Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Category
Browse mineral like (anthropogenic) specimens identified by the Rock Identifier community.
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Blue slag glass / industrial smelter slag
Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases
Iron-rich slag or weathered ironstone fragments
Probably hematite–goethite material; possibly industrial iron slag (Fe₂O₃/FeO(OH))
Possible basaltic volcanic rock or iron-rich meteorite
Likely basalt (plagioclase–pyroxene rock); meteorite status cannot be confirmed visually
Obsidian Arrowhead
Volcanic Glass (Primary composition: SiO2)
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
Slag (Industrial Glassy Byproduct)
Ferro-silicate Slag
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Asphalt (Bituminous pavement)
Bituminous concrete / Asphalt
Conglomeratic gravel / polymictic breccia
Polymictic rudite, likely anthropogenic or beach/stream gravel; composition varies
Blue Slag Glass
Man-made Silicon Dioxide (Amorphous)
Slag (Industrial Glass)
Artificial Vitreous Silicate
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Green Slag Glass
Amorphous Silicon Dioxide (with metallic impurities)
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
Iron-rich vesicular rock, possibly slag or weathered basalt
Identification uncertain; likely ferruginous basalt/ironstone, with possible anthropogenic iron slag
Asphalt Concrete (Bituminous Pavement)
Aggregates in Bitumen Matrix
South Korean 100 Won Coin (Cupronickel)
Cupronickel Alloy (75% Cu, 25% Ni)
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Slag
Metallurgical by-product
Slag Glass
Vitreous Silicate Residue
Efflorescence (on Clay Brick)
Crystalline salt deposits (typically Sodium Sulfate Na2SO4, Calcium Carbonate CaCO3, or Potassium Sulfate K2SO4)
Ferrous Slag
Fused calcium-iron silicates (Industrial Slag)
Ferro-Manganese Slag
Vitreous Silicate Slag
Iron Slag
Ferrous Slag (Industrial Byproduct)
Slag Glass
Amorphous Silica / Glass Slag
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
Cobalt Blue Sea Glass
Amorphous Silica Glass (SiO2 + CoO)
Iron Slag
Vitreous glassy waste (Fe-Si-Al-Ca compounds)
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Note: Item is not a geological specimen
Polyester mesh and Ethylene-vinyl acetate (EVA) polymer
Synthetic Zinc/Polycarbonate Composite (Bey-specimen)
Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay
Mixed beach-stone and tumbled-glass collection
Predominantly uncertain rocks (likely basalt, granite, and quartz-bearing stones) with anthropogenic glass; one possible banded agate or jasper
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Iron Slag
Ferrous Slag (Silicate/Oxide mixture)
Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides