Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Category
Man Made Material (Anthro Lithic Product)
Browse man made material (anthro lithic product) specimens identified by the Rock Identifier community.
Learn about Man Made Material (Anthro Lithic Product) in the encyclopedia
View all →
Asphalt (Bituminous pavement)
Bituminous concrete / Asphalt
Sedimentary (Anthropogenic)
Dragon Vein Agate (Dyed/Treated)
Agate (SiO2)
mineral
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Sedimentary-like (Industrial Composite)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
sedimentary
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Mineral Simulant (Synthetic Glass)
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Opalite
Synthetic glass / Opalized glass
gemstone
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
Green Sea Glass
Man-made vitreous material (silica glass)
gemstone
Blue-green cabochon, likely chalcedony or treated glass imitation
Cryptocrystalline quartz (chalcedony/possibly chrysoprase); identification uncertain from image
gemstone
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Anthropgenic (Industrial Byproduct)
Blue Goldstone
Aventurine Glass
man-made glass
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Synthetic Resin / Plastic Figurine
Synthetic Polymer (Copolymer of Polyethylene or Resin)
Mineraloid-like Synthetic Material
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Diamond
Native Carbon (C)
gemstone
Asphalt Chunk
Asphalt concrete
man-made composite
Opalite
Synthetic Glass (Hydrated Silica Simulant)
mineral
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Likely tumbled or cut quartz/chalcedony fragment
Silicon dioxide (SiO₂), probably microcrystalline quartz or quartz
mineral
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Flint / Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Not a rock, mineral, or geological specimen
N/A
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
gemstone
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Antropogenic (Man-made)
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
Diamond / Clear Quartz / Glass paste
Carbon (Diamond) / Silicon Dioxide (Quartz)
gemstone
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
gemstone
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary