Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
sedimentary
Category
Anthropogenic (Man Made Material Mimicking Sedimentary Rock)
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
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Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Mineraloid (Man-made Glass)
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Sea Glass
Man-made silicate glass weathering product
sedimentary
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
metamorphic (man-made / anthropic)
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Synthetic/Anthropogenic Mineraloid
Blue Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Asphalt Concrete
Bituminous conglomerate
sedimentary
Asphalt Concrete (Bituminous Pavement)
Aggregates in Bitumen Matrix
Technogenic / Anthropogenic Pavement Material
Slag
Metallurgical by-product
Anthropogenic (Man-made material)
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
sedimentary (man-made conglomerate)
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Sedimentary (Synthetic)
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
sedimentary
Ferro-slag (Leland Blue/Slag Glass)
Anthropogenic Vitreous Silica (Industrial Slag)
igneous
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Unidentifiable Rock Fragment
Uncertain
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
N/A - Non-Geological Item
not a rock/mineral
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Anthropogenic (Man-made)
Concrete
Hydrated Portland Cement Aggregate Composite
Anthropogenic Sedimentary (Man-made)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
mineral
Asphalt / Road Aggregate
Bituminous Conglomerate (synthetic)
sedimentary
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)
Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Opalite
Synthesized glass / Silicon dioxide glass
gemstone
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Concrete-like aggregate surface with embedded rock fragments
Anthropogenic concrete or exposed aggregate; not a natural rock specimen
sedimentary
Fordite
Anthropogenic paint-rock
mineraloid (human-made geological specimen)
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Fossilized Shell Fragment
Invertebrate marine fossil, likely calcium carbonate replacement
fossil
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary