Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Category
Mineral (Metal)
Browse mineral (metal) specimens identified by the Rock Identifier community.
Learn about Mineral (Metal) in the encyclopedia
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Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
mineral (refined metal)
Native Silver
Silver (elemental Ag)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pallasite Meteorite
Pallasite (Stony-iron meteorite; Fe-Ni alloy with (Mg,Fe)2SiO4 olivine)
Mineral/Extraterrestrial Rock
Schist (Diamond Drill Core)
Mica Schist
metamorphic
Bismuth Crystal
Bismuth (Bi)
mineral
Copper Ore (Malachite/Chrysocolla bearing)
Cupriferous rock containing secondary copper minerals like Cu2CO3(OH)2
mineral
Aura Quartz (Titanium/Gold coated)
Silicon Dioxide (SiO2) with metallic vapor deposition
mineral
Bauxite
Bauxite (mixture of hydrous aluminum oxides: Al(OH)3 & AlO(OH))
sedimentary
Slag (Industrial Glassy Byproduct)
Ferro-silicate Slag
Anthropogenic / Non-Natural
Amethyst
Quartz (Silicon Dioxide, SiO2)
gemstone
Silver (Jewelry Specimen)
Native Silver (Chemical Formula: Ag)
mineral
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact
Galena in Quartz Matrix
Lead Sulfide (PbS) in Silicon Dioxide (SiO2)
mineral
Granite
Plutonic Igneous Rock
igneous
Gabbro (likely with Pyrite/Sulfide mineralization)
Mafic Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Granite
Intrusive Igneous Rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Slag (Industrial By-product)
Anthropogenic Vitreous Silica/Iron Silicate
mineral
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock (Felsic)
igneous
Granite
Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)
igneous
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
igneous (artificial/anthropogenic)
Silver (Native Element)
Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen
mineral
Copper Ore with Chalcocite
Copper sulfide (Cu2S) with associated copper-bearing minerals
mineral
Chalcopyrite (or Pyrite Ore)
CuFeS2 (Copper Iron Sulfide)
mineral
Granite
Intrusive Igneous Rock
igneous
Ring with an Orange Inlay
N/A (Man-made object)
Man-made Object (Ring)
Pyrite
Iron Disulfide (FeS2)
mineral
Granite
Intrusive Igneous Rock
igneous
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Metal Alloy (Jewelry)
Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.
Man-made Material (jewelry, metal alloy)
Iron meteorite fragment
Fe-Ni meteorite, likely an iron meteorite or stony-iron fragment
meteorite
Serpentine
(Mg,Fe)3Si2O5(OH)4
metamorphic
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Beaded gemstone bracelet
Indeterminate; likely small polished mineral beads, possibly turquoise or dyed stone, with metal and glass components
gemstone