Mineral (Variety Of Quartz)

Apatite

Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with impurities

Chert (Flint)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Sandstone (likely Arkose or Quartz Sandstone)

Arenite (SiO2 principal component)

Red Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Jasper variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Pebble)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Chert / Red Jasper

Microcrystalline Quartz (SiO2)

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

Calcium Carbonate (CaCO3)

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with iron oxide inclusions/staining (Limonite/Hematite)

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (CaSO4·2H2O)

Quartz (Milky or Iron-Stained)

Silicon Dioxide (SiO2)

Quartz crystal with Pyrite inclusions

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Chert

Siliceous sedimentary rock (predominantly microcrystalline quartz, SiO2)

Granite

Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Yellow Quartz (or Citrine Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Ferruginous Quartz

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

Chert (often called Flint or River Stone)

Chert (SiO2)

Quartzite

Quartzite (SiO2)

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Rutilated Quartz

Quartz (SiO2) with Rutile inclusions (TiO2)

Chert (often called Flint when dark)

Sedimentary cryptocrystalline quartz (SiO2)

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flinty variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Green variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint variety)

Chert (Cryptocrystalline Quartz, SiO2)

Jasper (Banded Argillite/Chert mix)

Silicon Dioxide (SiO2) with iron oxide inclusions