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

Banded Agate (River-worn Pebble) (Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Banded Agate (River-worn Pebble)

Cryptocrystalline Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chalcedony (Agate/Carnelian type) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian type)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Blue Chalcedony (Moonstone-like / Agate) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — gemstone

Blue Chalcedony (Moonstone-like / Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Yellow Chalcedony (Agate Pebble)

Silicon Dioxide (SiO2)

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

Chert (or Flint)

Microcrystalline quartz (SiO2)

Chert / Flint (Silicon dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon dioxide (SiO2)

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

Chert (Jasper)

Cryptocrystalline Quartz (SiO2)

Chert (Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

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

Oolitic Chert

Oolitic Microcrystalline Quartz (SiO2)

Flint (Chert Nodules) (SiO2 (Cryptocrystalline Quartz)) — sedimentary

Flint (Chert Nodules)

SiO2 (Cryptocrystalline Quartz)

Snakeskin Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Snakeskin Agate

Cryptocrystalline Quartz (SiO2)

Chert (Opaline or Microcrystalline Jasper/Chert (SiO2)) — sedimentary

Chert

Opaline or Microcrystalline Jasper/Chert (SiO2)

Chert (and its variety Flint) (Silicon dioxide (SiO2) / Microcrystalline quartz) — sedimentary

Chert (and its variety Flint)

Silicon dioxide (SiO2) / Microcrystalline quartz

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Green Jasper Pebble (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Green Jasper Pebble

Microcrystalline Quartz (Chalcedony), SiO2

Chert (varieties: Flint, Jasper) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Chert (varieties: Flint, Jasper)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Banded Black Onyx (Chalcedony) (Silicon Dioxide (SiO₂)) — mineral

Banded Black Onyx (Chalcedony)

Silicon Dioxide (SiO₂)

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

Chert (Flint / Jasper)

Microcrystalline Quartz (SiO2)

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

Agate

Silicon dioxide (Chalcedony), SiO2

Flint / Chert (Silicon dioxide (Microcrystalline quartz, SiO2)) — sedimentary

Flint / Chert

Silicon dioxide (Microcrystalline quartz, SiO2)

Chert (specifically Flint or Dark Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Dark Chert)

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2) microcrystalline quartz variety) — sedimentary

Jasper

Silicon Dioxide (SiO2) microcrystalline quartz variety

Chert (often called Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Silicon Dioxide (SiO2)

Chert (Nodule) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Nodule)

Chert (Silicon Dioxide, SiO2)

Chert (White/Light Tan) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (White/Light Tan)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Yellow Chert (Jasper)

Silicon Dioxide (SiO2)

Chert (Jasper/River Pebble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/River Pebble)

Silicon Dioxide (SiO2)

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

Chert (Black Chert or Flint)

Silicon Dioxide (SiO2)

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

Chert (Pebble)

Silicon Dioxide (SiO2)

Chert (Chert Nodule) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Chert Nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Agatized/Banded) (Chert (Microcrystalline Silicon Dioxide, SiO2)) — sedimentary

Chert (Agatized/Banded)

Chert (Microcrystalline Silicon Dioxide, SiO2)

Banded Agate (Tumbled) (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate (Tumbled)

Cryptocrystalline Quartz (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Mocha Stone (Dendritic Agate) (Silicon Dioxide (SiO2) with Manganese/Iron inclusions) — sedimentary

Mocha Stone (Dendritic Agate)

Silicon Dioxide (SiO2) with Manganese/Iron inclusions

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Yellow Jasper (Chalcedony (SiO2 with iron oxide inclusions)) — mineral

Yellow Jasper

Chalcedony (SiO2 with iron oxide inclusions)

Chert (Jasper/Agate variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate variant)

Microcrystalline Quartz (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO2)

Banded Agate (Pink Chalcedony) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Banded Agate (Pink Chalcedony)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chalcedony (Agate/Chert variety) (Silicon Dioxide (SiO₂)) — mineral

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO₂)