Chert (often called Flint in this variation)
Silicon dioxide (SiO2) - Microcrystalline quartz
Category
Browse sedimentary (silica rich mineral variety) specimens identified by the Rock Identifier community.
Chert (often called Flint in this variation)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert (and its variety Flint)
Silicon dioxide (SiO2) / Microcrystalline quartz
Chert (Flint)
Chert (SiO2)
Jasper
Silicon Dioxide (SiO2) with impurities
Yellow Calcite (Banded Calcite)
Calcium Carbonate (CaCO3)
Honey Calcite
Calcium Carbonate (CaCO3)
Chert (Yellow variety / Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Gravel pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Tripolitic Chert / Flint Nodules)
Microcrystalline Quartz (SiO2)
Gray Quartz (Tumbled)
Silicon Dioxide (SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)
Green Banded Chert (Agate/Jasper)
Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite
Jasper
Silicon Dioxide (SiO2) with impurities
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) - variety of Chalcedony
Chert
Chert (Microcrystalline Silica, SiO2)
Jasper
Silicon dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Common Chert)
Cryptocrystalline Quartz (SiO2)
Yellow Chalcedony (Agate/Chert)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Blue Calcite
Calcium Carbonate (CaCO3)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Leopard Skin Jasper
Silicon Dioxide (SiO2) with various inclusions
Chert (often called Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (Jasper/Chalcedony variety)
Silicon Dioxide (SiO2)
Chert and Chalcedony
Cryptocrystalline Quartz (SiO2)
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Green Aventurine and Clear Quartz
Aventurine (variety of Quartz - SiO2) and Quartz (SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2) with impurities
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
Chert / Flint
Chert (Cryptocrystalline Silica, SiO2)
Jasper
Silicon Dioxide (SiO2) with iron and magnesium inclusions
Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartz (likely Jasper or Chert variety)
Quartz (SiO₂)
Red Jasper (with inclusions)
Silicon Dioxide (SiO2) with Hematite impurities
Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)
Calcium Carbonate (CaCO3)
Jasper with Quartz Druzy
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2 with iron inclusions)
Jasper
Silicon dioxide (SiO2)