Mineral (Man Enhanced)

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Arenite

Sandstone (Red/Brown Variety)

Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)

Sandstone

Arenite (primarily SiO2, silica)

Jasper (likely Ocean Jasper or Variegated Jasper)

Silicon Dioxide (SiO2) with impurities

Amygdaloidal Rhyolite

Amygdaloidal Rhyolite (Felsic volcanic rock)

Chiastolite (Andalusite)

Al2SiO5

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

Vesicular Basalt (Scoria)

Extrusive Mafic Volcanic Rock (FeO-SiO2-MgO)

Sandstone (specifically Red Sandstone)

Arenite (SiO2 with Iron Oxide)

Sandstone

Arenite (primarily SiO2)

Sandstone (Micaceous/Feldspathic variant)

Arenite (specifically subarkose or lithic arenite)

Septarian Nodule (Thunder Egg)

Septarian Concretion (CaCO3 + CaMg(CO3)2 + SiO2)

Sandstone

Arenite (Siliclastic sedimentary rock), SiO2 + various minerals

Sandstone

Arenite

Sandstone (specifically Arkose or Ferruginous Sandstone)

Sandstone (SiO2 with iron oxide inclusions)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Sandstone (specifically Arkose or Quartz Arenite)

Arenite (primarily SiO2 with possible Feldspar)

Sandstone (Red Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Desert Rose

Selenite Rose (Gypsum: CaSO4·2H2O)

Sandstone

Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)

Picture Jasper

Silicon Dioxide (SiO2) with impurities

Jasper with Iron Staining

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Map Jasper (Picasso Stone)

Metamorphosed Calcium Carbonate (Crystalline Limestone or Marble with Silicate inclusions/impurities)

Sandstone (Banded Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)

Red Sandstone

Arenite (predominantly SiO2 with Fe2O3)

Sandstone

Arenite (primarily SiO2)

Tree Agate

Silicon Dioxide (SiO2) - Dendritic Agate/Chalcedony

Quartzite (Iron-stained)

Quartzite (primarily SiO2)

Tree Agate

Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions

Desert Varnish on Sandstone

Ferromanganese coating on Quartz Arenite

Jasper (specifically Picture Jasper or Landscape Jasper)

Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz

Petrified Wood

Silicified Wood (SiO2)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Chert Pebble (Jasper/Quartz variety)

Microcrystalline Quartz (SiO2)

Red Sandstone (Old Red Sandstone)

Ferruginous Sandstone (SiO2 + Fe2O3)

Sea Glass (specifically Frosted White)

Amorphous Silica (substance: Sodium-calcium silicate glass)

Agate (Moss or Banded Agate variety)

Agate (Silicon Dioxide - SiO2)

Corundum (Sapphire/Ruby in Matrix)

Aluminium oxide (Al2O3)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Bornite (Peacock Ore)

Bornite (Cu5FeS4)