Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
sedimentary
Category
Sedimentary (Primary) With Artificial Modification
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
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Tiger's Eye, Hematite, and Black Obsidian Bracelet
SiO2 (Tiger's Eye), Fe2O3 (Hematite), and 70-75% SiO2 (Obsidian)
mineral
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Red Hematite
Iron(III) oxide (Fe2O3)
mineral
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variety)
Silicon dioxide (SiO2)
sedimentary
Flint (Chert)
Cryptocrystalline Silica (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Amber Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint/Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Flint/Novaculite)
Microcrystalline Quartz (SiO2)
sedimentary
Magnetite
Magnetite (Fe3O4)
mineral
Chert (Black Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Asphalt (Aggregate)
Bituminous macadam / Concrete Aggregate
sedimentary
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
metamorphic
Bloodstone Jasper (Heliotrope)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
sedimentary
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Sandstone (specifically Double Arch in Arches National Park)
Entrada Sandstone
sedimentary
Banded Iron Formation (BIF) / Tiger Iron
Banded Iron Formation containing Hematite (Fe2O3) and Magnetite (Fe3O4)
sedimentary
Bauxite (Laterite Clay)
Bauxite (mixture of Hydrous Aluminum Oxides: Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Green Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Grey Slate
Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)
metamorphic
Quartz / Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Yellow Jasper / Chert
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
sedimentary
Chert (Yellow/Tan)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Greenish-Grey variety)
Microcrystalline quartz (SiO2)
sedimentary
Conglomerate with Fossilized Shark Teeth
Clastic sedimentary rock (Conglomerate) containing Elasmobranchii remains
sedimentary
Himalayan Pink Salt
Halite (NaCl) with trace minerals
mineral
Agate
Chalcedony (cryptocrystalline variety of Quartz, SiO2)
mineral
Botryoidal Hematite (Kidney Ore)
Hematite (Fe2O3)
mineral
Red Hematite
Iron(III) Oxide (Fe2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral