Bituminous Coal
Coal (Organically derived sedimentary rock)
sedimentary
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Technogenic) in the encyclopedia
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Red Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Carborundum (Silicon Carbide)
Silicon carbide (SiC)
mineral
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Antropogenic (Man-made industrial byproduct)
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite (Lithic Artifact)
Quartzite (SiO2)
metamorphic
Smelter Slag
Anthropogenic Silicate Slag
igneous
Iron Slag
Anthropogenic pyrometallurgical residue
industrial byproduct
Likely iron-rich slag or weathered ironstone
Hematite–goethite-rich material (Fe₂O₃/FeO(OH)); possibly industrial iron slag
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Ferrocoke or Slag
Anthropogenic pyrometallurgical residue
igneous
Slag (Industrial By-product)
Anthropogenic Vitreous Silica/Iron Silicate
mineral
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral (synthetic)
Iron Slag
Ferrous Slag (complex silicate and oxide byproduct)
industrial byproduct (anthropogenic)
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Iron Slag
Anthropogenic Vitreous Ferrous Silicate
industrial byproduct (anthropogenic)
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Anthropogenic (Man-made industrial byproduct)
Likely slag or metallic industrial byproduct
Unidentified iron-rich ferrous slag; possibly magnetite-bearing slag
mineral
Iron Slag
Iron smelting byproduct (Glassy/vesicular silicate)
anthropogenic / industrial byproduct
Slag
Ferrous slag (by-product of iron smelting)
Mineraloid / Anthropogenic
Greenstone
Metabasalt / Chlorite-actinolite-epidote schist
metamorphic
Pegmatite
Igneous Pegmatite
igneous
Schist
Schist
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Gneissic Granite
Granite Gneiss
metamorphic
Schist
Mica Schist (Metamorphic rock)
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (Metamorphic high-grade)
metamorphic
Gneiss
Metamorphic Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Feldspathic Gneiss (Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Kimberlite
Ultramafic igneous rock
igneous
Copper Ore (Chrysocolla/Malachite in host rock)
Hydrated copper phyllosilicate and copper carbonate hydroxide
mineral
Quartz Vein in Greenstone
Metamorphic rock with quartz vein (SiO2 / mixed silicates)
metamorphic
Copper Ore (Malachite and Azurite on Host Rock)
Cuprite, Malachite, and Azurite dissemination in gangue
mineral