Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Fossilized Shell in Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Coquina
Coquina (Bioclastic Limestone)
Chert (Commonly known as Flint)
Silicon Dioxide (SiO2)
Chert (Jasper/Common Chert Pebble)
Microcrystalline Quartz (SiO2)
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
Pyrite
Iron Sulfide (FeS2)
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
Limestone
Calcareous sedimentary rock (CaCO3)
Chert
Cryptocrystalline Quartz (SiO2)
Hoodoo (Limestone / Siltstone Formation)
Claron Formation (Sedimentary Rock - Limestone, Mudstone, Dolomite)
Limestone
Sedimentary Rock (Primarily CaCO3)
Chert (often called Flint or Jasper if reddish)
Microcrystalline Quartz (SiO2)
Shale
Shale
Chert / Flint
Microcrystalline Quartz (SiO2)
Flint / Chert
Microcrystalline quartz (SiO2)
Swirled Agate Bead
Silicon Dioxide (SiO2)
Chert (Quartz Variety)
Chert (Silicon Dioxide, SiO2)
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)
Fossilized Shark Tooth (Eroded)
Carcharodon sp. or Otodus sp. fragment (likely)
Fossilized Shark Tooth
Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)
Beach Pebble (Chalcedony / Chert)
Silicon Dioxide (SiO2)
Chert (Black Flint)
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Red Sandstone
Arenite (Iron-rich)
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Breccia
Breccia
Chert / Jasper
Silicon Dioxide (SiO₂)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Coal (Bituminous Coal)
Caustobiolith / Sedimentary Rock
Chert / Flint
Microcrystalline Quartz (SiO2)
Chert (Flint / Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Flint Arrowhead)
Silicon Dioxide (SiO2)