Petrified Wood
Silicified Wood (SiO2)
Category
Browse sedimentary rock (technically chert, a microcrystalline quartz) specimens identified by the Rock Identifier community.
Petrified Wood
Silicified Wood (SiO2)
Quartzite (Quartz sand or Chert)
Quartzite (SiO2)
Chert (variously known as Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Smooth River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Jasper/Brown Chert)
Silicon Dioxide (SiO2)
Quartz (Agate or Chert pebble)
Silicon Dioxide (SiO2)
River Pebble (likely Quartzite or Chert)
Silicon Dioxide (SiO2)
Chert (Green variety)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Chert (Microcrystalline and Cryptocrystalline Quartz, SiO2)
Chert (specifically a Worked Flint/Knapped Flake)
Chert / Flint (Microcrystalline Quartz, SiO2)
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Hag Stone
Porous Quartz or Chert Pebble (SiO2)
Chert (Jasper/Quartzite Pebble)
Silicon Dioxide (SiO2)
Agate Geode with Quartz Druzy
Chalcedony (SiO2) and Quartz (SiO2)
Chert (Yellow Jasper/Flint)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Hag Stone
Perforated Chert (Microcrystalline Silica, SiO2)
Yellow Quartz (Chert/Chalcedony)
Silicon Dioxide (SiO2) with iron inclusions
Chert (Flint)
Silicon Dioxide (SiO2)
Chert / Flint (River Pebble)
Cryptocrystalline Quartz (SiO2)
Chert (Iron-stained or Dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (and Flint variant)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (River Pebble)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Red Jasper (possibly Carnelian)
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Chert (Flint)
Silicon Dioxide (SiO2)
River Stone (Chalcedony/Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint in dark varieties)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (varieties include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Golden/Yellow Variety)
Microcrystalline Silica (SiO2)
Quartzite
Quartzite (composed primarily of Silicon Dioxide, SiO2)
Chert / Flint Conglomerate
Silicified Sedimentary Breccia (primarily SiO2)
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Yellow Chalcedony (Agate/Chert)
Cryptocrystalline Quartz (SiO2)