Chert (Iron-rich or Jasperoid)
Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary (secondary classification: cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Iron-rich or Jasperoid)
Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Chert (Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert Nodule (Flint)
Cryptocrystalline quartz (SiO2)
Chert (Black Chert/Flint)
Cryptocrystalline Quartz (SiO2)
Chert (with Limestone and Iron Oxide staining)
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Chert (often called Flint or Agate nodule)
Cryptocrystalline Quartz (SiO2)
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Cryptocrystalline quartz (SiO2)
Chert / Flint (River Pebble)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Chert
Cryptocrystalline Quartz (SiO2)
Yellow Quartzite (or Quartz River Pebble)
Silicon Dioxide (SiO2)
Banded Agate
Chalcedony (Silicon Dioxide, SiO2)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Blue Chalcedony (Agate)
Silicon Dioxide (SiO2)
Chert Pebble with Quartz Veining
Microcrystalline Quartz (SiO2)
Sandstone with Quartz Veining
Arenite with SiO2 veins
Banded Chert
Sedimentary Cryptocrystalline Quartz (SiO2)
Chalcedony (Common Opal variant or Quartz)
Silicon Dioxide (SiO2)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Unopened Geode
Geode (containing various mineralization like Quartz SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Banded Agate (Tumbled)
Cryptocrystalline Quartz (SiO2)
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
Banded Agate
Cryptocrystalline Quartz (SiO2)
Agate (Chalcedony)
Cryptocrystalline Quartz (SiO2)
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Red Jasper with Quartz veins
Jasper (Silicon Dioxide, SiO2) with macrocrystalline Quartz veins
Agate Geode
Cryptocrystalline Quartz (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
Geode (Quartz)
Silicon Dioxide (SiO2)
Chert (often called Flint when dark)
Sedimentary cryptocrystalline quartz (SiO2)
Carnelian / Chalcedony
Cryptocrystalline Quartz (SiO2)
Banded Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)