Aluminum Slag
Anthropogenic Aluminum (Al)
Category
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
Aluminum Slag
Anthropogenic Aluminum (Al)
Slag Glass
SiO2 (Silicon Dioxide) with impurities
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Blue glass-like tumbled specimen
Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
Rough Diamond
Native Carbon (C)
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
Sea Glass
Man-made silicate glass (Amorphous silicon dioxide)
Concrete Fragment
Artificial Conglomerate (Cement and Aggregate)
Diamond (in a gold ring)
Diamond (pure carbon, C)
Diamond
Carbon (C)
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Sandstone (Water-worn Cobble)
Arenite (SiO2 with CaCO3 or Fe2O3 cement)
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Dzi Bead (Etched Chalcedony)
Cryptocrystalline Quartz (SiO2) with chemical etching
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
Green Slag
Anthropogenic Silicate Glass
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
Tektite
Natural impact glass
Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
Bismuth Crystal
Bismuth (Bi)
Asphalt / Road Aggregate
Bituminous Conglomerate (synthetic)
Sea Glass (White/Clear)
Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO
Diamond (in a jewelry setting)
Diamond (Carbon, C)
Dalmatian Stone
Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Sea Glass
Amorphous silicon dioxide (Man-made glass weathered by nature)
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
Diamond (in a cluster setting)
Crystallized Carbon (C)
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Blue opalite (often sold as synthetic opal)
Opalite glass; amorphous hydrated silica if natural opal (SiO₂·nH₂O)
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)