Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Category
Anthropogenic (Man Made Material Mimicking Sedimentary Rock)
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Material Mimicking Sedimentary Rock) in the encyclopedia
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Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Slate
Metamorphic Pelitic Rock
metamorphic
White Marble
Recrystallized Calcite Rock (CaCO3)
metamorphic
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
sedimentary
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)
Synthetic Mineral Simulant / Glass
Chert (Arrowhead/Projectile Point)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Crushed Limestone
Calcium Carbonate (CaCO3)
Sedimentary
Chert (varietal Flint)
Microcrystalline quartz (SiO2)
sedimentary
River Pebbles (Chert and Quartzite)
Sedimentary Clastic Rock (Silica-rich)
sedimentary
Chert (Flint)
Chert (Cryptocrystalline Silica, SiO2)
sedimentary
Chert (Flint)
Silicon dioxide (SiO2)
sedimentary
Blue goldstone beads
Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli
mineral
Coquina
Bioclastic Limestone
sedimentary
Opalite
Synthetic Glass (Simulated Moonstone/Opal)
gemstone
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
man-made (synthetic rock)
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Coquina / Fossiliferous Limestone
Calcareous bioclastic sedimentary rock (CaCO3)
sedimentary
Painted River Pebble (likely Basalt or Greywacke)
Aphanitic Lithic Clast with Anthropogenic Pigment coating
Sedimentary or Igneous
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Green Agate
Silicon dioxide (SiO₂)
mineral
Greenstone
Metabasalt / Metavolcanic rock
metamorphic
Coquina
Bioclastic Limestone
sedimentary
Chert (Arrowhead/Tool variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Slate
Metamorphic Pelitic Rock
metamorphic
Opalite (a synthetic glass, often confused with Opal)
Silicon dioxide glass (SiO2nH2O, for natural opal)
Synthetic (glass)
Jasper / Chert (Red)
Cryptocrystalline quartz (SiO2)
Sedimentary / Mineral
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)
Synthetic (not a rock or mineral)
Chert (Chocolate or Brown Flint)
Chert (SiO2)
sedimentary
Coquina
Bioclastic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Conglomerate (Asphaltic/Anthropogenic)
Clastic sedimentary rock / Bituminous mixture
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Antropogenic rock (Man-made)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Granite / Diorite (Granodiorite)
Granodiorite / Quartz Diorite
igneous
Chert (Arrowhead variety)
Chert (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Sandstone
Arenite
sedimentary