Pyrite
Iron Sulfide (FeS2)
Category
Browse metamorphic (localized) or sedimentary specimens identified by the Rock Identifier community.
Pyrite
Iron Sulfide (FeS2)
Magnetite
Magnetite (Fe3O4)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Galena
Lead(II) sulfide (PbS)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Garnet (Almandine)
Almandine, Fe3Al2Si3O12
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
Riverstone (Quartzite or Siltstone cobble)
Quartzite (primarily SiO2)
Specular Hematite
Specularite (Fe2O3)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Kyanite
Kyanite (Al2SiO5)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Pyrite
Iron Sulfide (FeS2)
Orange Calcite
Calcium Carbonate (CaCO3)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Fluorite, Turquoise, and Calcite set
Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)
Green Opal
Hydrated Silica (SiO2·nH2O)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Graphite
Graphite (C)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Yellow Calcite
Calcium Carbonate (CaCO3)
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur).
Galena (PbS)
Pyrite (on the right) and Magnetite or Hematite (on the left)
Iron Sulfide (FeS2) and Iron Oxide (Fe3O4 or Fe2O3)
Pyrite
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
Kyanite
Kyanite (Al2SiO5)
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Muscovite Schist with Quartz
Mica Schist (KAl2(AlSi3O10)(OH)2)