Sedimentary

Leopard Skin Jasper

Orbicular Rhyolite (Silicon Dioxide with various impurities)

Laterite

Laterite (Iron/Aluminum-rich oxide)

Jasper with Quartz vein

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert / Flint (with Crinoid Stem Molds)

Microcrystalline Quartz (SiO2)

Dendritic Jasper (Bumblebee like Agate)

Silicon Dioxide with inclusions (SiO2)

Jasper

Jasper / Silicon Dioxide (SiO₂)

Chert (often called Flint)

Cryptocrystalline Quartz (SiO2)

Wishing Stone (Sandstone with Quartz Vein)

Arenite with Quartzite intrusion (SiO₂)

Greywacke (River Siltstone)

Lithic Sandstone / Greywacke

Chert (containing Flint and Chalcedony)

Microcrystalline Quartz (SiO2)

Chert (Arrowhead/Tool variety)

Microcrystalline Quartz (SiO2)

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Fossiliferous Limestone (Coquina / Shell Limestone)

Bioclastic Limestone (CaCO3)

Ferruginous Chert (Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Petrified Wood

Silicified Wood (SiO2)

Yellow Jasper (Iron-stained Quartz)

Jasper (Silicon Dioxide, SiO2 plus iron oxide impurities)

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Crinoid Stem Columns (Fossil)

Crinoidea (Class); often composed of the mineral Calcite (CaCO3)

African Turquoise

Teal Jasper (Macro-crystalline Quartz/Sio2 + Inclusions of Copper, Iron, and Manganese)

Flower Jasper

Agatized Fossil Coral / Chalcedony (SiO2)

Jasper

Silicon Dioxide (SiO2)

Chert (often called Flint)

Chert (Microcrystalline Silicon Dioxide, SiO2)

Yellow Jasper

Jasper (SiO2) with iron hydroxide inclusions

Chert (specifically Flint or Gray Chert)

Silicon Dioxide (Microcrystalline Quartz), SiO2

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

Fossiliferous Chert (Chert with Crinoid Stem Impression)

Chert (SiO2) with fossil Anthozoan or Crinoid columnals

Jasper

Silicon dioxide (SiO2) with impurities

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Gray/Black Chert)

Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)

Petrified Wood

Silicified Wood (SiO2)

Jasper (Red/Brown Variety)

Jasper (Microcrystalline Quartz, SiO2)

Chert (variations include Flint)

Chert (Silicon Dioxide, SiO2)

Red Jasper

Jasper (Silica with Iron Oxide inclusions), SiO2

Chert (specifically Blue or Grey Chert/Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Moqui Marble (Iron Concretion)

Iron Oxide Concretion (Goethite/Hematite Cemented Sandstone)

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Red Jasper (Heliotrope family variant)

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Fossil Coral (Honeycomb Coral)

Favosites (extinct genus of Tabulate coral)

Chert (variations include Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)