Chert (Flint/Jasper variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Chert (Flint/Jasper variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Yellow Chert (River Stone/Pebble)
Chert (Cryptocrystalline Quartz, SiO2)
Orca Agate
Chalcedony (Microcrystalline Quartz, SiO2)
Jasper Breccia
Brecciated Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)
Greenstone
Greenschist / Greenstone (contains epidote, chlorite, and actinolite)
Chert (specifically Red Chert / Flint)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (specifically Milky Quartz/Quartzite)
Silicon Dioxide (SiO2)
Chert (specifically White Chert or Novaculite)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Granite Pegmatite with Tourmaline and Muscovite
Pegmatite (Feldspar: KAlSi3O8, Quartz: SiO2, Schorl: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH))
Banded Chert
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Picture Jasper
Silicon dioxide (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Chert Pebble
Microcrystalline Quartz (SiO2)
Chert (varieties include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Pink Tumbled Agate
Microcrystalline Quartz (SiO2)
Flint
SiO2 (Cryptocrystalline Quartz)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Quartz Mineral Specimens
Quartz (Silicon Dioxide, SiO2)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Chert (Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Geode (Unopened)
Quartz/Chalcedony concretion
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Blue Quartz (specifically Dumortierite Quartz)
SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Tumbled red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
Chert (variant of Flint)
Chert (SiO2)
Chert (Nodular)
Chert (SiO2 - Microcrystalline Quartz)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Yellow Chalcedony (Carnelian / Agate Pebbles)
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)