Chert (Flint)
Microcrystalline quartz (SiO2)
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Chert (Flint)
Microcrystalline quartz (SiO2)
Sandstone
Arenite
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
Chert (Chert / Flint Variety)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
Banded Slate (Lithified Mudstone)
Low-grade Metamorphosed Mudstone / Slate
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
Chalk
Carbonate rock (mainly CaCO3)
Chert (Flint)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Chert (specifically Flint)
Chert (SiO2)
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
Coquina
Bioclastic Limestone
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Chert
Chert (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline 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)
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
Chert (Flint)
Silicon Dioxide (SiO2)
Bivalve Fossil (Shell Fragment)
Class Bivalvia (Calcium Carbonate - CaCO3)
Shale
Shale
Ferruginous Sandstone (Ironstone)
Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)
Chert (Yellow/Tan variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (often called Flint)
Chert (Microcrystalline or cryptocrystalline Silica, SiO2)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2)
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)