Chert
Chert (Microcrystalline Quartz, SiO2)
Category
Browse mineral or sedimentary (if chert) specimens identified by the Rock Identifier community.
Chert
Chert (Microcrystalline Quartz, SiO2)
Banded Iron Formation
Banded Iron Formation (BIF)
Chert
Silicon dioxide (Microcrystalline Quartz, $SiO_2$)
Quartz
Silicon Dioxide (SiO2)
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
Chert (Chert Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Iron-stained weathered stone (tentative)
Undetermined; possibly weathered iron-rich basalt or concretion
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Chalcedony-rich sedimentary rock)
Cryptocrystalline Quartz (SiO2)
Brecciated Jasper
Silicon Dioxide (SiO2) with iron impurities
Basalt with Chert or Jasper Inclusion
Igneous basalt / sedimentary chert nodule
Chert
Chert (Silica: SiO2)
Green Chert
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (with Drusy Quartz Pocket)
Silicon Dioxide (SiO2)
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Chert / Flint Pebble
Chert (SiO2)
Chert (Flint variety)
Chert (SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Brown Marble
Metamorphic Limestone (CaCO3)
Chert (Jasper/Flint variation)
Chert (SiO2)
Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
Flint
SiO2 (Microcrystalline Quartz / Chert)
Chert Nodule
Microcrystalline Quartz (SiO2)
Chert (and Chert Breccia)
Silicon Dioxide (SiO2)
Sandstone and River Pebbles
Sedimentary Rock (Sandstone / Quartzite / Chert)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert Pebble
Chert (Microcrystalline Quartz, SiO2)
Chert (Chert / Flint)
Silicon Dioxide (SiO2)
Black Chert
Chert (microcrystalline quartz)
Banded Chert / Agate Pebble
Silicon Dioxide (SiO2)
Chert (Flint variety)
Chert (SiO2)
Chert
Siliceous sedimentary rock (predominantly microcrystalline quartz, SiO2)
Hag Stone
Perforated sedimentary rock (typically flint, chert, or limestone)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Unidentified Dark Mineral or Rock
Indeterminate (Likely Silicon Dioxide or Carbon-based)
Brecciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
Chert (specifically Green Chert/Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (specifically Banded Chert or Flint)
Microcrystalline Quartz (SiO2)
Chert (Nodular Chert)
Microcrystalline Silica (SiO2)
Quartz (Chert / Agate / Chalcedony)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)