Chert (Flint Nodules)
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Chert (Flint Nodules)
Microcrystalline Quartz (SiO2)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert Pebble
Microcrystalline Quartz (SiO2)
Banded Calcite (often commercially sold as 'Mexican Onyx' or 'Honey Onyx')
Calcite (Calcium Carbonate, CaCO3)
Bauxite
Hydrated Aluminum Oxides (primarily Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
Fossiliferous Limestone (Coquina / Shell Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
Gneiss
High-grade foliated metamorphic rock
Quartz
Silicon Dioxide (SiO₂)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Quartz (Grain/Pebble)
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert Pebble
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Agate
Banded Chalcedony (SiO2)
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Limestone
Calcium Carbonate (CaCO3)
Chert (Nodule/Pebble)
Chert (Silicon Dioxide, SiO2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (Nodule)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Limestone
Sedimentary rock composed primarily of Calcium Carbonate (CaCO3)
Pyrite (Fools Gold)
Iron Sulfide (FeS2)
Chert (Grey/Black variety)
Chert (Silicon Dioxide, SiO2)
Chert (Iron-stained)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert / Flint
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Banded Agate (specifically Carnelian Agate slice)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
Limestone
Calcium Carbonate (CaCO3)
Chert (variously Flint or Jasper gravel)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Septarian Nodules / Weathered Silex)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Yellow Jasper (Limonite-stained Chert)
Silicon Dioxide (SiO2) with Limonite/Goethite inclusions
Chert (River Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert / Pink Flint
Cryptocrystalline Quartz (SiO2)
Chert (specifically Chalcedony/Flint variant)
Silicon Dioxide (SiO2)
Chert (specifically Green Chert/Jasper)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chert (with Quartz Veining)
Chert (formula: SiO2)