Sedimentary Rock (Possibly A Conglomerate Or Coarse Grained Sandstone)

Granite

Phaneritic high-silica plutonic rock (composed primarily of Quartz, Feldspar, and Mica)

River Rock (likely Quartzite or Quartz-rich Siltstone)

Quartzite (SiO2)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Sandstone

Arenite (primarily SiO2)

Orange Quartzite (with Iron Staining)

Quartzite (SiO2)

Mica Schist

Mica Schist (primarily Muscovite and Biotite phyllosilicates)

Sandstone Geode (Unbroken)

Siliciclastic sedimentary rock (primarily Quartz)

Shale

Argillaceous Rock

Quartzite (Iron-stained)

Metamorphosed Quartz-rich Rock (SiO2)

Quartzite

Quartzite (Primary mineral: SiO2)

Shale

Fissile Mudstone (primarily composed of clay minerals and quartz)

Granite (Pink/Potassium Feldspar Granite)

Felsic Plutonic Rock (Potassium Feldspar, Quartz, Mica, and Amphibole)

Ferruginous Sandstone

Sandstone with iron oxide (Hematite/Limonite) cement

Quartzite

Quartzite (primarily SiO2)

Glauconitic Sandstone

Glauconitic arenite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

Sandstone with Algae Growth

Arenite with Chlorophyta/Lichen

Quartzite (Iron-stained)

Quartzite (primarily SiO2)

Diorite (Salt and Pepper Rock)

Diorite

Coquina Limestone (Fossiliferous Limestone)

Calcareous bioclastic sedimentary rock (CaCO3)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Granite

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

Granite

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

Red Granite

Phaneritic Felsic Intrusive Igneous Rock (primarily K-feldspar, Quartz, and Biotite)

Granite

Phaneritic Intrusive Igneous Rock (primarily composed of SiO2, Al2O3, K2O, Na2O)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)

Red Quartzite Cobble

Quartzite (primarily SiO2)

Quartz Druze (Crystalline Quartz)

Silicon Dioxide (SiO2)

Diorite (Salt and Pepper Rock)

Diorite

Gneiss (Metamorphic Cobble)

Gneiss

Ironstone Concretion (Limonite/Goethite)

Goethite-rich Concretion (FeO(OH))

Quartzite

Quartzite (SiO2)

Quartzite Pebbles (River Stones)

Quartzite (primarily Silicon Dioxide, SiO2)

Brecciated Jasper

Silicon Dioxide (SiO2) with varying mineral inclusions (Iron Oxide, Hematite, Clay)

Sandstone (with Manganese staining)

Arenite (composed primarily of SiO2)

Sandy Ironstone

Ferruginous Sandstone

Quartzite

Quartzite (primarily SiO2)

Green Quartzite (or Aventurine)

SiO2 (Silicon Dioxide) primarily, with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)

Grey Limestone Pebble

Limestone (Calcium Carbonate - CaCO3)

Granite

Granite (silica-rich intrusive igneous rock)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)