Red Sandstone or Brick Fragment
Arenite (if sandstone)
sedimentary
Category
Anthropogenic (Man Made Material)
Browse anthropogenic (man made material) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Material) in the encyclopedia
View all →
Brick fragment (Man-made material)
N/A (Fired clay)
man-made
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Sedimentary-like (Industrial Composite)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
sedimentary
Fordite
Anthropogenic paint-rock
mineraloid (human-made geological specimen)
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 (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Mineraloid (Anthropogenic/Man-made rock)
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
sedimentary
Aura Quartz (Rainbow Quartz)
Silicon Dioxide (SiO2) with metallic vapor coatings
mineral
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Opalite
Synthetic glass / Opalized glass
gemstone
Asphalt Chunk (Bituminous Concrete)
Aggregated Bitumen / Artificial Breccia
sedimentary
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Anthropgenic (Industrial Byproduct)
Blue Goldstone
Aventurine Glass
man-made glass
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral
Asphalt concrete
Anthropogenic conglomerate
sedimentary
Asphalt Chunk
Asphalt concrete
man-made composite
Opalite
Synthetic Glass (Hydrated Silica Simulant)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Diamond
Native Carbon (C)
gemstone
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
not a rock (man-made origin)
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Cultured Marble (Synthetic)
Polymer-matrix composite (typically calcium carbonate in polyester resin)
Synthetic / Composite Material
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Not a rock, mineral, or geological specimen
N/A
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
gemstone
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Synthetic Resin / Plastic Figurine
Synthetic Polymer (Copolymer of Polyethylene or Resin)
Mineraloid-like Synthetic Material
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
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Slag Glass
SiO2 (Silicon Dioxide) with impurities
man-made glass
Polished brown jasper (likely brecciated or orbicular jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
gemstone