Malachite pendant
Malachite, Cu₂CO₃(OH)₂
mineral
Category
Mineral (Metal)
Browse mineral (metal) specimens identified by the Rock Identifier community.
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Galena-rich sulfide specimen
Galena (lead sulfide, PbS), possibly with sphalerite or other sulfides
mineral
Native silver (likely)
Silver, Ag; possibly silver-bearing sulfide or mica contamination
mineral
Ruby and Sapphire Cluster Ring
Corundum (Al2O3)
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Olivine (Peridot Stone)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Black Onyx
Chalcedony (SiO2)
gemstone
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Sandstone
Arenite (SiO2 primarily)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Pallasite Meteorite (likely Imilac or Brenham)
Stony-Iron Meteorite (Pallasite)
mineral
Gold Nugget
Native Gold (Au)
mineral
Garnet-set butterfly brooch
Likely almandine or pyrope garnet, iron–aluminum silicate (Fe₃Al₂Si₃O₁₂ or Mg₃Al₂Si₃O₁₂)
gemstone
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
metamorphic
Amethyst cabochon ring
Amethyst, purple quartz (SiO₂), colored primarily by iron-related defects and irradiation
gemstone
Cubic Zirconia (as used in jewelry setting)
Zirconium dioxide (ZrO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Native silver fragment (probable)
Silver, Ag; possibly silver-bearing sulfide or plated metal
mineral
Quartz-rich metallic sulfide ore (probable pyrite-bearing rock)
Pyrite, FeS₂, in a quartz-rich host; exact identification is uncertain from the image
mineral
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Silver (Native or Alloyed)
Ag (Argentum)
mineral
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
Quartz-bearing pyrite–chalcopyrite specimen
Pyrite (FeS₂), likely chalcopyrite (CuFeS₂), with quartz (SiO₂)
mineral
Greenstone or Chlorite Schist
Greenschist / Chlorite schist
metamorphic
Manganese Nodule
Polymetallic Nodule (Hydrous manganese and iron oxides)
mineral
Beryl (Aquamarine)
Be3Al2Si6O18
mineral
Gold Flakes
Native Gold (Au)
mineral
Gold Flake
Native Gold (Au)
mineral
Copper Nugget
Native Copper (Cu)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Small faceted gemstone, likely diamond
Diamond (crystalline carbon, C)
gemstone
Gossan (Iron Cap)
Limonitic Gossan (Fe2O3·nH2O mixed)
sedimentary
Gossan (Iron Hat)
Hydrous Iron Oxides (predominantly Goethite FeO(OH) and Limonite)
mineral
Sphalerite in Chalcedony (Crescent Carving)
Zinc Sulfide (ZnS) with Silicon Dioxide (SiO2)
mineral
Red Sandstone
Quartz Arenite (with Iron Oxide)
sedimentary
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
mineral