Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Category
Sedimentary (Secondary Classification: Cryptocrystalline Quartz)
Browse sedimentary (secondary classification: cryptocrystalline quartz) specimens identified by the Rock Identifier community.
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Blue Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Yellow Chalcedony (Agate/Chert)
Cryptocrystalline Quartz (SiO2)
mineral
Chert
Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (with secondary weathering/concretion)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Quartz-veined Siltstone
Siltstone with Quartz (SiO2) veins
sedimentary
White Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chert (with Quartz Veining)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Graywacke Pebble with Quartz Vein
Argillaceous Sandstone (Graywacke)
sedimentary
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Ferruginous Quartz (Carnelian-tinted Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Chert (variations include Flint or Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
sedimentary
Yellow Quartz (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
sedimentary
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony Geode Fragment
Cryptocrystalline Quartz (SiO2)
mineral
Chalcedony (Agate/Quartz variety)
Cryptocrystalline Quartz (SiO2)
mineral
Brown Chert
Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
mineral
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Yellow Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony (Quartz Pebble)
Cryptocrystalline Quartz (SiO2)
mineral
Sandstone (with Quartz veining)
Arenite (primarily SiO2)
sedimentary
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Chert (Jasper-like)
SiO2 (Cryptocrystalline Quartz)
Sedimentary
Chert (River Pebble)
Cryptocrystalline Quartz (SiO2)
sedimentary
Agate Geode
Chalcedony (SiO2 - Silicon Dioxide)
sedimentary (secondary mineral formation)
Quartz Geode
Quartz (Silicon Dioxide, SiO2) Geode
sedimentary
Chert (River Siltstone/Quartzite)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral