Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Category
Sedimentary (Microcrystalline Quartz)
Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.
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Chert (variations include Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint or Jasper when pigmented)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (White Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (also known as Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
Sedimentary / Mineral
Chert (Flint)
Chert (SiO2)
sedimentary
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Red Jasper (Polished)
Jasper (Iron-rich Microcrystalline Quartz, SiO2)
sedimentary
Chert (within Limestone)
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Jasper (Iron-rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite) inclusions
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Iron oxide inclusions)
sedimentary
Red Jasper
Silicon Dioxide (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Jasper with Quartz inclusions
Silicon Dioxide (SiO2)
sedimentary
Agate
Cryptocrystalline quartz (SiO2)
mineral
Chert (Chert breccia)
SiO2 (Silicon Dioxide)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Chert (Flint variety)
Chert (SiO2)
sedimentary
Chert (Arrowhead Artifact)
Chert (SiO2)
sedimentary
Petrified Wood
Silicified wood (primarily SiO2)
sedimentary
Fossiliferous Chert with Brachiopod Impression
Chert (SiO2) containing Brachiopoda fossil remains
sedimentary
Jasper (likely Brecciated or Multi-colored)
Jasper (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Jasper
Silicon dioxide (SiO2)
Mineral/Sedimentary
Chert / Microcrystalline Quartz
Chert (SiO2)
sedimentary
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Sedimentary
Polished Agate Geode
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Chert
Cryptocrystalline Quartz (SiO2)
sedimentary
Red Jasper with Quartz
Microcrystalline Quartz (SiO2) with Hematite inclusions
sedimentary
Chalcedony (Botryoidal Agate vein)
Chalcedony (Microcrystalline Quartz) - SiO2
mineral
Red Jasper
Microcrystalline Quartz (SiO2 with Iron Oxide impurities)
sedimentary
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
igneous