Sedimentary Rock

Coarse-grained Jasper or Jasper Conglomerate

Silicon Dioxide with Iron Oxide (SiO2) + Fe2O3

Ferruginous Breccia

Breccia with Iron-rich (Hematite/Goethite) Matrix

Glacial Erratic (Sandstone/Quartzite)

Glacial Erratic specimen (likely Orthoquartzite or Feldspathic Sandstone)

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2)

Sandstone (Wonderstone)

Silicified Sandstone / Orthoquartzite with Liesegang rings

Bloodstone

Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)

Red Sandstone

Sandstone (mainly SiO2 with Iron Oxide cement)

Sandstone (specifically Picture Sandstone or Wonderstone)

Arenite (composed primarily of SiO2)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartzite

Quartzite (primarily SiO2)

Banded Iron Formation

Banded Iron Formation (BIF)

Conglomerate

Conglomerate (lithified rudite)

Dolomite or Limestone (Carbonate Rock)

CaMg(CO3)2 (Dolomite) or CaCO3 (Limestone / Calcite)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Grooved Maun Ball (Maul/Hammerstone-like Concretion)

Calcareous/Ferruginous Concretion in Sandstone Matrix

Chert (Arrowhead or Projectile Point)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O

Halite

Halite (Sodium Chloride, NaCl)

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Pebble)

Microcrystalline silica (SiO2)

Coquina

Bioclastic Limestone

Fossiliferous Limestone (Coquina / Shell Conglomerate)

Bioclastic Limestone (composed primarily of CaCO3)

Oolitic Limestone

Oolitic Carbonate (CaCO3)

Gneiss (with Quartz and Biotite Mica)

Gneiss

Barite Rose (Desert Rose)

Barium Sulfate (BaSO4)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Agate (Carnelian-Blue Agate mix)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Amethyst Geode

Silicon Dioxide with trace inclusions of Iron (SiO2)

Jasper and Quartzite Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Carnelian (a variety of Chalcedony)

Cryptocrystalline Quartz (SiO2) with iron oxide inclusions

Blue Chalcedony

Silicon Dioxide (SiO2)

Breccia

Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)

Turquoise

Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Green Jasper (Heliotrope / Bloodstone variety)

Silicon Dioxide (SiO₂)

Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz)

Silicon Dioxide (SiO2) with iron inclusions

Quartz (Milky/Smoky variety on matrix)

Silicon Dioxide (SiO2)

Garnet Schist

Almandine Garnet-Mica Schist (X₃Y₂(SiO₄)₃)