Anthropogenic Sedimentary Style Organic Solid

Limestone (Fossiliferous)

Calcium Carbonate (CaCO3) - Bioclastic Limestone

Chert (Tan/Yellow variety)

Microcrystalline quartz (SiO2)

Chert (and Chalcedony)

Silicon Dioxide (SiO2)

Green Jasper

Silicon Dioxide (SiO2) with impurities of iron(II) silicate

Chert (Nodule)

Chert (composition: SiO2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Chert Nodule

Chert (Cryptocrystalline variety of Quartz, SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Cherty Shale / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Yellow/Honey Jasper variety)

Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Chalcedony variety)

Microcrystalline Quartz (SiO2)

Chert

Microcrystalline Quartz (SiO2)

Yellow Jasper / Chert

Jasper (Silica/Quartz) - SiO2

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper-rich)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ironstone Concretion (Iron-rich Mudstone)

Siderite / Geothite concretion (FeCO3 / FeO(OH))

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert (specifically Banded Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (and Flint)

Silicon Dioxide (SiO2)

Glauconite (Sandstone or Shale)

Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

Coal (Bituminous or Anthracite)

Carbonaceous sedimentary rock (primarily Carbon, C)

Chert (Flint Nodules)

Silicon Dioxide (SiO2)

Chert (Holey Stone)

Microcrystalline Quartz (SiO2)

Amber

Succinite (Organic Mineraloid)

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Chert Pebble Map

Microcrystalline Quartz (SiO2)

Green Chert

Microcrystalline Quartz (SiO2)

Chert

Microcrystalline Quartz (SiO2)

Chert (Arrowhead Artifact)

Chert (SiO2)

Druzy Quartz Geode (likely Smokey Quartz variety)

Silicon Dioxide (SiO2) - specifically a geode formation lined with druzy quartz crystals, with a likely brownish hue indicating smokey quartz.

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Limestone (Concretionary or Tufa)

Calcium Carbonate (CaCO3)

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Banded Chert

Sedimentary Cryptocrystalline Quartz (SiO2)

Fossilized Shark Tooth (Basal Bone)

Otodus sp. (Mineralized Hydroxyapatite)

Chert (Yellow/Tan)

Microcrystalline Quartz (SiO2)

Chert (Flint variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (with Limestone/Dolomite host)

Microcrystalline Quartz (SiO2)

Chert (Black Chert or Flint)

Silicon Dioxide (SiO2)