Ferruginous Slag (Iron Smelting Byproduct)
Fused Silicate Scoria (Amorphous mixture of FeO, SiO2, and CaO)
Antropogenic Glass / Mineraloid
Category
Antropogenic Glass
Browse antropogenic glass specimens identified by the Rock Identifier community.
Learn about Antropogenic Glass in the encyclopedia
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Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Antropogenic (Man-made)
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Antropogenic rock (Man-made)
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Antropogenic (Man-made glass byproduct)
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Antropogenic (Man-made material)
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Antropogenic (Man-made industrial byproduct)
Green Sea Glass
Man-made vitreous material (silica glass)
gemstone
Cullet Glass (Industrial Slag Glass)
Amorphous Silica (SiO2) with metallic oxide impurities
Man-made byproduct (often mistaken for Obsidian or Emerald)
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
mineral
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Opalite
Synthetic glass / Opalized glass
gemstone
Green glassy slag or manufactured glass bead
Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral
mineral
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
not a rock (man-made origin)
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
mineral
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Opalite
Man-made Opalized Glass (Synthetic Glass)
gemstone
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Slag Glass
SiO2 (Silicon Dioxide) with impurities
man-made glass
Chipped Glass/Plastic Fragment
Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic
Man-made material (simulant/artifact)
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various additives
Man-made material (Anthropogenic 'mineraloid')
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities
mineraloid
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Sea Glass (Frosted Glass Fragment)
Amorphous Silica (Anthropogenic Sediment)
sedimentary
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
man-made material
Sea Glass (Frosted Quartz/Glass)
Amorphous Silicon Dioxide (SiO2)
Mineraloid
Sea Glass
Man-made silicate glass weathering product
sedimentary
Cobalt Glass Slug (Cullet)
Man-made Silicate Glass with Cobalt Oxide (CoO)
mineraloid
Goldstone (aventurine glass)
Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone
gemstone
Goldstone (Brown)
Aventurine glass
mineraloid (man-made)
Green Glass Cullet / Recycled Glass
Amorphous Silicon Dioxide (SiO2) with various metal oxides
Man-made Glass (Not a natural rock or mineral)
Likely blue glass or synthetic gemstone jewelry
Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass
gemstone
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Byproduct)
mineraloid
Libyan Desert Glass
Libyan Desert Glass (Impactite)
meteorite
Sea Glass
Man-made silicate glass
sedimentary
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Snowflake Obsidian
Spherulitic Obsidian (Amorphous volcanic glass with Phenocrysts of Cristobalite)
igneous