Chert (and Flint)
Silicon dioxide (SiO2) - Microcrystalline quartz
Category
Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.
Chert (and Flint)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert (Yellow Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (White-Tan variety)
Silicon dioxide (SiO2) / Microcrystalline Quartz
Jasper / Chert (River Pebble)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Jasper (variety of Chert/Chalcedony, formula SiO2)
Iron-stained Quartzite / Chert
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Zebra Jasper
Silicon Dioxide (SiO2) with impurities; typically a form of Chalcedony/Microcrystalline Quartz
Amethyst and Agate Geode Section
Silicon Dioxide (SiO2) - Crystalline Quartz and Chalcedony
Agate Geode
Silicon Dioxide (SiO2) - Banded Chalcedony
Purple Jasper
Silica-rich Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper with Quartz Vein
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper focus)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Banded Chert (Agate-like Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert / Chalcedony Nodules
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Flint variety)
Chert (Microcrystalline or Cryptocrystalline Quartz), SiO2
Green Chert (Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Polished River Jasper
Silicon Dioxide (SiO2) with iron and other mineral inclusions
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and clay impurities
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Banded Chert (River Stone)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper/River Stone)
Silicon dioxide (SiO2) - Microcrystalline quartz
Red Siltstone
Siltstone (primarily quartz and feldspar sized 0.0039 to 0.0625 mm)
White Chalcedony (Agate)
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2) with impurities
Jasper with Iron Staining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Yellow Chert (Microcrystalline Quartz)
Chert / SiO2 (Silicon Dioxide)
Red Jasper (Brecciated Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz Veined Siltstone or Graywacke
Clastic Sedimentary Rock with Quartz (SiO2) veining
Jasper
Silicon dioxide (SiO2)
Chert (often called Flint in this variation)
Silicon dioxide (SiO2) - Microcrystalline quartz
Fancy Jasper
Silicon Dioxide (SiO2) with iron and organic inclusions
Chalcedony
Cryptocrystalline Quartz (SiO2)
Red Jasper
Jasper (Silica/Microcrystalline Quartz with Hematite inclusions), SiO2
Chert (Light Grey / Flint variant)
Cryptocrystalline Quartz (SiO2)
Gray Limestone
Carbonate rock (CaCO3)
Chert (Jasper/Chalcedony)
Silicon dioxide (SiO2) - Microcrystalline quartz