Anthropogenic Material (Man Made Sedimentary Mimic)

Jasper (Petrified Wood Variety)

Silicon Dioxide (SiO2)

Limonite (Iron-rich Siltstone / Sandstone base)

Hydrous ferric oxide mixture (FeO(OH)·nH2O)

Mica Schist

Schist (Muscovite/Biotite Schist)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Chert (variations include Flint/Jasper)

Chert (SiO2)

Fossiliferous Shale Matrix

Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments

Chert (with Quartz Vein)

Chert (Siliceous sedimentary rock, predominantly Microcrystalline Quartz SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Chert (varieties include Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ferruginous Sandstone (with possible trace fossils)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)

Red Jasper (River Siltstone)

Silicon Dioxide (SiO2) with iron oxide inclusions

Bauxite / Iron-rich Laterite

Laterite (principally Al(OH)3, Fe2O3, and SiO2)

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

Ferruginous Breccia

Breccia with Iron-rich (Hematite/Goethite) Matrix

Chert (White Flint)

Microcrystalline Quartz (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide staining/cementing)

Red Siltstone

Siltstone (composed mainly of SiO2 and Fe2O3)

Flagstone (Sandstone)

Clastic Sedimentary Rock (composed of quartz and feldspar)

Honey Calcite

Calcium Carbonate (CaCO3)

Graphite

Graphite (Native Carbon, C)

Chert (specifically Flint or Common Opal/Chalcedony mix)

Microcrystalline Quartz (SiO2)

Sandstone (Quartz-rich)

Arenite (SiO2 based)

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Chert (specifically Jasper/Flint)

Chert (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Yellow Jasper

Silicon Dioxide (SiO₂)

Chert (Jasper nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Jasper (Petrified Wood variant)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (and Petrified Wood)

Silicon Dioxide (SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate

Conglomerate (Detrital sedimentary rock)

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Green Jasper

Silicon Dioxide (SiO2)

Chert (varieties include Flint and Jasper)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Petrified Wood

Silicified Wood (SiO2 permineralization)

Devil's Toenail

Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)

Conglomerate

Conglomerate (clastic sedimentary rock)

Pyrite

Iron Sulfide (FeS2)

Quartz Vein in Host Rock (Breccia/Rhyolite)

Silicon Dioxide (SiO2) with matrix

Chert (concretionary/nodular variant)

Microcrystalline Quartz (SiO2) with possible fossil or mineral inclusions

Chert (Flint/Jasper variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)