Iron Slag
Anthropogenic pyrometallurgical byproduct
igneous
Category
Mineral Precipitate (Anthropogenic Context)
Browse mineral precipitate (anthropogenic context) specimens identified by the Rock Identifier community.
Learn about Mineral Precipitate (Anthropogenic Context) in the encyclopedia
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Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Ferrocoke or Slag
Anthropogenic pyrometallurgical residue
igneous
Fordite
Anthropogenic paint-rock
mineraloid (human-made geological specimen)
Iron Slag
Anthropogenic Iron Silicate
industrial byproduct
Concrete with Exposed Aggregate
Anthropogenic conglomerate (Concrete)
man-made rock (sedimentary analogue)
Limonite-pseudomorph after Pyrite (Prophecy Stone)
Goethite and Limonite secondary minerals (FeO(OH)·nH2O) replacing Pyrite (FeS2)
mineral
Yellow Jasper
Chalcedony (SiO2) with iron oxide inclusions
mineral
Ironstone Concretion (Limonite/Goethite)
Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)
sedimentary
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Ironstone Concretion (Moqui Marble)
Iron-oxide concretion (Fe2O3 / FeO(OH))
sedimentary
Concrete Fragment
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Red Sandstone
Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Sandstone Concretion
Limonitic Sandstone Concretion
sedimentary
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartzite Arrowhead
Quartzite (SiO2 silicon dioxide)
metamorphic
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Technonatural composite (often containing sedimentary/igneous aggregate)
Greenstone / Greenschist
Greenschist (containing Chlorite, Epidote, Actinolite)
metamorphic
Chalcedony Geode / Agate Nodule
Cryptocrystalline Quartz (SiO2)
mineral
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Granite Thin Section
Granitic rock (Phaneritic texture)
igneous
Chert (Arrowhead/Projectile Point)
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Granite
Granite (Phaneritic igneous rock)
igneous
Zebra Jasper
Tetragonal Silicon Dioxide (Quartz) with impurities
sedimentary
Granitoid (Granite/Gneiss)
Granitoid silicate rock, primarily quartz and feldspar
igneous/metamorphic
Sea Glass
Amorphous Silica (Anthropogenic glass) - SiO2
mineral
Ferruginous Sandstone Concretion (Ironstone Phosphorite)
Ferruginous Sandstone (variable Fe-oxide/hydroxide composition)
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
mineral
Slag (Industrial By-product)
Anthropogenic Vitreous Silica/Iron Silicate
mineral
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
man-made material
Sandstone Concretion
Sandstone (Sedimentary Rock) with silica or calcite cement
sedimentary
Sandstone (Ferruginous Concretion)
Ferruginous Sandstone Concretion / SiO2 with Fe2O3 cement
sedimentary
Greenstone
Greenschist (metamorphosed mafic igneous rock)
metamorphic
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary