Pyrite
Iron Sulfide (FeS2)
Category
Browse mineral precipitate (anthropogenic context) specimens identified by the Rock Identifier community.
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
Marble
Recrystallized Calcite Rock (CaCO3)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Lapis Lazuli (Simulated)
Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Garnet
Garnet Group (Silicate Minerals)
Himalayan Salt (Halite)
Halite (NaCl) with trace minerals
Nephrite Jade (or Serpentine)
Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with tarnish
White Marble
Recrystallized Calcite (CaCO3)
Marble (Calcitic)
Metamorphosed Limestone (CaCO3)
Rhodonite (in matrix)
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Marble
Recrystallized Calcite / Dolomite (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Granite Pebble (Salt and Pepper Granite)
Felsic Intrusive Igneous Rock (Granite)
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Vesicular Basalt with Pyrite
Basalt (MgFe2+)(Si,Al)2O6 containing FeS2 inclusions
Granite
Phaneritic Felsic Igneous Rock
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
White Quartz Star
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily SiO2)
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
Jasper
Jasper (Silicon Dioxide, SiO2)
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
Pyrite
Iron Sulfide (FeS2)
Marble
Recrystallized Calcite / Dolomite (CaCO3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Magnetite
Magnetite (Fe3O4)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Peacock Ore
Bornite (Cu5FeS4)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
Milky Quartz with Chlorite inclusions
Silicon Dioxide (SiO2) with Chlorite group minerals
Erythrite
Erythrite (Cobalt Bloom) - Co3(AsO4)2·8H2O