Goldfish Cracker (Culinary Mimic)
Cibus aurum (Commonly composed of Enriched Wheat Flour and Cheddar Cheese)
Category
Browse anthropogenic sedimentary style organic solid specimens identified by the Rock Identifier community.
Goldfish Cracker (Culinary Mimic)
Cibus aurum (Commonly composed of Enriched Wheat Flour and Cheddar Cheese)
Chert Arrowhead (Lithic Artifact)
Microcrystalline Quartz (SiO2)
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (Chert or Flint)
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Slag (Industrial Byproduct)
Anthropogenic Vitreous Silicate material
Quartz Geode
Macrocrystalline Quartz (SiO2) within a geode structure
Chert (Arrowhead Shard)
Microcrystalline silica (SiO2)
Chert (Arrowhead Artifact)
Microcrystalline Quartz (SiO2)
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
Chert Arrowhead
Microcrystalline Quartz (SiO2)
Chert (Arrowhead Preform or Point)
Chert (Microcrystalline Quartz, SiO2)
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (SiO2)
Chert (Arrowhead Fragment)
Silicon Dioxide (SiO2)
Pearl-and-gemstone insect brooch
Pearl: nacre (aragonite, CaCO₃); colored stones are likely synthetic or natural corundum/spinel/glass, not determinable from the image
Petrified Wood
Fossilized Wood (silicified wood)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Chert (Arrowhead/Tool variety)
Microcrystalline Quartz (SiO2)
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
Chert (Arrowhead/Projectile Point)
Chert (Cryptocrystalline Quartz, SiO2)
Quartz Geode
Silicon Dioxide (SiO2) in sedimentary host rock
Chert Arrowhead (Jasper)
Chert (Cryptocrystalline Quartz, SiO2)
Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Pyrite Geode (Sparkling Druzy)
Iron Sulfide (FeS2) in Sedimentary Nodule
Chert (Arrowhead variety)
Chert (SiO2)
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3) with bioclasts
Asphalt
Asphalt concrete
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Concrete
Anthropogenic Conglomerate
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
Onyx (Black) and Mother of Pearl Inlay
Silicon Dioxide (SiO2) for Onyx; Aragonite (CaCO3) for Mother of Pearl
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
Geode (Unopened)
SiO2 (Quartz-filled Sedimentary Nodule)
Petrified Wood
Silicified Wood (SiO2)
Yellow Jasper (Mookaite style)
Silicon Dioxide (SiO2) with Goethite/Hematite inclusions
Travertine (Tufa)
Chemical Sedimentary Rock (CaCO3)
Petrified Wood
Silicified Wood (SiO2)
Geode with Quartz Crystal Cavity
Silicon Dioxide (SiO2) in Calcareous/Siliceous Matrix