Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral
Category
Anthropogenic (Man Made Material Mimicking Sedimentary Rock)
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
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Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Asphalt Chunk
Asphalt concrete
man-made composite
Blue Goldstone
Synthetic glass with cobalt and copper inclusions
man-made glass
Weathered iron-rich concretion or ironstone nodule
Goethite–hematite limonite concretion (FeO(OH), Fe₂O₃, and hydrated iron oxides)
sedimentary
Porcelain (White Ceramic)
Mullite-bearing Vitrified Ceramic (Major phases: Mullite Al6Si2O13, Glassy Silica SiO2)
metamorphic
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Sea Glass (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Mineraloid (Anthropogenic/Man-made rock)
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Crackled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Sandstone Concretion
Limonitic Sandstone Concretion
sedimentary
Ironstone Concretion
Ironstone (primarily Siderite or Limonite)
sedimentary
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
not a rock (man-made origin)
Tumbled Clear Quartz/Rock Crystal
Silicon Dioxide (SiO2)
mineral
Chakra Stone (Composite / Man-made Bonded Gemstones)
Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)
Combined Minerals / Metaphysical stones
Concretion
Sedimentary Concretion (Ironstone / Calcite Concretion)
sedimentary
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
metamorphic
Sandstone Concretion
Clastic Sedimentary Concretion (SiO2 with Iron Oxide)
sedimentary
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
sedimentary
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Ocean Jasper Mushroom
Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)
mineral
Not a rock, mineral, or geological specimen
N/A
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Man-made material (metal)
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)
Asphalt concrete
Anthropogenic conglomerate
sedimentary
Slag
Metallurgical Slag
igneous
Gastropod Internal Mold (Steinkern)
Class Gastropoda fossil mold (Phylum Mollusca)
sedimentary
Mohave Turquoise (Composite/Stabilized)
Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions
mineral
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
mineral
Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
sedimentary or igneous
Opalite
Synthetic Glass (Hydrated Silica Simulant)
mineral
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
sedimentary
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Blue Obsidian
Volcanic Glass (SiO2 with inclusions)
igneous
Goldstone
Aventurine Glass (Man-made)
mineral
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Opalite
Synthetic Glass (Simulated Opal)
gemstone
Dzi Bead (Etched Chalcedony)
Cryptocrystalline Quartz (SiO2) with chemical etching
mineral