Chert (Flint variety)
Chert (SiO2)
Category
Browse sedimentary (secondary classification: cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Flint variety)
Chert (SiO2)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Chert (often called Flint when dark)
Sedimentary cryptocrystalline quartz (SiO2)
River Agate (Chert/Chalcedony)
Cryptocrystalline Quartz (SiO2)
Chert / Flint (River Pebble)
Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
Chert (Green variety)
Cryptocrystalline Quartz (SiO2)
Banded Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Black Chert or Flint)
Cryptocrystalline Quartz (SiO2)
Chert / Pink Flint
Cryptocrystalline Quartz (SiO2)
Yellow Jasper
Cryptocrystalline Quartz (SiO2)
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
Chert (Nodular or Massive Variety)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Yellow/Honey Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert (specifically a Chert Nodule or Flint)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
Chert (Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Chert (Common Chert)
Cryptocrystalline Quartz (SiO2)
Chert (Iron-rich or Jasperoid)
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Chert (with Limestone and Iron Oxide staining)
Cryptocrystalline Quartz (SiO2)
Chert (Black Chert/Flint)
Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or Agate nodule)
Cryptocrystalline Quartz (SiO2)
Chert / Jasper
Sedimentary Cryptocrystalline Quartz (SiO2)
Chert (v. Flint)
Sedimentary Cryptocrystalline Quartz (SiO2)
Banded Agate
Sedimentary Cryptocrystalline Quartz (SiO2)
White Agate (Chalcedony)
Silicon Dioxide (SiO2)
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
Banded Agate (Tumbled)
Cryptocrystalline Quartz (SiO2)
Banded Agate
Cryptocrystalline Quartz (SiO2)
Ferruginous Quartz
Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions
Orange Calcite
Calcium Carbonate (CaCO3)
Geode (unopened)
Calcedony-lined Geode (SiO2)
Chert (with Quartz Veining)
Microcrystalline silicon dioxide (SiO2)
Agate Geode
Cryptocrystalline Quartz (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2) with impurities (mostly Iron Oxides)
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
Chert (and Fossilized Brachiopod shell)
Sedimentary Cryptocrystalline Quartz (SiO2)