Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
sedimentary
Category
Man Made Rock Like Material
Browse man made rock like material specimens identified by the Rock Identifier community.
Learn about Man Made Rock Like Material in the encyclopedia
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Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Chalk
Calcium carbonate (CaCO3)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Coquina
Bioclastic Limestone (Coquina)
sedimentary
Sea Glass
Amorphous Silicon Dioxide (Man-made glass weathered by nature)
mineral
Sandstone (Water-worn Cobble)
Arenite (SiO2 with CaCO3 or Fe2O3 cement)
sedimentary
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (specifically sublithic or quartz arenite)
sedimentary
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
sedimentary
Nephrite Jade
Nephrite
Mineral/Rock
Chert (specifically Flint)
Chert (SiO2)
sedimentary
Chert
Microcrystalline silica (SiO2)
sedimentary
Chert (Jasper/Flint var.)
Silicon Dioxide (SiO2)
sedimentary
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Diamond
Diamond (pure Carbon, C)
mineral
Chert (specifically Flint or Common Chert node)
Silicon Dioxide (SiO2)
sedimentary
Pumice
Pumice (Vesicular volcanic glass)
Igneous
Red Sandstone
Quartz Arenite (iron-stained) / SiO2
sedimentary
Chert (Flint / Jasper)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Diamond Druzy (Crystalline Diamond)
Carbon (C)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Commonly known as Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (often called Flint or River Stone)
Microcrystalline alpha-quartz (SiO2)
sedimentary
Chert (Cherty Shale / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
mineraloid
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Mineraloid / Synthetic Glass
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sea Glass (White/Clear)
Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO
Anthropogenic (Man-made product subject to geological processes)
Limestone
Calcareous sedimentary rock (CaCO3)
sedimentary
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Sandstone (composed predominantly of Quartz, SiO2, with Feldspar and Clay minerals)
sedimentary