Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Category
Anthropogenic Material (Man Made Sedimentary Mimic)
Browse anthropogenic material (man made sedimentary mimic) specimens identified by the Rock Identifier community.
Learn about Anthropogenic Material (Man Made Sedimentary Mimic) in the encyclopedia
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Concrete Fragment
Hardened Portland Cement Composite
Anthropogenic (Man-made material mimicking sedimentary rock)
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Asphalt (Road Aggregate)
Bituminous conglomerate
sedimentary
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Diamond (or Simulant)
Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)
gemstone
Asphalt Concrete
Bituminous conglomerate
sedimentary
Asphalt / Road Aggregate
Bituminous Conglomerate (synthetic)
sedimentary
N/A - Non-Geological Item
not a rock/mineral
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Synthetic/Man-made Polymer
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Anthropogenic (Man-made)
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
sedimentary (man-made conglomerate)
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Sea Glass
Amorphous Silicon Dioxide (Man-made glass weathered by nature)
mineral
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
sedimentary
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Asphalt Concrete
Bituminous Concrete
sedimentary (artificial)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Chert (Chalky Flint Node)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Mineral byproduct (Anthropogenic)
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Concrete fragment or Conglomerate
Artificial Conglomerate (Concrete) or Natural Conglomerate
sedimentary
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Red Sandstone or Brick Fragment
Arenite (if sandstone)
sedimentary
Chert (Arrowhead Shard)
Microcrystalline silica (SiO2)
sedimentary
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
metamorphic
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)
Unidentifiable Rock Fragment
Uncertain
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sea Glass
Man-made vitreous material
mineral
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Asphalt Concrete (Bituminous Concrete)
Bituminous aggregate
sedimentary
Brick fragment (Man-made material)
N/A (Fired clay)
man-made
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities
mineraloid
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
sedimentary