Gold
Aurum (Au)
Mineral (Metal)
Category
Mineral (Processed Alloy)
Browse mineral (processed alloy) specimens identified by the Rock Identifier community.
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Arsenic (Native)
Arsenic (As)
mineral
Copper
Native Copper (Cu)
mineral
Silicon
Silicon (Si)
mineral
Arsenopyrite
Arsenopyrite (FeAsS)
mineral
Gold Nugget
Native Gold (Au)
mineral
Dyed Howlite (simulating Lavender/Purple Jade or Charoite)
Howlite: Ca2B5SiO9(OH)5 (when natural)
Mineral
Arsenopyrite in Sulphide Ore
Arsenopyrite (FeAsS)
mineral
Red Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Granite
Granite
igneous
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Native copper nugget
Native copper (Cu)
mineral
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Bismuth
Bismuth (element Bi) with oxidized thin-film interference layer
mineral
Aquamarine (Pale variety)
Beryl (Be3Al2Si6O18)
mineral
Silicon
Crystalline Silicon (Si)
mineral
Michigan Float Copper
Native Copper (Cu)
mineral
Native copper nugget
Copper (Cu), commonly with cuprite and copper-oxide alteration
mineral
Slate
Foliated Metamorphic Slate
metamorphic
Slate
Foliated Metamorphic Rock (primarily composed of Muscovite, Chlorite, and Quartz)
metamorphic
Copper-Bearing Sulfide Ore (likely Chalcopyrite or Bornite)
Chalcopyrite (CuFeS2) or Bornite (Cu5FeS4) in host rock
mineral
Gold Nugget
Native Gold (Au)
mineral
Chrysocolla
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Iron Meteorite
Meteoritic Iron (Fe-Ni alloy)
meteorite
Likely galena-bearing ore
Galena (lead sulfide, PbS), possibly with quartz or calcite gangue
mineral
Silicon (Industrial Grade)
Elemental Silicon (Si)
mineral
Native Copper
Native Copper (Cu)
mineral
Iron Meteorite
Siderite (meteoritic iron, Fe-Ni alloy)
mineral
Blue Celestite
Celestine (Strontium Sulfate, SrSO4)
mineral
Psilomelane (Manganese Ore)
Psilomelane (Ba,H2O)2Mn5O10
mineral
Iron Meteorite (Candidate)
Iron Meteorite (Siderite)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Copper Ore (likely Chalcopyrite in Matrix)
Chalcopyrite (CuFeS2)
mineral
Sandstone (Red Flagstone)
Clastic sedimentary rock (primarily Quartz - SiO2)
sedimentary
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Gold Nuggests
Native Gold (Au)
mineral
Iron Meteorite
Iron-nickel alloy (primarily kamacite and taenite)
Mineral/Rock (Extraterrestrial Origin)
Cubic Zirconia (CZ) in Gold-Plated Setting
Cubic Zirconium Dioxide (ZrO2)
mineral
Diorite (Salt and Pepper Rock)
Phaneritic Plutonic Diorite; chemical composition roughly 52-63% silica (SiO2)
igneous