This Is Not A Rock Or Mineral

Sandstone (with potential trace fossils)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (Iron-stained)

Clastic sedimentary rock (SiO2 with Fe2O3 staining)

Sandstone

Sandstone (clastic sedimentary rock), primarily SiO2

Sandstone

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz - SiO2)

Geode Nodules / Chalcedony Geode

Silicon Dioxide (SiO2) - Amorphous to Cryptocrystalline Quartz

Sandstone

Arenite (composed primarily of Quartz: SiO2)

Sandstone

Arenite (primarily Quartz, SiO2)

Dalmatian Stone (Dalmation Jasper)

Aplite with Arfvedsonite inclusions

Quartz Pebble (River Rock)

Silicon Dioxide (SiO₂)

Sandstone (Greywacke/Lithic Sandstone)

Arenite (composed primarily of SiO2)

Heliotrope (Bloodstone)

Silicon dioxide (SiO2) with inclusions

Shale

Fissile Mudrock (Clay-rich Sedimentary Rock)

Wishing Stone (Basalt with Quartz Vein)

Basalt containing a microcrystalline quartz (SiO2) or calcite vein

Ferruginous Sandstone (Gritstone)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3 and FeO(OH))

River Quartzite Siltstone

Quartz-rich Meta-siltstone (SiO2 dominated)

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

Porphyritic Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Red Jasper (Brecciated Jasper)

SiO2 (Silicon Dioxide) with Ferric Iron inclusions

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Jasper with Hematite inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Laterite

Laterite (Ferricrete)

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Granite

Phaneritic Felsic Igneous Rock

Chert (Jasper/Flint Pebble)

Microcrystalline quartz (SiO2)

Rock Salt (Halite)

Halite (Sodium Chloride, NaCl)

Pink Granite (with Potassic Feldspar and Quartz)

Felsic Intrusive Igneous Rock (Granite)

Mica Schist

Crystalline Schist (often containing Muscovite, Biotite, and Quartz)

Sandstone

Arenite (SiO2 based)

Rough Star Sapphire (Corundum)

Al2O3 (Aluminum Oxide)

Lapis Lazuli

Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Granite

Phaneritic Plutonic Felsic Rock (Granite)

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

Red Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)

Red Sandstone

Arenite (with Iron Oxide)

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Silicon Dioxide (SiO2)