Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Category
Mineral And Sedimentary
Browse mineral and sedimentary specimens identified by the Rock Identifier community.
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Pyrite
Iron Sulfide (FeS2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Selenite (Gypsum Variety)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Selenite (Satin Spar)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Selenite (Satin Spar Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Pyrite (Fool's Gold) Ore
Iron Disulfide (FeS2)
mineral
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Magnetite Nodule
Magnetite (Fe3O4)
mineral
Pyrite (Fools Gold)
Iron Sulfide (FeS2)
mineral
Satin Spar (Selenite Gypsum Sphere)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Satin Spar Selenite
Gypsum (CaSO4·2H2O)
mineral
Satin Spar (often marketed as Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
River Stone (Quartzite/Siltstone mixture)
Silicon Dioxide (SiO2) based metamorphosed sandstone
metamorphic or sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Yellow Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Satin Spar Selenite (Gypsum)
Calcium sulfate dihydrate (CaSO4·2H2O)
mineral
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Ironstone (with possible Hematite/Limonite coating)
Ironstone (Fe-rich sedimentary rock)
sedimentary
Banded Jasper
Silicon Dioxide with Iron Oxide Inclusions (SiO2)
sedimentary
Quartz (Clear to Smokey)
Silicon Dioxide (SiO2)
mineral
Polished hematite
Hematite (Fe₂O₃), likely a tumbled iron-oxide specimen
mineral
Sulfur (Sulphur)
Sulfur (S8)
mineral
Biotite Mica
K(Mg, Fe)3AlSi3O10(F, OH)2
mineral
Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz)
Silicon Dioxide (SiO2) with iron inclusions
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Limonite Concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
sedimentary
Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary