Chert (and Flint)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (and Flint)
Silicon Dioxide (SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2)
Chalcedony (Blue Dragon/Gray Chalcedony)
Silicon Dioxide (SiO₂)
Chert (Flint/Chalcedony)
Silicon Dioxide (SiO2)
Jasper with Quartz
Silicon Dioxide (SiO2) - Chalcedony variety
Common Brown Pebble
Weathered Rock Fragment
Banded Agate
Silicon Dioxide (SiO2)
Kambaba Jasper
Stromatolite (Fossilized Algae)
Chert (Flint variety)
Silicon dioxide (SiO2)
Chert (Chert / Flint)
Silicon Dioxide (SiO2)
Chert with Quartz Vein
Microcrystalline Quartz (SiO2)
Chert Nodule (Flint)
Silicon Dioxide (SiO2)
Chert Arrowhead
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert
Microcrystalline Quartz (SiO2)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Snakeskin Agate
Agate (Cryptocrystalline Quartz, SiO2)
Chalcedony (Agate/Jasper mix)
Cryptocrystalline Sillimanite (Quartz) - SiO2
Yellow Agate
Chalcedony (cryptocrystalline Quartz), SiO2
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (primarily SiO2)
Chert (Chalcedony / Flint)
Microcrystalline Quartz (SiO2)
Carnelian (Orange Agate)
Silicon Dioxide (SiO2)
Quartzite Pebble (or River Agate/Chert)
Silicon Dioxide (SiO2)
Banded Iron Formation / Chert with Quartz Veining
Banded Iron Formation (BIF) / Cryptocrystalline Quartz (SiO2)
Chert (Banded)
Microcrystalline Quartz (SiO2)
Chert with Quartz Veining
Microcrystalline Quartz (SiO2)
Agate with Druzy Quartz
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Chert (Iron-rich or Slate-like variant)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Banded Agate (Yellow/Honey Agate)
Agate (Cryptocrystalline Quartz, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Bloodstone
Heliotrope (Cryptocrystalline Quartz, SiO2)
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Chalcedony (Agate / Jasper Pebble)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Chert Pebble
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety