Chert (specifically a Worked Flint/Knapped Flake)
Chert / Flint (Microcrystalline Quartz, SiO2)
Category
Browse sedimentary (physico chemical precipitate) specimens identified by the Rock Identifier community.
Chert (specifically a Worked Flint/Knapped Flake)
Chert / Flint (Microcrystalline Quartz, SiO2)
Chert (Red Jasper variant)
Microcrystalline Quartz (SiO2)
Chert Pebble (Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (variant Flint)
Silicon Dioxide (SiO2)
Bauxite / Iron-rich Laterite
Laterite (principally Al(OH)3, Fe2O3, and SiO2)
Banded Chert
Microcrystalline silicon dioxide (SiO2)
Chert / River Pebble
Microcrystalline Silica (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (specifically Flint or Jasper variant)
Chert (Siliceous rock composed of microcrystalline Quartz, SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (varieties: Flint or Chalcedony)
Microcrystalline Quartz (SiO2)
Fluorite (Green Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Red Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar with Iron Oxide cement)
Quartzite
Quartzite (SiO2)
Chert (Jasper/Mudstone variant)
Silicon Dioxide (SiO2)
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
Sandstone Pebble with Iron Staining
Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)
Conglomerate
Conglomerate (a clastic sedimentary rock)
Chert (specifically Flint or Common Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Yellow Chert (Gold-toned Jasper)
Silicon Dioxide (SiO2)
Banded Flint / Chert
Silicon Dioxide (SiO2)
Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
Chert (Black Flint)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper/Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (often called Flint when dark)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
Chert (Basanite variety) with Quartz Vein
Microcrystalline Quartz (SiO2)
Chert (Grey Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (and Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (specifically Black Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Fossiliferous Limestone (Chertified Limestone)
Calcium Carbonate (CaCO3) often replaced by Microcrystalline Silica (SiO2)
Halite (Rock Salt)
Halite; NaCl (Sodium Chloride)
Chert (often called Flint in this variation)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert (Jasper/Chalcedony variety)
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Vesicular Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock)
Amethyst
Quartz (Silicon Dioxide, SiO2) with iron impurities
Banded Agate (specifically Sardonyx or Black Agate variety)
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz