Lapis Lazuli
Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Lapis Lazuli
Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Goldstone
Aventurine Glass (SiO2 + Cu small inclusions)
Slag (Industrial Byproduct)
Ferro-silicate glass (Slag)
Chipped Glass/Plastic Fragment
Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic
Goldstone (Red)
Aventurine Glass
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various additives
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
Slag
Ferrous Slag (Siliceous industrial waste)
Sea Glass (Uranium/Vaseline Glass variant)
Silicon Dioxide (SiO2) with trace Uranium Oxide (U3O8)
Slag Glass / Industrial Slag
Anthropogenic Glass
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Blue Goldstone
Aventurine Glass
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Slag
Anthropogenic Vitrification Product / Silicate Slag
Quartz
Silicon Dioxide (SiO₂)
Smoky Quartz
Smoky Quartz (SiO2)
Lapis Lazuli
A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).
Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides
Sea Glass (Turquoise/Aqua)
Amorphous Silica (SiO2) with transition metal dopants
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various metal oxide impurities
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.
United States Quarter Dollar
Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)
Green Glass Cullet / Recycled Glass
Amorphous Silicon Dioxide (SiO2) with various metal oxides
Cullet Glass (Industrial Slag Glass)
Amorphous Silica (SiO2) with metallic oxide impurities
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Agate (specifically, multi-colored or pastel-dyed agate)
Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
Ironstone Nodule (Ironstone Concretion)
Siderite-rich Mudstone (FeCO3) or Limonite (FeO(OH)·nH2O)
Sandstone Chert/Quartzite
Silicon Dioxide (SiO2) - Sedimentary Sandstone / Orthoquartzite
Polished stone sphere, possibly agate or jasper
Likely microcrystalline quartz (SiO₂); exact variety cannot be confirmed from the image
Quartz Geode
Macrocrystalline Quartz (SiO2) within a geode structure