Sedimentary Rock (Possibly A Conglomerate Or Coarse Grained Sandstone)

Moqui Marbles

Iron Oxide Concretion (Hematite/Goethite)

Ferruginous Sandstone (Gozzanous)

SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating

Quartzite

Quartzite (SiO2)

Yellow Quartzite or Yellow Jasper

Quartzite (primarily SiO2 with Iron oxide staining)

Granite

Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O, Na2O)

Sandstone (with Iron Oxide staining)

Arenite (primarily SiO2 with Fe2O3 staining)

Quartzite

Quartzite (SiO2)

Ironstone Concretion / Limonite Node

Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O) with Goethite/Hematite

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

Quartz (River Siltstone Quartzite Pebble)

Silicon Dioxide (SiO2)

Quartzite (River Stone)

Quartzite (mainly SiO2 with iron oxide staining)

Sandstone Concretion

Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)

Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)

Quartz (SiO₂ - Silicon Dioxide)

Quartzite (Potentially Ferruginous)

Quartzite (SiO2)

Ironstone Concretion (Boji Stone/Moqui Marble type)

Goethite/Hematite-encrusted Sandstone Concretion

Sandstone (Ferruginous)

Arenite (Fe2O3 dominant staining)

Red Sandstone

Arenite (with Iron Oxide pigmentation)

Limestone

Calcium Carbonate (CaCO3)

Shale

Fissile Mudstone (Shale)

Blue Quartzite

Quartzite (primarily SiO2 with inclusions like Dumortierite or Magnesio-riebeckite)

Glauconitic Sandstone

Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Moqui Marble (Concretion)

Iron Oxide Concretion (Hematite/Goethite)

Quartzite Pebble (with Iron Inclusions)

Quartzite (primarily SiO2 with Fe2O3/FeOOH impurities)

Sandstone (Quartzite-rich River Cobble)

Clastic sedimentary rock (primarily SiO2)

Jasper

Silicon dioxide (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Orange Quartzite (or Iron-Stained Quartz)

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

Limestone with Calcite Veins

Sedimentary Calcium Carbonate (CaCO3)

Ironstone Concretion / Limonite-stained Siltstone

Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)

Dalmatian Jasper (Dalmatian Stone)

Peralkaline rhyolite

River Rock (Greywacke/Siltstone)

Siltstone / Argillaceous Greywacke

Wishing Stone (Basalt or Siltstone with Quartz/Calcite Vein)

Basalt (SiO2+MgO+FeO) or Siltstone with a Quartz (SiO2) or Calcite (CaCO3) vein

Quartz / Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Wishing Stone (Sandstone with Quartz Vein)

Arenite with Quartzite intrusion (SiO₂)

Wonderstone (Sandstone)

Silicified Quartz Sandstone with Iron Oxide staining

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with chromium-rich mica or chlorite inclusions)

Glauconitic Sandstone (Greensand)

Glauconitic Quartz Arenite (containing Glauconite, (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)

Shale

Shale (clastic sedimentary rock)

Tourmaline (likely Schorl)

Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4

River Quartzite (River Rock)

Quartzite (SiO2)

Painted River Pebble (likely Basalt or Greywacke)

Aphanitic Lithic Clast with Anthropogenic Pigment coating