Sandstone (Quartzose)
Arenite (SiO2 based)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Sandstone (Quartzose)
Arenite (SiO2 based)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Quartzite
Quartzite (primarily SiO2)
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxides
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Bauxite
Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)
Muscovite (White Mica)
Muscovite - Potassium aluminum silicate: KAl2(AlSi3O10)(F,OH)2
Quartz
Silicon Dioxide (SiO2)
Sandstone (with Iron Staining)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) oxides)
Carnelian Agate
Chalcedony (SiO2 with iron oxide impurities)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
Blue Quartzite
Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)
Red Quartz (Druzy)
Silicon Dioxide (SiO2) with Hematite inclusions
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
Emerald / Green Beryl
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Natural Gold Nugget
Native Gold (Au)
Gold flakes
Native Gold (Au)
Amazonite
Potassium Feldspar (Microcline) - KAlSi3O8
Moss Agate
Agate (Silicon Dioxide, SiO2) with dendritic inclusions
Obsidian
Volcanic Glass (Amorphous Silica)
Dyed Agate
SiO2
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
Lapis Lazuli
Lapis lazuli (a metamorphic rock primarily composed of Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Carnelian
Carnelian (SiO2, Silicon Dioxide with Iron Oxide impurities)
Rock Crystal Quartz
Quartz (SiO₂)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Carnelian
Carnelian (SiO2 with Fe2O3 impurities)
Pink Quartzite
Quartzite (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (specifically Milky or Rose Quartz variant)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Malachite
Copper carbonate hydroxide, Cu2CO3(OH)2
Quartzite
Quartzite (SiO2 principal component)
Quartzite
Quartzite (SiO2 silicon dioxide)
Quartzite
Quartzite (primarily SiO2)
Basalt
Basalt (comprising plagioclase, pyroxene, and olivine)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Quartzite
Quartzite (primarily SiO2)
Clear Quartz
Silicon Dioxide (SiO2)