Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (primarily SiO2)
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Blue Chalcedony Geode (with Quartz Druzy)
Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz
Green Jasper
Jasper (variety of Microcrystalline Quartz, SiO2)
Chert (Jasper variety)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper
Silicon dioxide (SiO2)
Chert (Golden/Yellow Variety)
Microcrystalline Silica (SiO2)
Red Jasper
Silicon dioxide (microcrystalline quartz with iron oxide inclusions), SiO2
Chert (specifically Flint or Jasper variant)
Microcrystalline silica (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Chalcedony (Agate/Quartz pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
Banded Chert
Cryptocrystalline Quartz (SiO2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2) with Iron Oxide impurities
Chert (Chert / Flint)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (White Chert/Flint)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (specifically Flint)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Chert (and/or Siltstone River Pebble)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (often called Flint)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Red Jasper
Microcrystalline Quartz (SiO2) with Hematite impurities
Chert (specifically Agate/Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Yellow Jasper
Microcrystalline Quartz with Iron Oxide (SiO2)
Chert (with Fossiliferous Silicification)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert (and Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Grey Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper with Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (variously Flint)
Chert (Microcrystalline or cryptocrystalline Quartz, SiO₂)
Brecciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
Chert / Quartz Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (often called Flint or Jasper locally)
Chert (Microcrystalline Quartz, Formula: SiO2)
Fancy Jasper (Multicolor Agate/Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (variously known as Flint or Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Silicon Dioxide (SiO₂)
Yellow Chert or Jasper
Microcrystalline Quartz (SiO2) with iron oxide inclusions
Cherry Creek Jasper (also known as Red Creek Jasper or Cherry Creek Agate)
Jasper, microcrystalline quartz (SiO₂)