Gold Flake (Placer Gold)
Native Gold (Au)
Category
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
Gold Flake (Placer Gold)
Native Gold (Au)
Magnetite
Magnetite (Fe3O4)
Hematite
Iron(III) oxide (Fe2O3)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Specular Hematite and Magnetite Ore
Iron Oxide (Fe2O3 and Fe3O4)
Nobby Hematite (Iron Ore)
Hematite (Fe2O3)
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
Gold Ore in Quartz/Matrix
Native Gold (Au) in Quartz (SiO2) matrix
Limonite (Ironstone Concretion)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
Hematite
Iron(III) oxide (Fe2O3)
Pyrite in Shale
Iron Disulfide (FeS2)
Galena
Lead(II) sulfide (PbS)
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Hematite
Iron(III) oxide (Fe2O3)
Pyrite
Iron Sulfide (FeS2)
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
Hematite
Iron(III) oxide (Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz with Mica (Gneiss/Schist influence)
Silicon Dioxide (SiO2) with Phyllosilicates
Limonite Pseudomorph after Pyrite
Limonite (Hydrous iron oxides e.g., FeO(OH)·nH2O) pseudomorphing Pyrite (FeS2)
Tiger's Eye (with Hematite/Jasper)
SiO2 (Silicon Dioxide) with Fe2O3 (Hematite)
Milky Quartz
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Fluorite, Turquoise, and Calcite set
Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)
Garnet Schist
Almandine-Mica Schist
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 - Muscovite component)
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium fluoride (CaF2)
Green Fluorite
Calcium Fluoride (CaF2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Graphite
Graphite (Native Carbon), Formula: C
Ironstone Concretion (Moqui Marble type)
Iron oxide concretion (Goethite/Hematite and Sandstone)
Labradorite (Larvikite variety)
Feldspar (Plagioclase series), (Na,Ca)(Si,Al)4O8
Rainbow Fluorite
Calcium Fluoride (CaF2)