Serpentinite
Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4
metamorphic
Category
Mineral (Metal)
Browse mineral (metal) specimens identified by the Rock Identifier community.
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Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral with metamorphic or sedimentary host
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
metamorphic
Granite
Granite (Intrusive Igneous Rock)
igneous
Aura Quartz (Pink/Magenta Aura Quartz)
Silicon Dioxide (SiO2) treated with vapor-deposited precious metals
mineral
Gossan (Iron Hat)
Iron oxide-rich weathered rock (primarily Limonite and Goethite with secondary Quartz)
mineral
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
mineral
Granite
Intrusive Igneous Rock
igneous
Sandstone
Arenite (SiO2 primarily)
sedimentary
Gold Nugget
Native Gold (Au)
mineral
Manganese Nodule
Polymetallic Nodule (Hydrous manganese and iron oxides)
mineral
Amygdaloidal Basalt
Basalt with secondary mineral infilling
igneous
Green Schist
Greenschist (Chlorite Schist)
metamorphic
Beryl (Aquamarine)
Be3Al2Si6O18
mineral
Pyrite (on a metal substrate)
Iron Sulfide (FeS2)
mineral
Granite
Intrusive Igneous Rock
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite Pebble with Quartz Vein
Granite (Plutonic Igneous Rock) with Quartz (SiO2)
igneous
Quartz vein in metamorphic rock
Crystalline Silicon Dioxide (SiO2) in Host Rock
metamorphic
Quartz-rich metallic sulfide ore (probable pyrite-bearing rock)
Pyrite, FeS₂, in a quartz-rich host; exact identification is uncertain from the image
mineral
Aura Druzy Agate (Star Shape)
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating
mineral
Cubic Zirconia (as used in jewelry setting)
Zirconium dioxide (ZrO2)
mineral
Gossan (Iron Cap)
Limonitic Gossan (Fe2O3·nH2O mixed)
sedimentary
Bauxite
Bauxite (Al2O3·2H2O)
sedimentary
Gossan (Iron Hat)
Hydrous Iron Oxides (predominantly Goethite FeO(OH) and Limonite)
mineral
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
mineral
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Metallic iron meteorite (probable)
Iron meteorite, typically kamacite–taenite (Fe–Ni alloy)
meteorite
Rose Quartz and Lepidolite in Pegmatite
Crystalline Silicon Dioxide (SiO2) with Lithium-rich Mica (K(Li,Al)3(Al,Si)4O10(F,OH)2)
igneous
Gold
Native Gold (Au)
mineral
Quartz Vein in Siltstone
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
metamorphic
Quartz Vein in Host Rock (Likely Slate or Shale)
Hydrothermal Quartz (SiO2) in Pelitic host rock
metamorphic
Black Onyx
Chalcedony (SiO2)
gemstone
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Amethyst cabochon ring
Amethyst, purple quartz (SiO₂), colored primarily by iron-related defects and irradiation
gemstone
Ruby and Sapphire Cluster Ring
Corundum (Al2O3)
gemstone
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)
sedimentary
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Mineral alternative / Synthetic