Chert / Flint
Cryptocrystalline quartz (SiO2)
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Chert / Flint
Cryptocrystalline quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Coquina
Bioclastic Limestone (Coquina)
Chalk
Calcium carbonate (CaCO3)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2)
Chalk
Calcium Carbonate (CaCO3)
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Riverstone (Sandstone Pebble)
Arenite (SiO2 with various lithic fragments)
Slate
Metamorphic Pelitic Rock
Chalcedony (Common Opal or Agate variant)
Silicon dioxide (SiO2) with trace hydration
Sandstone
Arenite (siliciclastic sedimentary rock composed mostly of quartz)
Limestone
Sedimentary Rock (Primarily CaCO3)
Chert (often called Flint in archaeological contexts)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Polished River Pebble)
Chert (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Yellow Jasper/Flint pebble)
Microcrystalline Quartz (SiO2)
Diamond (or Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
Diamond
Native Carbon (C)
Diamond (in a jewelry setting)
Carbon (C)
Coquina
Biogenic Limestone (CaCO3)
Flint
Silicon dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Coquina and Oyster Fossil Rock
Coquina limestone (Calcium Carbonate, CaCO3) containing fossilized Crassostrea / bivalve shells
Chert (varieties: Flint or Jasper)
Silicon dioxide (SiO2) / Microcrystalline Quartz
Diamond
Carbon (C)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Chert / Flint
Silicon Dioxide (SiO2)
Sandstone
Arenite
Red Sandstone
Arenite (Ferruginous Sandstone)
Pyrite
Iron Sulfide (FeS2)
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
Banded Slag Glass (Leland Blue/Frankfort Green style)
Anthropogenic Glass Specimen (Amorphous Silicon Dioxide with impurities)
Marble
Recrystallized Calcite (CaCO3)
Chert (Flint)
Silicon Dioxide (SiO2)
Bivalve Fossil (Shell Fragment)
Class Bivalvia (Calcium Carbonate - CaCO3)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Coquina
Biogenic Limestone (Calcite, CaCO3)
Coquina
Biogenic Limestone (Coquina)