Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Category
Not A Rock Or Mineral (Anthropogenic Material)
Browse not a rock or mineral (anthropogenic material) specimens identified by the Rock Identifier community.
Learn about Not A Rock Or Mineral (Anthropogenic Material) in the encyclopedia
View all →
Note: Item is not a geological specimen
Homo sapiens (Dermal Appendage: Pilus)
Organic / Biological
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Synthetic/Consumer Product
Concrete
Anthropogenic Conglomerate
sedimentary
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
sedimentary
N/A (Non-Geological Object)
N/A
Green glass-like cabochon, likely synthetic glass or resin
Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin
gemstone
Concrete rubble
Anthropogenic conglomerate
sedimentary
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Smelter Slag
Anthropogenic Silicate Slag
igneous
Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
sedimentary
Unable to Identify (Image Obscured)
Indeterminate
Druzy Quartz on Quartz Base
Silicon Dioxide (SiO2)
mineral
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
sedimentary
Fordite
Anthropogenic paint-rock
mineraloid (human-made geological specimen)
Quartz Druzy (on Matrix)
Silicon Dioxide (SiO2)
mineral
Not a geological specimen
N/A (man-made object)
N/A
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Concrete / Anthropogenic Conglomerate
Man-made composite material (Portland cement, aggregate, and water)
not a natural rock
Slag (Industrial Byproduct)
Anthropogenic Vitreous Silicate material
igneous
Goldstone (aventurine glass)
Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone
gemstone
Possible tektite or iron-rich slag-like natural specimen
Uncertain; possibly natural glass (tektite) or magnetite-rich rock
mineral
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Concrete / Conglomerate (Man-made)
Artificial Conglomerate (Cementitious Composite)
sedimentary
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Technonatural composite (often containing sedimentary/igneous aggregate)
Popcorn
Zea mays everta (P. Wilson) (Botanical name for the corn variety)
Organic/Biogenic
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Concrete with Exposed Aggregate
Anthropogenic conglomerate (Concrete)
man-made rock (sedimentary analogue)
Slag
Anthropogenic Vitreous Silica/Iron oxides
mineral-like byproduct
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
sedimentary (anthropogenic/technogenic)
Asphalt concrete
Anthropogenic conglomerate
sedimentary
Lava Rock with Fabric Impression
Scoria or Basalt with anthropogenic impressions
igneous
Concrete fragment with Aggregate
Anthropogenic Concrete with Calcarious and Siliceous Aggregate
sedimentary (anthropogenic/man-made)