Anthropogenic Material (Man Made Sedimentary Mimic)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (and Flint)

Silicon Dioxide (SiO2)

Chert (containing Quartz)

Microcrystalline Silica (SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock type)

Banded Sandstone

Arenite (composed primarily of Quartz: SiO2)

Chert (and Chert Geode)

Silicon Dioxide (SiO2)

Chert (often called Flint when dark or found in chalk)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint or Jasper)

Silicon Dioxide (SiO2)

Chert (Yellow/Tan Variety)

Chert (SiO2)

Chert (Commonly known as Flint)

Microcrystalline Quartz (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Chert (specifically Iron-stained River Cobble)

Silicon Dioxide (SiO2)

Red Sandstone

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)

Chert (also known as Flint or Common Chalcedony)

Cryptocrystalline Silica (SiO2)

Coquina

Bioclastic Limestone (composed of CaCO3)

Chert (Flint variety)

Chert (Cryptocrystalline variety of Quartz, SiO2)

Septarian Nodule

Septarian Concretion (Complex of Calcite, Aragonite, and Limestone/Mudstone)

Banded Onyx (Cave Calcite)

Calcite (CaCO3), often called Mexican Onyx or Travertine

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Chert (varieties include Flint and Jasper)

Silicon Dioxide (SiO2)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Siltstone

Siltstone (primarily composed of SiO2)

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide)

Leopard Skin Jasper

Orbicular Rhyolite (Silicon Dioxide with various impurities)

Marble

Recrystallized Calcite (CaCO3)

Laterite

Laterite (no specific mineral formula as it's a rock type)

Chert (often called Flint in dark varieties)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (variations include Flint)

Chert (SiO2)

Silty Sand / Loam

Unconsolidated Clastic Sediment (Silicon Dioxide / Alumino-silicates mixture)

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / Flint (with Iron Staining)

Silicon Dioxide (SiO2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Field Stone)

Microcrystalline / Cryptocrystalline Quartz (SiO2)

Chert

Microcrystalline Quartz (SiO2)

Chert (Jasper variety)

Chert (SiO2)

Chert

Microcrystalline Quartz (SiO2)

Chert (Jasper/Flint variety)

Silicon dioxide (SiO2)

Chert / Flint

Cryptocrystalline Quartz (SiO2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)