Quartzite
Quartzite (primarily SiO2)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Quartzite
Quartzite (primarily SiO2)
Larvikite
Monzonite (intermediate intrusive igneous rock containing plagioclase, alkali feldspar, and minor dark minerals)
Auriferous Quartz (Gold-bearing Quartz)
Silicon Dioxide (SiO2) with Elemental Gold (Au)
Granite Cobble
Granitoid (typically containing Quartz SiO2, Feldspar KAlSi3O8, and Mica minerals)
Anthracite Coal
Anthracite (Carbon-based solid)
Okenite (in Zeolite matrix)
Okenite (CaSi2O5 · 2H2O)
Pink Quartzite
Quartzite (primarily SiO2)
Limestone Breccia
Sedimentary Breccia (Calcareous)
Pink Quartzite
Quartzite (primarily SiO2)
Quartzite (Iron-stained)
Quartzite (mostly SiO2 with Fe2O3 impurities)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Gold Nugget
Native Gold (Au)
Green Quartz (Prasiolite variant or Aventurine)
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Yellow Jasper
Cryptocrystalline quartz (SiO2) with iron inclusions
Fluorite
Calcium Fluoride (CaF2)
Amethyst
Amethyst (variety of Quartz, SiO2)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Blue Apatite
Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]
Pyrite
Iron Disulfide (FeS2)
Jasper with Quartz Veining
Silicon Dioxide (SiO2) with impurities
Pyrite
Iron Sulfide (FeS2)
Amethyst (Quartz)
Silicon Dioxide (SiO2)
Ruby
Corundum (Al2O3 with Chromium)
Limonite with Trace Fossils
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Carnelian (a variety of Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
Basalt Column Section
Columnar Basalt (Mafic Extrusive Igneous Rock)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rutilated Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions
Jasper
Jasper (Silicified microcrystalline quartz) - SiO2
Goethite (Iron Ore)
Goethite (FeO(OH))
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Hypersthene
Hypersthene (formula: (Mg,Fe)SiO3)
Tourmaline
Complex Borosilicate - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite species)
Hypersthene
Hypersthene (Enstatite variety), (Mg,Fe)SiO3
Schorl (Black Tourmaline) in Matrix
Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Almandine Garnet in Matrix
Almandine, Fe3Al2(SiO4)3
Coquina
Coquina (Bioclastic Limestone)