Chert (variations include Flint/Jasper)
Chert (SiO2)
sedimentary
Category
Sedimentary (Cryptocrystalline Silica)
Browse sedimentary (cryptocrystalline silica) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Cryptocrystalline Silica) in the encyclopedia
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Chert (Black Chert / Flint)
Silicon Dioxide (SiO2)
sedimentary
Red Carnelian (Tumbled)
SiO2 (Silicon Dioxide) - variety of Chalcedony
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Jasper with Quartz Veining
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Flint
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Black Onyx
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Jasper-Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Chert / Flint Variety)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
sedimentary
Flint
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz / Chalcedony
Silicon Dioxide (SiO2)
mineral
Chert / River Pebble
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert / Flint Nodules in Limestone
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Carnelian (a variety of Chalcedony)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
sedimentary
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Lightning Stone / Fulgurite-impregnated or Septarian-like Agate
Silicon dioxide (Quartz/Chalcedony) with host rock matrix
sedimentary
Carnelian Ring
SiO2 (Variety of Chalcedony)
gemstone
Carnelian
Silicon Dioxide (Variety of Chalcedony, SiO2)
gemstone
Chert (Flint) with Limestone Coating
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) cortex
sedimentary
Chert (Arrowhead variety)
Chert (SiO2)
sedimentary
Chert (Flint/Jasper)
Silicon Dioxide (SiO2)
sedimentary
Agate with Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Chert (with Quartz Vein)
Microcrystalline silica (SiO2)
sedimentary
Carnelian (Agate / Chalcedony)
Silicon Dioxide (SiO2) - Iron-stained Chalcedony
mineral
Chert (Flint)
Microcrystalline or cryptocrystalline quartz (SiO2)
sedimentary
Chert (Field Pebble)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Yellow or Tan Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (and associated Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Common Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Chert (Limonitic Chert)
Silicon Dioxide (SiO2) with Iron Oxide (Limonite) inclusions
sedimentary