Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary (microcrystalline silicate) specimens identified by the Rock Identifier community.
Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Jasper (specifically Yellow/Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Amethyst and Agate Geode Section
Silicon Dioxide (SiO2) - Crystalline Quartz and Chalcedony
Chert (Jasper variation)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Jasper
Silicon Dioxide (SiO2)
Carnelian (Red Chalcedony)
Silicon Dioxide (SiO2)
Carnelian
Carnelian (SiO2, Silicon Dioxide with Iron Oxide impurities)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
Botryoidal Lace Agate
Agate (Silicon Dioxide, SiO2)
Chert (often referred to as Flint or Jasper)
Chalcedony (SiO2) - Silicon Dioxide
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Carnelian type)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Flint
Silicon dioxide (SiO2) - Microcrystalline Quartz
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Banded Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (varieties: Flint or Jasper)
Silicon dioxide (SiO2) / Microcrystalline Quartz
Chert (Arrowhead Point)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper
Jasper (Silicified microcrystalline quartz) - SiO2
Red Jasper
Chalcedony/Quartz (SiO2) with iron inclusions
Chalcedony (Chert/Flint)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Chalcedony (Common Opal or Agate variant)
Silicon Dioxide (SiO₂)
Jasper
Silicon dioxide (SiO2) with impurities
Carnelian
Carnelian (variety of Chalcedony, SiO2 with iron oxide impurities)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Quartz (SiO2) with Iron Oxide impurities
Jasper
Jasper (Silicon Dioxide, SiO2)
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
Banded Jasper
Silicon Dioxide (SiO2) with impurities
Chert (and Jasper/Flint variety)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Red Chert/Jasper variety)
Silicon Dioxide (SiO2)
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Petrified Wood
Silicified Wood (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper)
Silicon Dioxide (SiO2)
Yellow Jasper
Cryptocrystalline Quartz (SiO2 with Iron inclusion)