Mineral On Sedimentary

Sandstone

Arenite

Sandstone (Ferruginous)

Arenite with Iron Oxide matrix

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz with Fe2O3 staining)

Sandstone (likely Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Manganese Oxide Crust on Limestone

Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3

Rhodochrosite

Manganese carbonate (MnCO3)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Greywacke)

Arenite / Clastic Sedimentary Rock

Quartz (Citrine or Iron-Stained)

Silicon Dioxide (SiO2)

Sandstone concretion (Ironstone-stained)

Arenite with Limonite/Hematite staining (Silica-based with Iron Oxides)

Sandstone (Water-worn Cobble)

Arenite (SiO2 based)

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Geode in Sedimentary Matrix

Silicon Dioxide (SiO2) within a limestone/dolostone host

Sandstone (Ferruginous)

Arenite (Fe2O3 enriched)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Bauxite

Al2O3·2H2O (principally composed of gibbsite, boehmite, and diaspore)

Sandstone with Foliose Lichen

Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

Kaolinite (Chalky Clay)

Kaolinite (Al2Si2O5(OH)4)

Fossilized Shark Tooth (Otodus obliquus)

Otodus obliquus (Mineral composition: Bio-apatite/Calcium Phosphate replaced by various minerals)

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone with Iron Oxide

Arenite (SiO2 with Fe2O3 staining)

Sandstone (Quartzite Pebble)

Arenite (primarily SiO2)

Sandstone (likely Graywacke or Arkosic varieties)

Arenite (composed primarily of SiO2)

Banded Chert

Cryptocrystalline Quartz (SiO2)

Quartz on Host Rock

Silicon Dioxide (SiO2)

Sandstone (Quartzite-rich River Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone (likely Fossiliferous Sandstone)

Clastic sedimentary rock (primarily SiO2)

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)

Sandstone

Arenite (SiO2 based)

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Ferruginous Sandstone (Gozzan)

Iron-rich clastic sedimentary rock with Limonite/Goethite

Limonite (Ironstone)

Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Turquoise

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

Yellow Calcite

Calcium Carbonate (CaCO3)

Limonite (with Pyrite)

Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Emerald

Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium