Mineral, Often Found As Detrital Grains In Sedimentary Rocks

Ironstone Concretion (Moqui Marble type)

Ferruginous Concretion (Fe2O3 / FeO(OH))

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (primarily SiO2 with various cementing agents)

Sandstone (with Iron Oxidation)

Arenite (SiO2 with Fe-oxides)

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Sandstone

Arenite (SiO2 based)

Sandstone (lithic/arkosic)

Clastic sedimentary rock (primarily SiO2)

Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)

Silicified limestone or banded sedimentary rock with mineral veins

Sandstone

Arenite (composed primarily of SiO2)

Granite Gneiss

Gneiss (containing quartz, alkali feldspar, plagioclase, biotite/amphibole)

Green Calcite

Calcium Carbonate (CaCO3)

Sandstone (Weathered Pebble)

Sedimentary Rock (Quartz arenite)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (SiO2 based)

Sandstone (Red Flagstone)

Clastic sedimentary rock (primarily Quartz - SiO2)

Mica Schist

Mica Schist (primarily Muscovite and Biotite composition)

White Marble

Calcite-rich Metasomatized Carbonate (CaCO3)

Yellow Chalcedony / Carnelian

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 principal component)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartzite

Quartzite (composed primarily of SiO2)

Sandstone (Pebble)

Sandstone (SiO2 dominated with minor feldspar/clay)

Sandstone (likely Quartzose Sandstone)

Arenite (SiO2 predominantly)

Red Sandstone

Clastic sedimentary rock (primarily Quartz with Hematite)

Sandstone

Arenite

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Sandstone (with garnet granules)

Clastic sedimentary rock (primarily SiO2 with Fe3Al2(SiO4)3 inclusions)

Ironstone Concretion

Ironstone (Limonite/Goethite/Hematite mixture)

Quartzite

Quartzite (SiO2)

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Pyrite

Iron Sulfide (FeS2)

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains)

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (mainly SiO2 with varying cements)

Schist

Mica Schist (Variable chemistry, often rich in muscovite and biotite)

Sandstone

Arenite

Sandstone (with secondary weathering/concretion)

Arenite (composed primarily of Quartz, SiO2)

Granitic Pegmatite

Pegmatitic Granite

Sandstone

Arenite (primarily SiO2)