Agate Geode
Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.
Agate Geode
Cryptocrystalline Quartz (SiO2)
Quartz (Microcrystalline/Agate)
Silicon Dioxide (SiO2)
Chalcedony (variations like Agate or Jasper)
Chalcedony (SiO₂ - microcrystalline quartz)
Chert
Chert (SiO2)
Chert
Silicon dioxide (SiO2)
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
Quartz Pebble (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
Chert
Channery Chert (Microcrystalline Quartz)
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Ferruginous Quartz (Iron-stained Quartzite)
Silicon Dioxide (SiO2) with iron oxide inclusions
Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
River Jasper (Chert/Chalcedony mix)
Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions
Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (Chert Nodule with Chalky Cortex)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper (Cream/Yellow variety)
Silicon dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert
Chert (SiO2, Silicon Dioxide)
Snakeskin Jasper
Microcrystalline Quartz (SiO2) with iron inclusions
Chert
Chert (Microcrystalline Quartz, SiO2)
Yellow Jasper
Cryptocrystalline Quartz (SiO2 with Iron Hydroxide inclusions)
Banded Quartzite
Quartzite (primarily SiO2)
Orca Agate
Chalcedony (Microcrystalline Quartz, SiO2)
Jasper River Stone
Silicon Dioxide (SiO2) with iron oxide inclusions
Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)
Chert (microcrystalline quartz)
Dyed Blue Agate Geode Slice
Chalcedony (Silicon Dioxide, SiO2)
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
Fancy Jasper (Agate/Chert mix)
Silicon Dioxide (SiO2) with impurities
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
Chert
Chert (Microcrystalline Quartz, SiO2)
Jasper
Jasper (Cryptocrystalline Quartz, SiO2)
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Chert (often called Flint when dark)
Sedimentary cryptocrystalline quartz (SiO2)
Zebra Jasper
Tectonized Jasper (Silicon Dioxide, SiO2)
Jasper with Cinnabar (Dragon Blood Jasper variant)
Silicon Dioxide with Mercury Sulfide (SiO2 + HgS)
Yellow Jasper
Tectosilicates (SiO2) with Goethite/Iron oxide inclusions
Chert (often called Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Green variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Zebra Jasper (Zebra Stone)
Tumbled Silicon Dioxide (SiO2) with impurities
Chert (Flint)
Silicon Dioxide (SiO2)