Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)
Category
Metal (Elemental Mineral)
Browse metal (elemental mineral) specimens identified by the Rock Identifier community.
Emerald in Matrix
Beryl (Be3Al2Si6O18) containing Chromium/Vanadium impurities
mineral
Quartz Vein in Siltstone
SiO2 (Quartz) on clastic sedimentary matrix
sedimentary
Gold Nugget
Native Gold (Au)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Limonite and Goethite encrusted Quartz (Iron-stained Gossan)
FeO(OH)·nH2O (Limonite) / FeO(OH) (Goethite) on SiO2 (Quartz)
mineral
The user-provided image does not contain a rock or mineral specimen
N/A
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
mineral
Cream Marble (Speckled)
Metamorphosed Limestone (mainly CaCO3)
metamorphic
Native Copper
Native Copper (Cu)
mineral
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
mineral
Pallasite Meteorite (Sliced and Polished)
Pallasite (Iron-Nickel Matrix with Olivine crystals)
mineral
Sandstone (Quartzose)
Arenite (predominantly SiO2)
sedimentary
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within metamorphic/igneous matrix
igneous/metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock (Gabbro or Basalt)
Silicon Dioxide (SiO2) with Mafic Silicates
metamorphic/igneous
Green Slag Glass
Amorphous Silica Glass (Anthropogenic)
Industrial byproduct (often mistaken for obsidian or mineral)
Gold
Native Gold (Au)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Orange Calcite with Siderite/Iron Oxide Coating
Calcium Carbonate (CaCO3)
mineral
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Limonite and Goethite on Gossan
FeO(OH)·nH2O
mineral
Gold Nugget
Native Gold (Au)
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 inclusions)
sedimentary
Gold Ore in Quartz
Auriferous Quartz (Au + SiO2)
igneous
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Bismuth Crystal
Bismuth (Bi)
mineral
Iron Gossan (Limonite/Goethite)
Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones
sedimentary
Silver (Native Silver/Alloy Specimen)
Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Serpentinite
Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
metamorphic
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Gold Nugget
Native Gold (Au)
mineral
Native Copper
Native Copper (Cu)
mineral