Chert (Common Opal/Agate mixture)
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (microcrystalline silicate) specimens identified by the Rock Identifier community.
Chert (Common Opal/Agate mixture)
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert with Quartz Veins
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (often called Jasper or River Pebble)
Microcrystalline Quartz (SiO2)
Chert (Flint/Jasper)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Yellow or Brown Jasper)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Novaculite Variety)
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
Chert (White Flint)
Microcrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Blue Chalcedony
Cryptocrystalline Silicon Dioxide (SiO2)
Carnelian (Red Agate)
Silicon Dioxide (SiO2)
Carnelian (Red Chalcedony)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Agate (Moss or Green Agate)
Silicon Dioxide (SiO2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Green Chalcedony (likely Green Agate or Chrysoprase)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite or Limonite)
Carnelian
Carnelian (SiO2 - Chalcedony colored by Iron Oxide)
Chert (Iron-stained)
Chert (Silicon Dioxide, SiO2)
Chalcedony (Agate Nodules)
Silicon Dioxide (SiO2)
Carnelian Agate
Carnelian (Chalcedony / Silicon Dioxide SiO2)
Blue Chalcedony (Agate)
Silicon Dioxide (SiO2)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Common Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartz (Chert/Flint variety)
Silicon Dioxide (SiO2)
Flint with Fossil Inclusion
Cryptocrystalline quartz (SiO2) enclosing fossilized organic remains
Red Jasper
Jasper (variety of Chalcedony), SiO2