Chert (Iron-rich variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary rock (technically chert, a microcrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Iron-rich variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
Green Chert (Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper
Silicon Dioxide (SiO2)
Yellow Jasper (Chert)
Silicon Dioxide (SiO2) with iron inclusions
Jasper (Chert)
Silicon Dioxide (SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper with Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (and Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Ferruginous Chert (Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Grey and White Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint/Jasper variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (with Iron Staining)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Gravel specimen)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint in this context)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (or Flint)
Chert (a cryptocrystalline variety of quartz, SiO2)
Chert (Jasper focus)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert (Flint)
Chert (predominantly SiO₂ - silicon dioxide)
Chert (often called Flint in this variation)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert Pebble (Jasperoid/Flint)
Silicon Dioxide (SiO2) - cryptocrystalline quartz
Chert (Brecciated or Veined)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (with Fossiliferous Silicification)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper (possibly Carnelian)
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Chert (and Flint)
Silicon dioxide (SiO2) - Microcrystalline or Cryptocrystalline Quartz
Chert (Jasper/Jasperoid)
Chert (chemically precipitated microcrystalline Quartz, SiO2)
Chert Nodule (Flint)
Chert (Cryptocrystalline Silica - SiO2)
Chert (Flint Nodules)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert (often called Flint or Chalcedony Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert Pebble (Flint)
Microcrystalline/Cryptocrystalline Quartz (SiO2)
Oolitic Chert
Silicon Dioxide (SiO2) with oolitic texture
Mookaite Jasper
Silicified Radiolarite (Silicon Dioxide: SiO2)
Chert (Jasper/Ironstone variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Jasper/River Stone)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert (Flint variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Flint Pebbles)
Microcrystalline or Cryptocrystalline Quartz (SiO2)