Chert (Flint)
Microcrystalline Quartz (SiO2)
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 Iron
Banded Iron Formation (BIF)
sedimentary
Chert (containing Orbicular/Agate patterns)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Amber Flint (Chert)
Cryptocrystalline Quartz (Silicon Dioxide, SiO2)
sedimentary
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
sedimentary
Chert (specifically Black Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Blue-Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Red Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Barite
Barium Sulfate (BaSO4)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Bituminous Coal
Bituminous coal (Organic Sedimentary Rock)
sedimentary
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Jasper (Red/Brown Variety)
Jasper (Microcrystalline Quartz, SiO2)
sedimentary
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
White Zircon
Zircon (Zirconium silicate, ZrSiO4)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite (Botryoidal/Kidney Ore)
Iron(III) oxide (Fe2O3)
mineral
Zebra Jasper
Tumbled Opaque Chalcedony (SiO2)
sedimentary
Bauxite
Bauxite (Al2O3·nH2O)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation (Fe2O3 + SiO2)
sedimentary
Yellow Jasper
SiO2 (Silicon Dioxide)
sedimentary
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
metamorphic (man-made / anthropic)
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Yellow Ocher (Limonite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
mineral
Microcrystalline Quartz (Chert/Agate)
Silicon Dioxide (SiO2)
sedimentary
Bog Iron (Limonite Concretion)
Limonite (FeO(OH)·nH2O)
sedimentary
Magnetite
Magnetite (Fe3O4)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Red Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Asphalt Concrete (Bituminous Concrete)
Bituminous aggregate
sedimentary
Sandstone Concretion
Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)
sedimentary
Hematite
Iron (III) Oxide, Fe2O3
Mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Geode with Iron-Stained Quartz/Calcite
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
Mineral
Bauxite
Bauxite (Mixture of Hydrous Aluminum Oxides)
sedimentary