Chert (Nodule/Common Chert)
Microcrystalline quartz (SiO2)
Category
Browse sedimentary (secondary classification: cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Nodule/Common Chert)
Microcrystalline quartz (SiO2)
Chert (and Flint variant)
Microcrystalline Quartz (SiO2)
Chert / Jasper and River Stones
Microcrystalline Quartz (SiO2)
Chert (containing Flint and Chalcedony)
Microcrystalline Quartz (SiO2)
Chert / Jasper
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Iron-stained River Cobble)
Microcrystalline Quartz (SiO2)
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert with Quartz Veins
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
Dyed Agate
Microcrystalline Quartz (SiO2) with artificial pigment
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert Nodule (Flint)
Microcrystalline Quartz (SiO2)
Chert (Chert Nodule with Cortex)
Microcrystalline Quartz (SiO2)
Chert (often called Jasper in this color variety)
Microcrystalline Quartz (SiO2)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Banded Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
Chert Pebble (Jasper/Quartz variety)
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
Chert (with Lichen)
Microcrystalline Quartz (SiO2)
Chert (with potential fossil inclusion)
Microcrystalline Quartz (SiO2)
Red Chalcedony (likely dyed)
Chalcedony (a variety of Quartz), SiO2
Chalcedony (Banded/Mottled Variety)
Chalcedony (a cryptocrystalline variety of Quartz, SiO2)
Chert (Jasper)
Cryptocrystalline Silicon Dioxide (SiO2)
Blue Chalcedony
Chalcedony (SiO2)
Quartz (Float/Abraded)
Quartz (SiO₂)
Jasper with Agate and Quartz Inclusions
Silicon Dioxide (SiO2) - Chalcedony / Quartz aggregate
Fancy Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Chalcedony (Agate/Chert)
Microcrystalline Quartz (SiO2)