Chert (Nodule)
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (microcrystalline silicate) specimens identified by the Rock Identifier community.
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert / Flint
Microcrystalline Quartz (SiO2)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions
Chert (Yellow or Ochre Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
Chert (specifically a fragment with Desert Varnish)
Microcrystalline quartz (SiO2)
Chert (specifically Gray/Blue-Gray Chert)
Chert (SiO2)
Banded Agate
Cryptocrystalline Quartz (SiO2)
Chrysocolla in Quartz (Quantum Quattro variant)
Hydrated copper silicates (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) often mixed with SiO2
Jasper
Silicon dioxide (SiO2) with impurities
Yellow Chalcedony (common opal or chert variant)
Silicon Dioxide (SiO2)
Chert (specifically Jasper or Flint type)
Microcrystalline Quartz (SiO2)
Chert / River Jasper
Microcrystalline Quartz (SiO2)
Jasper and Yellow Chert (Tumbled)
Microcrystalline Quartz (SiO2)
Chert (Septarian or Nodular variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline quartz (SiO2)
Chert / Yellow Jasper
Silicon Dioxide (SiO2)
Carnelian
Carnelian (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Chert (Jasper)
Silicon Dioxide (SiO2)
Chert (Holey Stone)
Microcrystalline Quartz (SiO2)
Chert (Septarian Nodules / Weathered Silex)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Chalcedony (Yellow/Honey variety)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Hag Stone
Porous sedimentary rock (typically Flint, Chert, or Sandstone) with naturally occurring holes
Hag Stone
Perforated Sedimentary Rock
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Blue Chalcedony
Silicon Dioxide (SiO2)
Jasper
Jasper (SiO2 plus impurities)
Red Jasper
Jasper (SiO2) with Hematite (Fe2O3) inclusions
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (often colloquially called Flint)
Chert (Microcrystalline Quartz, SiO2)
Agate (or Chalcedony)
Silicon Dioxide (SiO2)
Agate
Banded Chalcedony (SiO2)
Chalcedony (Botryoidal/Agate nodule)
Microcrystalline Quartz (SiO2)
Jasper with Agate Inclusions
Silicon Dioxide (SiO2) - variety of Quartz/Chert
Chert (Nodule)
Chert (composed of Microcrystalline Silica/SiO2)
Chert (varieties include Jasper or Flint)
Chert (Microcrystalline Silica, formula: SiO2)