Mineral, Often Found As Detrital Grains In Sedimentary Rocks

Quartzite

Quartzite (SiO2)

Jasper with Chert

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Dark-colored Igneous Rock (likely Basalt or Diabase)

Basalt (extrusive igneous) or Diabase (intrusive igneous)

Kyanite (Purple variety)

Kyanite (Al₂SiO₅)

Honey Calcite

Calcium Carbonate (CaCO3)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Green Kyanite

Kyanite (Al2SiO5)

Jasper

Quartz (SiO2) with impurities

Quartzite

Quartzite (SiO2)

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Quartzite

Quartzite (primarily SiO2)

Sandstone (Wonderstone)

Silicified Sandstone / Orthoquartzite with Liesegang rings

Hematite

Iron(III) oxide (Fe2O3)

Yellow Jasper / Chert

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Quartz Geode

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartz (Druzy/Macro-crystalline)

Silicon Dioxide (SiO2)

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Aquamarine

Beryl (Be3Al2Si6O18), specifically the blue-green variety

Pyrite

Iron Disulfide (FeS2)

Glauconitic Sandstone (Greensand)

Glauconitic Quartz Arenite (Formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Quartzite

Quartzite (primarily SiO2)

Quartz

Silicon Dioxide (SiO2)

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Granite (Dioritic or Hornblende-rich)

Phaneritic Plutonic Felsic to Intermediate Igneous Rock

Sandstone with Foliose Lichen

Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)

Petrified Wood

Silicified Wood (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2)

Red Sandstone

Arenite (predominantly Quartz with Hematite cementation)

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Chalcedony (Common Opal variant or Chert/Flint)

Silicon Dioxide (SiO2)

Chert (Field Stone)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ferruginous Sandstone (Ironstone)

Arenite with Limonite/Goethite cement

Banded Agate (Orca Agate)

Silicon Dioxide (SiO2) - Chalcedony variety

Granite (specifically Rapakivi Granite)

Phaneritic Felsic Igneous Rock (Granite)

Red Sandstone

Arenite (Ferruginous Sandstone)

Red Granite

Felsic Intrusive Igneous Rock

Quartzite

Metamorphic Quartzite (SiO2)

Granite

Granite (felsic intrusive igneous rock)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (chiefly SiO2)