Zircon
Zircon (ZrSiO4)
Mineral
Category
Metal (Elemental Mineral)
Browse metal (elemental mineral) specimens identified by the Rock Identifier community.
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Red Jasper (beads)
Silicon Dioxide (SiO2) with iron inclusions
Sedimentary Rock
Kunzite
Spodumene (LiAlSi2O6), variety Kunzite
Mineral
Corundum
Corundum (Al2O3)
Mineral
Gold Nugget
Native Gold (Au)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral
Black Obsidian and Hematite
Volcanic Glass (SiO2) and Hematite (Fe2O3)
igneous and mineral
Pyrite (on the right) and Magnetite or Hematite (on the left)
Iron Sulfide (FeS2) and Iron Oxide (Fe3O4 or Fe2O3)
mineral
Native Gold (in Jewelry)
Gold (Au)
mineral
Turquoise and Hematite
Turquoise: CuAl6(PO4)4(OH)8·4H2O; Hematite: Fe2O3
mineral
Sandstone
Arenite (SiO2 principal)
sedimentary
Quartz (various varieties)
SiO₂ (Silicon Dioxide)
Mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Hematite (Oolitic or Earthy variety)
Iron(III) oxide (Fe2O3)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
mineral-based human-made alloy
Pyrite Geode
Iron Disulfide (FeS2)
mineral
Silver (Native Element)
Silver (Ag) in an alloy of 90% Silver and 10% Copper
mineral
Pyrite (Fool's Gold) Ore
Iron Disulfide (FeS2)
mineral
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
mineral
Gold
Native Gold (Au)
mineral
Gold-bearing Quartz
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Gold Nugget
Native Gold (Au)
mineral
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Gold Nugget
Native Gold (Au)
mineral
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Gold in Matrix
Native Gold (Au)
mineral
Cupronickel (on a 1981 Mexico 20 Pesos coin)
Copper-Nickel Alloy (Cu75Ni25)
mineral
Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Sunstone
Oligoclase (Plagioclase Feldspar), (Na,Ca)(Si,Al)4O8
mineral
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
Mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
sedimentary
Limonite
Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)
mineral
Gold
Native Gold (Au)
Mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Sunstone
Plagioclase feldspar (with Copper or Hematite inclusions)
mineral
Moonstone with Black Tourmaline
Orthoclase (KAlSi3O8) with Schorl inclusions (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral