone / Coquina
sedimentary
Sphalerite
Zinc Sulfide (ZnS)
mineral
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
sedimentary
Zebra Jasper
Silicified sedimentary rock (SiO2) with mineral inclusions
sedimentary
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Limonite (Ironstone)
Hydrated Iron Oxide (FeO(OH)·nH2O)
mineral
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Quartz Geode
Silicon Dioxide (SiO2) in Calcareous or Siliceous Matrix
mineral
Sandstone
Arenite
sedimentary
Sandstone
Arenite
sedimentary