Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Category
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Yellow Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
Blue Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide - SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Orange Calcite
Calcium Carbonate (CaCO3)
Quartz Geode
Silicon Dioxide (SiO2)
White Marble
Recrystallized Calcite (CaCO3)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Turquoise (Rough)
Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Orange Calcite
Calcium Carbonate (CaCO3)
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
Quartz Pebble (likely Chalcedony or Quartzite)
Silicon Dioxide (SiO2)
Psilomelane (Manganese Ore)
Psilomelane (Ba,H2O)2Mn5O10
Green Calcite
Calcium Carbonate (CaCO3)
Fancy Jasper
Silicon Dioxide (SiO₂)
Howlite
Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
Celestine (Celestite)
Strontium sulfate (SrSO4)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Coprolite
Coprolite
Strawberry Quartz
Quartz (SiO2) with inclusions of Goethite or Hematite
Red Sandstone
Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)
Sandstone with Liesegang Rings
Arenite with Iron Oxide Concretions
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
Sandstone (likely Greywacke or Siltstone variety)
Arenite / Siltstone (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
Banded Agate (Chert/Chaldcedony)
Silicon Dioxide (SiO₂)
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Sandstone
Arenite (SiO2 based typically)
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
Bauxite
Bauxite (Al2O3·2H2O)
Sandstone
Arenite
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
Magnetite (Lodestone variety)
Magnetite (Iron(II,III) oxide, Fe3O4)
Turquoise
Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O