Sedimentary (Secondary Mineral Formation)

Rhodochrosite

Manganese carbonate (MnCO3)

Turquoise

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

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Rhodolite Garnet

Magnesium Aluminum Silicate; formula: (Mg,Fe)3Al2(SiO4)3

Ferruginous Sandstone (Gozzan)

Iron-rich clastic sedimentary rock with Limonite/Goethite

Blue Celestite (with Galena)

Strontium sulfate (SrSO4) and Lead sulfide (PbS)

Agate

Silicon Dioxide / Cryptocrystalline Quartz (SiO2)

Chert (with Quartz vein/coating)

Microcrystalline Quartz (SiO2)

Yellow Jasper

Silicon dioxide (SiO2)

Hematite

Hematite (Fe2O3)

Sandstone with Manganese Dendrites/Oxide coatings

Arenite with Pyrolusite and Romanechite (MnO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Geode (Quartz)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Banded Sandstone (River Pebble)

Clastic Sedimentary Rock (primarily Quartzite and Feldspar grains)

Red Sandstone

Arenite (Fe2O3-rich)

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Turquoise

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

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)

Asphalt (Bituminous Pavement)

Bituminous mix (Aggregates with Bitumen binder)

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions

Travertine (Tufa)

Terrestrial Sedimentary Limestone (CaCO3)

Jasper (Zebra Jasper)

Silicon Dioxide (SiO2) with impurities

Chert Pebble with Quartz Veining

Microcrystalline Quartz (SiO2)

Sandstone with Quartz Veining

Clastic sedimentary rock (SiO2 dominated)

Quartz Geode

Silicon Dioxide (SiO2) within a secondary sedimentary structure

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Sandstone (Pebble)

Arenite (primarily SiO2)

Agate Geode

Silicon Dioxide (SiO2) - Banded Chalcedony

Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone (with Limonite staining)

Arenite (FeOx-rich)

Blue Calcite

Calcium Carbonate (CaCO3)

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Banded Agate (Yellow/Honey Agate)

Agate (Cryptocrystalline Quartz, SiO2)

Chalcedony (specifically Agate or Common Opal variety)

Cryptocrystalline Silica (SiO2)

Chalcedony (Botryoidal/Drusy Quartz)

Silicon Dioxide (SiO₂)