Mineral (Or Mineraloid If Microcrystalline)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Red Jasper

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

Banded Chert (or Banded Jasper)

Silicon Dioxide (SiO2) with Iron Oxide impurities (Hematite/Goethite)

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Zebra Rock / Zebra Marble

Banded Limestone-Marble Transition

Chert / Flint

Chert (varietal name for microcrystalline quartz). Chemical formula: SiO₂

Red Quartzite (River Pebble)

Quartzite (primarily Silicon Dioxide - SiO2)

Jasper River Stone

Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)

Jasper with Hematite inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper (Iron-stained)

Silicon Dioxide (SiO2) with iron oxide inclusions

Limestone (Ocherous)

Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)

Chert (varieties include Flint and Jasper)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Banded Iron Formation (BIF) with Quartz

Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)

Jasper with Agate Inclusions

Silicon Dioxide (SiO2) - variety of Quartz/Chert

Blue Quartzite

Silicon Dioxide (SiO2) with inclusions

Red Jasper (Opaque Chalcedony)

Silicon Dioxide (SiO2) with Hematite inclusions

Red Jasper

Jasper (Silicon Dioxide based crypto-crystalline Quartz with Iron inclusions)

Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper

Silicon Dioxide (SiO2) with impurities

Jade (Nephrite or Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 (amphibole mineral); Jadeite: NaAlSi2O6 (pyroxene mineral)

Oolitic Ironstone

Sedimentary Ooidal Ironstone (Limonite/Hematite mixture)

Jasper

Jasper (Cryptocrystalline Quartz; SiO2)

Jasper

Silicon dioxide (SiO2) with impurities

Greenstone (Epidote/Chlorite-rich Metabasalt)

Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))

Jasper

Jasper (Silicon Dioxide, SiO2)

Yellow Quartzite Pebble

Quartzite (primarily Silicon Dioxide - SiO2)

Jasper

Jasper (Silicon Dioxide, SiO2 with iron inclusions)

Picture Jasper

Silicon Dioxide (SiO2) with impurities

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper with Iron Staining

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities

Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')

Calcite (CaCO3)

Moqui Marble (Concretion)

Iron Oxide Concretion (Hematite-cemented Sandstone)

Quartzite (River Pebble)

Metamorphosed sandstone (SiO2)

Kambaba Jasper

Stromatolite (Fossilized Algae within Microcrystalline Quartz)

Vesicular Basalt with Quartz/Chalcedony

Vesicular Basalt (primarily Plagioclase, Pyroxene, and Olivine with SiO2 infill)

Limonite and Goethite encrusted Quartz (Iron-stained Gossan)

FeO(OH)·nH2O (Limonite) / FeO(OH) (Goethite) on SiO2 (Quartz)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Quartzite with Iron Hydroxide Staining

Quartzite (primarily SiO2) with Limonite/Goethite staining

Jasper (River pebble)

Jasper / Silicon Dioxide (SiO2)

Green Quartzite (Aventurine variety)

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Petrified Wood

Silicified Wood (SiO2)