Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)
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
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Opalite
Man-made Glass (SiO2 + additives)
mineraloid (synthetic)
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
metamorphic
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Sea Glass (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Mineraloid (Anthropogenic/Man-made rock)
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Mineral Simulant (Synthetic Glass)
Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
sedimentary
Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Aura Quartz (Rainbow Quartz)
Silicon Dioxide (SiO2) with metallic vapor coatings
mineral
Opalite (Man-made Glass)
Fused glass (typically made of dolomite and metal opacifiers)
Man-made Material / Glass
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
mineraloid
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
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
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
Chert (Arrowhead)
Chert (SiO2)
sedimentary
Diamond
Native Carbon (C)
gemstone
Asphalt Chunk
Asphalt concrete
man-made composite
Hematite
Iron(III) oxide (Fe2O3)
mineral
Tumbled Clear Quartz/Rock Crystal
Silicon Dioxide (SiO2)
mineral
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
Cultured Marble (Synthetic)
Polymer-matrix composite (typically calcium carbonate in polyester resin)
Synthetic / Composite Material
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Not a rock, mineral, or geological specimen
N/A
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
not a rock (man-made origin)
Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
sedimentary
Sandstone (with Liesegang rings or joints)
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)
sedimentary
Chert (often called Flint in archaeological contexts)
Microcrystalline or cryptocrystalline Silica (SiO2)
sedimentary
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Opalite
Man-made glass (traditionally simulated Opal)
mineral
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Green Sea Glass
Man-made silicate glass (weathered)
sedimentary
Ironstone Concretion (Pot Stone)
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
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)