Mineral, Often Found As A Rock

Sandstone

Arenite (composed primarily of SiO2)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite

Sandstone (Quartzose)

Arenite (primarily SiO2)

Basalt with Quartz Vein

Basalt (SiO2 vein inclusion)

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Yellow Jasper (Limonite-stained Chert)

Silicon Dioxide (SiO2) with Limonite/Goethite inclusions

Quartzite

Quartzite (primarily SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Granite

Granite (Mainly Quartz SiO2 and Feldspar KAlSi3O8)

Sulfide Ore (likely Galena and Sphalerite in Quartz)

Lead-Zinc Ore (PbS and ZnS)

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)

Chert (and Limestone)

Chert (consisting of Microcrystalline Quartz, SiO2)

Quartz Vein on Matrix

Silicon Dioxide (SiO2)

Sandstone Pebbles

Arenite (Sedimentary rock composed of sand-sized grains)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Schist

Mica Schist

Gneiss (specifically a Banded Gneiss cobble)

Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)

Dalmatian Stone (commonly Dyed)

Dalmatian Jasper (Peralkaline igneous rock)

Grey Agate (Tumbled)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone)

Clastic Terrigenous Sedimentary Rock (primarily SiO2)

Chert (Nodular or Fossiliferous)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone (Greywacke/Siltstone variant)

Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)

Sandstone

Arenite (primarily SiO2)

Glauconitic Sandstone (Greensand)

Glauconitic Quartz Arenite (containing Glauconite, (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)

Turquoise

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

Jasper

Jasper (Cryptocrystalline variety of Quartz, SiO2)

Geode with Quartz/Chalcedony

Silicon Dioxide (SiO2)

Granite

Phaneritic Felsic Igneous Rock

Granite

Phaneritic plutonic felsic rock (primarily Quartz, Feldspar, and Mica)

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2) with limonite/hematite staining

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Arenite

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Dendritic Agate

Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Banded Sandstone (Liesegang Rings)

Sedimentary Arenite (SiO2 with FeO/Fe2O3 impurities)

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with Fe2O3 cement)

Basalt

Extrusive mafic igneous rock

Sandstone with Manganese Dendrites/Oxide coatings

Arenite with Pyrolusite and Romanechite (MnO2)