Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Petrified Wood
Silicified Wood (primarily SiO2)
Dinosaur Bone (Gembone)
Silicified Dinosaur Bone (SiO2 replacing organic tissue)
Banded Agate
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Banded Agate (specifically Carnelian Agate slice)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Carnelian
Silicon Dioxide, variety of chalcedony (SiO2)
Jasper
Microcrystalline quartz (SiO2)
Leopard Jasper
Microcrystalline Quartz (SiO2)
Chert (Chalcedony/Jasper)
Microcrystalline Quartz (SiO2)
Chert (with Iron Staining)
Microcrystalline Quartz (SiO2)
Flint Arrowhead
Cryptocrystalline quartz (Chert/Flint, SiO2)
Fossiliferous Chert
Cryptocrystalline quartz (SiO2) with biogenic inclusions
Heart-shaped River Pebble (Chert/Quartzite)
Cryptocrystalline Quartz (SiO2) / Chert Pebble
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Quartz - SiO2)
Tumbled Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)
Red Jasper (Skull Carving)
Jasper, a cryptocrystalline variety of Quartz (SiO2)
Chert (specifically a weathered Chert nodule or fragment)
Chert; Microcrystalline or Cryptocrystalline Quartz (SiO2)
River Stone (Chert/Siltstone)
Cryptocrystalline Quartz (SiO2) with trace impurities
Chert (or Flint)
Chert (microcrystalline or cryptocrystalline quartz, SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chert (Yellow Jasper/Flint)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
Chert (specifically Pink Chert or Jasperized Chert)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
Yellow Jasper
Cryptocrystalline Quartz (SiO2 with Iron inclusion)
Chert (specifically Gray/Black Chert)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Chert (Flint)
Microcrystalline Quartz or Cryptocrystalline Silica (SiO2)
Chert (or Flint)
Chert (a cryptocrystalline variety of quartz, SiO2)
Chert (Tan/Brown)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chert (and/or Flint)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Banded Agate (specifically Lake Superior Agate or similar)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
Chert (Flint variety)
Chert (Microcrystalline or Cryptocrystalline Quartz), SiO2
Script Jasper
Cryptocrystalline Quartz (SiO2) with fossiliferous inclusions
Jasper or Agate-bearing Chert
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Picture Jasper (specifically Biggs or Deschutes variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Agate (Polished Slice)
Silicon Dioxide (SiO2)