Chert
Microcrystalline Silicon Dioxide (SiO2)
Category
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
Chert
Microcrystalline Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Granite
Phaneritic plutonic rock (SiO2 typically >69%)
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (specifically Flint)
Chert (SiO2)
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
Goldstone (Brown)
Aventurine glass
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Chert (Flint)
Silicon Dioxide (SiO2)
Chert
Chert (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Shale or Slaty Mudstone
Argillaceous sedimentary rock
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Chert (Yellow Jasper/Flint pebble)
Microcrystalline Quartz (SiO2)
Chert (often called Flint in archaeological contexts)
Silicon Dioxide (SiO2)
Chert (Polished River Pebble)
Chert (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Diorite
Diorite (Intermediate intrusive igneous rock)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Pyrite
Iron Disulfide (FeS2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Chert Nodule (Flint)
Chert (Silicon Dioxide, SiO2)
Chert (Yellow/Tan variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)