Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Category
Anthropogenic Material (Man Made Rock)
Browse anthropogenic material (man made rock) specimens identified by the Rock Identifier community.
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Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Synthetic Resin Charm (Seal Shape)
Polymer Resin with plastic glitter / Polyethylene terephthalate glitters
Synthetic material (Not a rock or mineral)
Sea Glass
Amorphous Silicon Dioxide (Man-made glass weathered by nature)
mineral
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)
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Opalite
Man-made Glass (SiO2 + additives)
mineraloid (synthetic)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
sedimentary
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
sedimentary
Sea Glass
Man-made vitreous material
mineral
Asphalt Chunk
Asphalt concrete
man-made composite
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral
Polymer Clay (Mock Mineral)
Polyvinyl chloride (PVC) with plasticizers and pigment
Synthetic material (Not a natural rock/mineral)
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Not a rock, mineral, or geological specimen
N/A
Goldstone
Aventurine Glass (Man-made)
mineral
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
sedimentary
Ring with an Orange Inlay
N/A (Man-made object)
Man-made Object (Ring)
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Synthetic (Man-made Glass)
Asphalt Chunk (Bituminous Concrete)
Aggregated Bitumen / Artificial Breccia
sedimentary
Beads (likely glass or man-made material)
N/A (artificial material)
Man-made material, not a natural rock or mineral specimen
Opalite
Synthetic Opalized Glass
gemstone
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Man-made)
mineraloid
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
mineral
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
igneous or metamorphic (base stone); anthropogenic (decoration)
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
mineral
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Concrete fragment or Conglomerate
Artificial Conglomerate (Concrete) or Natural Conglomerate
sedimentary
Chert (Chalky Flint Node)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Sea Glass (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Mineraloid (Anthropogenic/Man-made rock)
Asphalt Concrete
Bituminous Concrete
sedimentary (artificial)
Blue Goldstone
Synthetic glass with cobalt and copper inclusions
man-made glass
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
not a rock (man-made origin)