Chert (Jasper/Chalcedony)
Silicon dioxide (SiO2) - Microcrystalline quartz
Category
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
Chert (Jasper/Chalcedony)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert (Iron-rich or Slate-like variant)
Silicon Dioxide (SiO2)
Amber Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (Chalcedony/Flint)
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Chert
Microcrystalline Quartz (SiO2)
Chert (varieties: Flint or Chalcedony)
Microcrystalline silica (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Cryptocrystalline Quartz (SiO2)
Chert (Red Jasper)
Microcrystalline Quartz (SiO2)
Travertine
Calcareous Tufa / Travertine (CaCO3)
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Chalky Flint Node)
Chert (Microcrystalline Quartz, SiO2)
Chert (Arrowhead variety)
Chert (SiO2)
Chert (Jasper variety)
Silicon dioxide (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Chert (Flint/Jasper)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Limonite
Limonite (FeOO·nH2O)
Quartz pebble
Silicon dioxide (SiO2)
Banded Sandstone
Quartz Arenite (with iron oxide banding)
Limestone with Lichen
Sedimentary Calcium Carbonate (CaCO3)
Chert (with Iron Staining)
Microcrystalline Quartz (SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Magnetite / Ironstone
Magnetite (Fe3O4)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Sandstone (likely River-tumbled Picture Sandstone)
Arenite (predominantly SiO2 with iron oxide impurities)
Moonstone
Adularia (orthoclase feldspar variety)
Flint
Cryptocrystalline quartz (SiO2)
Chert / Flint (Arrowhead Artifact)
Microcrystalline quartz (SiO2)
Flint / Chert (Fossiliferous)
Silicon dioxide (SiO2) with microcrystalline quartz
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Limestone (Weathered)
Sedimentary Carbonate Rock (CaCO3)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
Banded Iron Formation
Banded Iron Formation (BIF)
Fossiliferous Limestone
Limestone (CaCO3 with Limonite/Goethite staining)