Limestone (containing Fossil Mold)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Category
Mineral Like Industrial Smelting Waste
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
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Blue-green crystal point, likely fluorite
Fluorite (CaF₂), tentative visual identification
mineral
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
mineral
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Antropogenic rock (Man-made)
Anthracite Coal
Anthracite coal (High-rank coal)
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Green Fluorite Carving
Calcium Fluoride (CaF₂)
mineral
Limonite (Iron Ore)
Limonite (Hydrated iron oxide - FeO(OH)·nH2O)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Slag
Anthropogenic Iron Silicate Glass
mineral
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Ironstone (Limonitic Sandstone)
Ferruginous Sandstone (rich in Limonite: FeO(OH)·nH2O)
sedimentary
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Mineral equivalent / Metal Alloy
Ferruginous Sandstone (Ironstone)
Ferruginous Sandstone / Limonite-cemented Quartz Sandstone
sedimentary
Coprolite
Fossilized Feces
sedimentary
Cupronickel Coin
Copper-Nickel Alloy (typically 75% Cu, 25% Ni)
anthropic metallic specimen
Slag (Industrial Glassy Byproduct)
Ferro-silicate Slag
Anthropogenic / Non-Natural
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Smelter Slag
Anthropogenic Silicate Slag
igneous
Coal (Anthracite)
Anthracite coal (Carbon C)
sedimentary
Iron Slag
Iron Slag (Industrial Vitreous Material)
Mineral/By-product
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Anthropogenic (Man-made)
Green Fluorite (Polished Egg)
Fluorite (Calcium Fluoride, CaF₂)
mineral
Slag (Industrial Byproduct)
Ferro-silicate glass (Slag)
Anthropogenic (Man-made industrial deposit)
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Basalt or Slag
Extrusive Igneous Rock / Industrial Slag
igneous
Slag (Industrial Glass)
Anthropogenic Amorphous Vitreous Silicate
mineraloid
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Slag
industrial by-product
Rounded metallic-looking pebble, likely iron-rich rock or slag
Uncertain; possible limonite/goethite-rich ironstone, hematite-bearing material, or industrial slag
mineral
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
sedimentary
Asphalt (Aggregate)
Bituminous macadam / Concrete Aggregate
sedimentary
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Small dark rock fragment
Uncertain; possibly weathered basalt or slag
mineral
Concrete fragment with Aggregate
Anthropogenic Concrete with Calcarious and Siliceous Aggregate
sedimentary (anthropogenic/man-made)
Possible industrial slag or basaltic volcanic glass
Likely iron-rich vitreous slag; natural alternative: basaltic glass (tachylite)
igneous
Anthracite
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Antropogenic (Man-made material)
Green Slag Glass (Cullet)
Amorphous Silica (Industrial Glass Byproduct)
Synthetic/Byproduct (Non-igneous, non-sedimentary, non-metamorphic)
Vesicular iron-rich slag or weathered metallic ore
Indeterminate; likely Fe-oxide-bearing slag (magnetite/hematite) rather than a specific natural mineral
mineral