Chert (Vuggy or Chalcedony)
Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary rock (cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Vuggy or Chalcedony)
Cryptocrystalline Quartz (SiO2)
Brown Chert
Cryptocrystalline Quartz (SiO2)
Chert / Flint Nodule
Cryptocrystalline quartz (SiO2)
Chert (Light Variety)
Sedimentary cryptocrystalline quartz (SiO2)
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
Chert (Chalcedony-rich sedimentary rock)
Cryptocrystalline Quartz (SiO2)
Chert Nodule
Chert / Microcrystalline Quartz (SiO2)
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (River Pebble)
Cryptocrystalline Quartz (SiO2)
Geode with Quartz and possibly Jasper/Hematite
Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides
Chert Nodule (with Geode cavity)
Cryptocrystalline Quartz (SiO2)
Jasper
Cryptocrystalline Quartz (SiO2)
Chert (Jasper)
Sedimentary Cryptocrystalline Quartz (SiO2)
Blue Chalcedony (Moonstone-like / Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Nodule)
Cryptocrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Chert (Iron-rich River Pebble)
Cryptocrystalline Quartz (SiO2)
Chalcedony / Agate Pebble
Silicon Dioxide (SiO2)
Flint
Sedimentary cryptocrystalline quartz (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
Chert Pebble
Chert (Microcrystalline Quartz, SiO2)
Hag Stone
Perforated Quartz / Sedimentary Rock
Chert / Flint (Brecciated or Fossiliferous Limestone with Silicification)
Sedimentary cryptocrystalline quartz (SiO2)
Chert / Flint Nodule
Microcrystalline quartz (SiO2)
Chert (and Flint)
Cryptocrystalline Quartz (SiO2)
Chert (River Pebble)
Cryptocrystalline Quartz (SiO2)
Chert (varietal: Flint Pitted Pebble)
Cryptocrystalline Quartz (SiO2)
Chert / Chalcedony Pebble
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert / Flint Nodule
Cryptocrystalline quartz (SiO2)
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Quartz-veined Limestone
Sedimentary limestone with quartz/calcite veinlets
Chert (Green and Black Jasper variant)
Cryptocrystalline Quartz (SiO2)
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
Chert (Jasper variety)
Cryptocrystalline quartz (SiO2)
Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles
Mixed gemstones (primarily Silicon Dioxide - SiO2)
River Pebble
Quartzite / Weathered Sedimentary Rock
Flint / Chert (or fossiliferous nodule)
Microcrystalline quartz (SiO2)
Chert / Jasper
Cryptocrystalline Quartz (SiO2)
Chert (specifically Yellow Jasper)
Sedimentary Cryptocrystalline Quartz (SiO2)