Chert (Smooth River Stone)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary (cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Smooth River Stone)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Common Opal variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint variety)
Chert (Cryptocrystalline Quartz, SiO2)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Chalcedony (Agate)
Chalcedony (Cryptocrystalline Quartz, SiO2)
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (often called Flint or Jasper)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Yellow Chert
Chert (Cryptocrystalline Quartz, SiO2)
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Pink/Tan variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Chalcedony (Common Opal variant or Chert/Flint)
Silicon Dioxide (SiO2)
Chert (Flint variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (River Cobble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (specifically Gray Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert Arrowhead (Lithic Artifact)
Chert (Cryptocrystalline Quartz, SiO2)
Chert / Flint
Microcrystalline or cryptocrystalline quartz (SiO2)
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (likely flint-bearing chert)
Microcrystalline quartz, SiO₂ (chalcedony/quartz aggregate)
Tumbled brown chalcedony (likely jasper or agate)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining
Orange Quartzite (or Yellow Jasper / Carnelian Chalcedony)
Silicon Dioxide (SiO2)
Red Jasper (possibly Mookaite)
Silicon Dioxide (SiO2) with Hematite inclusions
Tumbled red-brown jasper
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
Chert (Common Opal/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Quartz Vein in Host Rock
Silicon dioxide (SiO2) veining in silicate matrix
Chert
Microcrystalline or cryptocrystalline quartz (SiO2)
Jasper (specifically Bloodstone/Heliotrope or Dark Green Jasper)
Cryptocrystalline Quartz (SiO2) with inclusions
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Yellow Chert (River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Field Stone/Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)