Organic Mineraloid And Mineral

Chert (with Calcite Veining)

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) veins

Chert (specifically Green Chert/Jasper)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Tufa (Calcareous Tufa)

Calcareous Tufa (CaCO3)

Chert (specifically Chalcedony/Flint variant)

Silicon Dioxide (SiO2)

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Anthracite Coal

Anthracite

Chert (Black Flint)

Silicon Dioxide (SiO2)

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Tan/Yellow Chert)

Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (CaCO3)

Chert (variously identified as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Nodule)

Chert (SiO2)

Chert (and Limestone)

Silicon Dioxide (SiO2)

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Pink Chert (Brecciated Jasmine/Jasper)

Silicon Dioxide (SiO2)

Chert / Quartz Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Chert / Flint

Cryptocrystalline Quartz (Silicon Dioxide, SiO2)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Chert (Quartz Pebble)

Silicon Dioxide (SiO2)

Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Chert (Iron-Stained)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Chert Pebble with Quartz Veining

Microcrystalline Quartz (SiO2)

Brown Jasper / Chert Pebbles

Microcrystalline Quartz (SiO2) with iron oxide impurities

Chert (varietal: Jasper or Ironstone nodule)

Microcrystalline Quartz (SiO2) with iron oxides

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Bioclasts

Chert (Smooth River Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (within Asphalt)

Chert (SiO2)

Chert (Jasper-bearing)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Chert (specifically River Stone / Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (Hag Stone / Hole Stone)

Chert (Cryptocrystalline variety of Quartz, SiO2)

Chert (Black Chert/Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Fossiliferous Limestone (containing Brachiopods)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Chert (specifically Chert Nodule/Flint)

Chert (Silicon Dioxide, SiO2)

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Field Stone)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Banded Chert (or Flint)

Microcrystalline Quartz (SiO2)

Chert (Brown variety)

Silicon Dioxide (SiO2)