Rock Identifier

Category

Sedimentary (Cryptocrystalline Silica)

Browse sedimentary (cryptocrystalline silica) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Cryptocrystalline Silica) in the encyclopedia

Quartzite Sandstone

Quartzite Sandstone

Tripolite

Chert

Kambaba Jasper

Tintenbar Opal

Diatomite

Ironstone

Landscape Agate

Landscape Agate

Tube Agate

Sweetwater Agate

Sweetwater Agate

Frost Agate

Coldwater Agate

Chert (Yellow Jasper) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper)

Cryptocrystalline Quartz (SiO2)

Beach Agate / Jasper Pebble (Cryptocrystalline Quartz (SiO2)) — sedimentary

Beach Agate / Jasper Pebble

Cryptocrystalline Quartz (SiO2)

River Agate (Chert/Chalcedony) (Cryptocrystalline Quartz (SiO2)) — sedimentary

River Agate (Chert/Chalcedony)

Cryptocrystalline Quartz (SiO2)

Chert / Flint (River Pebble) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint (River Pebble)

Cryptocrystalline Quartz (SiO2)

Chert (Chert / Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chert / Flint)

Microcrystalline Quartz (SiO2)

Chert Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble

Microcrystalline Quartz (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Agate / Chalcedony Geode (Silicon Dioxide (SiO2)) — sedimentary

Agate / Chalcedony Geode

Silicon Dioxide (SiO2)

Geode / Fossilized Gastropod or Shell Cast (Silicon dioxide (Quartz) replacement / fossil mold) — sedimentary

Geode / Fossilized Gastropod or Shell Cast

Silicon dioxide (Quartz) replacement / fossil mold

Chert (with Quartz) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Quartz)

Microcrystalline Quartz (SiO2)

Chert (Flint variety) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert Concretion / Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Concretion / Nodule

Microcrystalline Quartz (SiO2)

Flint (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Flint

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Black Onyx (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Black Onyx

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (Yellow Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Chert / Flint Nodule (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint Nodule

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / Lake Superior Agate (Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert / Lake Superior Agate

Cryptocrystalline Silicon Dioxide (SiO2)

Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Flint (Silicon dioxide (SiO2) - cryptocrystalline quartz) — sedimentary

Flint

Silicon dioxide (SiO2) - cryptocrystalline quartz

Chalcedony (Agate/Seashell replacement) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Chalcedony (Agate/Seashell replacement)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Agate (Chalcedony SiO2) — mineral

Agate

Chalcedony SiO2

Chert (Flint) (Chert (Microcrystalline or cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Flint)

Chert (Microcrystalline or cryptocrystalline Silica, SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Yellow Chert (Yellow Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Chert (Yellow Jasper)

Silicon Dioxide (SiO2)

Chert (Chalcedony/Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chalcedony/Flint)

Microcrystalline Quartz (SiO2)

Quartz pebble (Agate / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz pebble (Agate / Chalcedony)

Silicon Dioxide (SiO2)

Agate (Chalcedony (SiO2) with impurities) — sedimentary

Agate

Chalcedony (SiO2) with impurities

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Yellow Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (Agate)

Silicon Dioxide (SiO2)

Flint (Microcrystalline quartz (SiO2)) — sedimentary

Flint

Microcrystalline quartz (SiO2)

Quartz (Chert/Chalcedony variety) (Silicon Dioxide (SiO2)) — sedimentary

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

Picture Jasper (SiO2) — Mineral/Sedimentary

Picture Jasper

SiO2

Mineral/Sedimentary

Chert (varieties include Flint and Jasper) (Silicon dioxide (SiO2)) — sedimentary

Chert (varieties include Flint and Jasper)

Silicon dioxide (SiO2)

Chert (Flint) (Chert (̑SiO2)) — sedimentary

Chert (Flint)

Chert (̑SiO2)

Chert / Flint (Microcrystalline quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline quartz (SiO2)

Banded Chert / Jasper Cognation (Microcrystalline Quartz (SiO2) with Hematite/Limonite) — sedimentary

Banded Chert / Jasper Cognation

Microcrystalline Quartz (SiO2) with Hematite/Limonite

Banded Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline Quartz (SiO2)

Chert (specifically Jasper or Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Flint)

Cryptocrystalline Quartz (SiO2)

Chert (Jasper variety) (Cryptocrystalline quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Cryptocrystalline quartz (SiO2)

Chert (varietal: Flint Pitted Pebble) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (varietal: Flint Pitted Pebble)

Cryptocrystalline Quartz (SiO2)