Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral Like Industrial Smelting Waste
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
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Green Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Ironstone Concretion
Ferruginous Concretion
sedimentary
Limonite (Ironstone)
FeO(OH)·nH2O (Hydrous ferric oxides)
mineral
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Fluorite
Calcium Fluoride (CaF2)
mineral
Ironstone Concretion
Ironstone (Limonite/Goethite Concretion)
sedimentary
Ironstone Concretion (Iron Nodule)
Hydrated Iron Oxide Concretion (predominantly Goethite, Α-FeO(OH), and Hematite, Fe2O3)
sedimentary
Bauxite
Bauxite (Al2O3·2H2O)
sedimentary
Anthracite
Anthracite Coal (C)
sedimentary
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Slag (Industrial)
N/A (Anthropogenic Slag)
industrial by-product
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
sedimentary (man-made/anthropogenic)
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Blue-green glassy mineral specimen, possibly chalcedony or slag glass
Uncertain; candidate minerals include chrysocolla-bearing chalcedony or copper-bearing glassy slag
mineral
Kidney Stone
Calcium Oxalate (CaC2O4), Uric Acid, or Struvite
mineral
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Likely anthracite coal fragments
Anthracite; predominantly carbon (C), with minor mineral ash
sedimentary
Ferruginous Sandstone (Ironstone)
Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)
sedimentary
Green glassy slag (often sold as “sea glass” or “green obsidian”)
Industrial vitreous slag; primarily amorphous silicate glass, composition variable
mineral
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Anthropogenic (Man-made industrial byproduct)
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Iron-rich slag or weathered ironstone fragments
Probably hematite–goethite material; possibly industrial iron slag (Fe₂O₃/FeO(OH))
mineral
Copper Ore (with Malachite/Chrysocolla and Iron Oxides)
Secondary Copper Minerals (Cu2(CO3)(OH)2 / (Cu,Al)2H2Si2O5(OH)4·nH2O)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Fluorite
Calcium fluoride, CaF2
Mineral
Iron Slag
Anthropogenic pyrometallurgical residue
industrial byproduct
Fluorite
Calcium Fluoride (CaF2)
mineral
Iron-rich meteorite candidate
Unclassified iron meteorite, possibly an ordinary chondrite or weathered iron oxide-rich meteorite
meteorite
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Iron meteorite (probable, possibly industrial iron slag)
Fe–Ni metallic alloy, commonly kamacite and taenite
meteorite
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Possible iron-rich basalt or industrial slag
Basalt, likely Fe–Mg silicate rock; exact identification is uncertain from the blurred image
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Chert (Lithic flake / Arrowhead fragment)
Microcrystalline Quartz (SiO2)
sedimentary
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral