Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Cryptocrystalline Silica (SiO2)
Celestine (Celestite)
Strontium Sulfate (SrSO4)
Botryoidal Pyrite
Iron Sulfide (FeS2)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Shale
Argillaceous Rock
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
Chert (Dark Variety / Flint)
Silicon Dioxide (SiO2)
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint Nodules)
Silicon Dioxide (SiO2)
Chert (and/or Chalcedony)
Microcrystalline Silica (SiO2)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (variations include Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Yellow or Brown Jasper)
Microcrystalline Quartz (SiO2)
Limonite and Goethite encrusted Chert/Ironstone
Hydrated Iron Oxide (FeO(OH)·nH2O) with cryptocrystalline Silica (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcite (Calcium Carbonate - CaCO3)
Fossiliferous Limestone
Calcareous biomicrite / Calcium Carbonate (CaCO3)
Red Sandstone
Arenite (Ferruginous Sandstone)
Chert (specifically Tan Chert)
Chert (SiO2)
Banded Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Fossiliferous Chert (with Fossil Shells)
Silicon Dioxide (SiO2) with biogenic inclusions
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Chalcedony nodule)
Microcrystalline Quartz (SiO2)
Chert (Pebble)
Chert (Microcrystalline Quartz, SiO2)
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert (variations include Flint or Jasper)
Chert (SiO2)
Chert (Iron-rich)
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Chert (Chalk-associated Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variant Flint)
Silicon Dioxide (SiO2)
Sandstone (Quartzose Sandstone)
Arenite (SiO2)
White Chalcedony (Agate)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Sandstone (Red Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)
Blue Chalcedony (likely dyed)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Galena
Lead Sulfide (PbS)