Chert (Polished/Worn)
Microcrystalline quartz (SiO2)
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Chert (Polished/Worn)
Microcrystalline quartz (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Agate (specifically a small Chalcedony nodule)
Agate (Cryptocrystalline variety of Quartz, SiO2)
Chert (Jasper influence)
Microcrystalline Quartz (SiO2)
Flint
Microcrystalline quartz (SiO2)
Banded Agate (specifically Botswana Agate or Water-line Agate)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Flint Pebble
Sedimentary cryptocrystalline quartz (SiO2)
Chert Nodule
Microcrystalline Quartz (SiO2)
Quartz (Milky or Cloudy)
Silicon Dioxide (SiO2)
Flint
Microcrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Banded Agate (specifically Carnelian Agate slice)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Chalk-associated Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Black Onyx
Silicon dioxide (SiO2)
Fancy Jasper
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
Chert / Flint
Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)
Yellow Jasper
Cryptocrystalline Quartz (SiO2) with iron inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with iron oxide and other mineral impurities
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Chert / Flint
Microcrystalline quartz (SiO2)
Carnelian
Carnelian (Silicon Dioxide, SiO2)
Chert / Flint Nodular Fragment
Microcrystalline quartz (SiO2)
Chert (Nodule)
Microcrystalline quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Dalmatian Stone
Aplite (often incorrectly called Dalmatian Jasper)
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Chert (Microcrystalline Quartz, SiO2)
Rose Quartz
Quartz (SiO₂), specifically a variety of Quartz
Chert (Smoky variety)
Microcrystalline Quartz (SiO2)
Chrysoprase
Chrysoprase (a variety of Chalcedony, SiO₂)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
Agate (specifically a Blue Agate Geode Slice)
Chalcedony (cryptocrystalline variety of Quartz); SiO2
Banded Agate (specifically Eye Agate / Chalcedony)
Agate (Cryptocrystalline variety of Quartz, SiO2)
Flint / Chert Pebble
Cryptocrystalline quartz (SiO2)