Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary rock (cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Chert (Brown variety / Common Jasper)
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Jaspery variety)
Microcrystalline Quartz (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
Chert Pebble Map
Microcrystalline Quartz (SiO2)
Quartz pebble
Silicon Dioxide (SiO2)
Chert (and Flint variant)
Microcrystalline Quartz (SiO2)
Chert (Brecciated Chert)
Silicon Dioxide (SiO2)
Chert (Chert / Flint)
Silicon dioxide (SiO2) - Microcrystalline quartz
Chert / Flint Nodule
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Chert Pebble with Quartz Veins
Microcrystalline Quartz (SiO2)
Chert (Flint) River Pebble
Microcrystalline Quartz (SiO2)
Jasper Pebble
Microcrystalline Quartz (SiO2)
Banded Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (vuggy/nodular)
Microcrystalline Quartz (SiO2)
Yellow Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Chert (Silica, SiO2)
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Chert (Flint Nodule)
Microcrystalline and Cryptocrystalline Quartz (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Geode (unopened)
Quartz-filled Geode (SiO2)
Chalcedony
Silicon Dioxide (SiO2)
Quartz (likely a form of massive or vein quartz)
Quartz (SiO₂)
Chert (Quartzite Pebble)
Microcrystalline Quartz (SiO2)
Chert (Quartz Variety)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper/Flint)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
Lake Superior Agate
Cryptocrystalline Quartz (SiO2) with iron impurities
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper
Microcrystalline Quartz (SiO2)
Chert / Chalcedony Nodule
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Quartz-veined Limestone
Sedimentary limestone with hydrothermal quartz/calcite veins (CaCO3 / SiO2)
Chalcedony (River or Beach Pebbles)
Chalcedony (Silicon Dioxide, SiO2)
Quartz (Jasper / Chert)
Silicon Dioxide (SiO2)
Chert (Common Opal/Jasper variety)
Microcrystalline Quartz (SiO2) with hydration
Chert (Flint)
Microcrystalline quartz (SiO2)