Hematite
Iron(III) oxide (Fe2O3)
mineral
Category
Man Made Composite (Lithified Equivalent Of Sedimentary)
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
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Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (primarily SiO2 with Fe2O3)
sedimentary
Quartz (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Selenite (Satin Spar)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Potassium Feldspar and Quartz
KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red Sandstone
Arenite (SiO2 based with Fe2O3)
sedimentary
Red Claystone / Mudstone
Argillaceous sedimentary rock
sedimentary
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Pink Granite
Phaneritic Plutonic Felsic Rock (K-feldspar rich)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Jasper (Green)
Silicon dioxide (SiO2)
Mineral/Sedimentary
Sandstone (with biological crust)
Arenite (SiO2 based)
sedimentary
Sandstone Cobble
Arenite (predominantly Quartz Sandstone)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Pyrite with Galena and Sphalerite on Matrix
Iron Sulfide (FeS2), Lead Sulfide (PbS), Zinc Sulfide (ZnS)
mineral
Hematite Nodule
Hematite (Fe2O3)
mineral
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Pink Quartz / Rose Quartz
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Fluorite
Calcium Fluoride (CaF2)
mineral