Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
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
View all →
Cullet Glass / Slag Glass
Amorphous silica glass
man-made glass / industrial byproduct
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
N/A - Non-Geological Item
not a rock/mineral
Slag
Metallurgical by-product
Anthropogenic (Man-made material)
Opalite
Synthetic glass / Opalized glass
gemstone
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Synthetic/Man-made Polymer
Concrete Fragment
Hardened Portland Cement Composite
Anthropogenic (Man-made material mimicking sedimentary rock)
Asphalt Concrete
Bituminous conglomerate
sedimentary
Asphalt (Road Aggregate)
Bituminous conglomerate
sedimentary
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Asphalt / Road Aggregate
Bituminous Conglomerate (synthetic)
sedimentary
Diamond (or Simulant)
Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)
gemstone
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Anthropogenic (Man-made)
Sea Glass
Man-made vitreous material
mineral
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
sedimentary
Asphalt Concrete
Bituminous Concrete
sedimentary (artificial)
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
metamorphic
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
sedimentary (man-made conglomerate)
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Chert (Chalky Flint Node)
Chert (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
Unidentifiable Rock Fragment
Uncertain
Chert (Arrowhead Shard)
Microcrystalline silica (SiO2)
sedimentary
Red Sandstone or Brick Fragment
Arenite (if sandstone)
sedimentary
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Concrete fragment or Conglomerate
Artificial Conglomerate (Concrete) or Natural Conglomerate
sedimentary
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Mineral byproduct (Anthropogenic)
Likely tumbled red mineral or glass imitation
Indeterminate; possibilities include red jasper (microcrystalline quartz, SiO₂) or dyed chalcedony
mineral
Goldstone
Aventurine Glass (Man-made)
mineral
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Brick fragment (Man-made material)
N/A (Fired clay)
man-made
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact