White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary rock (cryptocrystalline quartz) specimens identified by the Rock Identifier community.
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
Sandstone with Quartz Vein
Arenite with SiO2 intrusion
Flower Agate
Chalcedony (SiO2) with Scolecite/Opaque inclusions
Chalcedony
Cryptocrystalline Quartz (SiO2)
Banded Agate
Cryptocrystalline Quartz (SiO2)
Chert (often referred to as 'Jasper' when red)
Chert (microcrystalline quartz, SiO₂)
Quartz with Chalcedony
Silicon dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Chert (Nodular)
Cryptocrystalline Quartz (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Carnelian
Carnelian (Silicon Dioxide: SiO2 with Iron Oxide impurities)
Red Jasper Concretion
Cryptocrystalline Quartz (SiO2)
Chert (and Jasper/Flint variety)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Brown Chert or Flint)
Cryptocrystalline Quartz (SiO2)
Chert (varietal: Flint/River Pebble)
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or Jasper)
Cryptocrystalline quartz (SiO2)
Chert and Chalcedony
Cryptocrystalline Quartz (SiO2)
Banded Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chert (Common Variety)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Flint)
Cryptocrystalline Quartz (SiO2)
Jasper
Cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Jasper or Flint variant)
Cryptocrystalline Quartz (SiO2)
Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Flint (or Chert)
Cryptocrystalline Quartz (SiO2)
Banded Chert
Cryptocrystalline Quartz (SiO2)
Chalcedony (Common Opal variant or Chert/Flint)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)