Chert (Iron-stained)
Chert (Microcrystalline Quartz, SiO2)
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Chert (Iron-stained)
Chert (Microcrystalline Quartz, SiO2)
Blue Lace Agate (Tumbled)
Silicon Dioxide (SiO2) with trace minerals
Chert / Flint
Microcrystalline quartz (SiO2)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
Quartz (Milky or Cloudy)
Silicon Dioxide (SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Banded Agate (specifically Moss or River Agate variety)
Cryptocrystalline Quartz (SiO2)
Banded Agate / Lace Agate
Agate (Silica/Quartz) - SiO2
Flint / Chert Pebble
Cryptocrystalline quartz (SiO2)
Agate (specifically a Banded Agate with a Quartz Druzy center)
Silicon Dioxide (SiO2)
Chalcedony (specifically Blue Chalcedony or Common Opal variety)
Silicon Dioxide (SiO₂)
Chert (specifically Novaculite)
Microcrystalline Quartz (SiO2)
Chert (Pink/Red variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint variety)
Chert (SiO2)
Chert (containing Flint nodules)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Bloodstone
Heliotrope (a variety of Chalcedony, SiO₂ with inclusions)
Jasper
Silicon dioxide (SiO2)
Flint
SiO2 (Cryptocrystalline Quartz / Chert)
Banded Agate (specifically Sardonyx or Black Agate variety)
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
Chert (Yellow Jasper)
Silicon Dioxide (SiO2)
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Chert (specifically Agate/Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Carnelian
Cryptocrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2) - Impure Variety of Chert
Flint
Microcrystalline Quartz (SiO2)
Banded Agate
Agate (chalcedony variety of Silicon Dioxide, SiO2)
Green Jasper with Agate Banding
Silicon Dioxide (SiO2) with impurities of ferrous silicate or chlorite
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Citrine Quartz carving
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
Jasper (specifically Picture Jasper or Landscape Jasper)
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
Chert (specifically Yellow Jasper variety)
Silicon Dioxide (SiO2)
Flint
Sedimentary cryptocrystalline quartz (SiO2)
Jasper Conglomerate (Puddingstone)
Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)
Lake Superior Agate
Cryptocrystalline Quartz (SiO2)