Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
Category
Browse man made glass specimens identified by the Rock Identifier community.
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
Concrete Fragment
Hardened Portland cement and mineral aggregate
Opalite
Synthetic Opalised Glass
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Opalite
Synthetic Opalized Glass
Opalite
Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Aura Quartz (Rainbow Quartz)
Silicon Dioxide (SiO2) with metallic vapor coatings
Blue Goldstone
Synthetic Avanturine Glass (or Aventurine Glass)
Asphalt Concrete
Bituminous conglomerate
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Ring with an Orange Inlay
N/A (Man-made object)
Mystic Topaz (Treated Quartz or Topaz)
Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating
Sandstone Concretion
Limonitic Sandstone Concretion
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
Opalite
Synthetic glass (SiO2 + metal additions)
Opalite
Synthetic Opalised Glass
Asphalt (Road Aggregate)
Bituminous conglomerate
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
Cullet (Slag Glass)
Amorphous Silica (Industrial byproduct)
Chert Concretion
Chert (Microcrystalline Quartz, SiO2)
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Concrete
Anthropogenic Conglomerate
Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Unidentifiable Rock Fragment
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
Cobalt Glass Slug (Cullet)
Man-made Silicate Glass with Cobalt Oxide (CoO)
Aura Quartz (Titanium Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti)
Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
Asphalt Concrete
Bituminous Concrete
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
Goldstone (Red)
Aventurine Glass (SiO2 + Cu)
Concrete fragment with Aggregate
Anthropogenic Concrete with Calcarious and Siliceous Aggregate