Slag
Ferrous Slag (Siliceous industrial waste)
Anthropogenic (Man-made industrial byproduct)
Category
Anthropogenic Specimen (Man Made)
Browse anthropogenic specimen (man made) specimens identified by the Rock Identifier community.
Iron Slag
Anthropogenic Vitreous Ferrous Silicate
industrial byproduct (anthropogenic)
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Anthropogenic Material (Man-made Rock)
Nickel coin (U.S. currency)
Cupronickel (75% Copper, 25% Nickel alloy)
man-made alloy (metallic)
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
sedimentary
Diamond (in a jewelry setting)
Diamond (Carbon, C)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Antropogenic (Man-made glass byproduct)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
sedimentary
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
sedimentary
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Cobalt Glass Slug (Man-made Glass)
Amorphous Silica with Cobalt Oxide (SiO2 + CoO)
mineraloid
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Native Silver
Silver (elemental Ag)
mineral
Cupronickel (on a 1981 Mexico 20 Pesos coin)
Copper-Nickel Alloy (Cu75Ni25)
mineral
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Technonatural composite (often containing sedimentary/igneous aggregate)
Mystic Topaz
Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)
mineral
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Diorite (River Pebble)
Intermediate plutonic igneous rock
igneous
Chert (Common Variety, Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite Arrowhead (Archaeological Lithic)
Recrystallized Quartz (SiO2)
metamorphic
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
mineral
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chrysocolla in Malachite
Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
mineral
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
mineral
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
igneous
Goldstone
N/A (Synthetic Glass with Copper Inclusions)
Manufactured Glass
Iron Slag
Anthropogenic Iron oxide/Silicate composite
Mineral-like byproduct (Technogenic)
Iron Slag
Anthropogenic Vitreous Silicate (Byproduct of Smelting)
Mineral-like byproduct
Slag (Industrial By-product)
Anthropogenic Vitreous Silica/Iron Silicate
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Petrified Wood (Silicified Wood)
Silicified Paleoflora (mainly Quartz, SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Antropogenic (Man-made industrial byproduct)