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

Jasper (Silicon Dioxide (SiO2), Microcrystalline Quartz) — sedimentary

Jasper

Silicon Dioxide (SiO2), Microcrystalline Quartz

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

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Brecciated Chert with Quartz Veining (Microcrystalline Quartz (SiO2) Breccia) — sedimentary

Brecciated Chert with Quartz Veining

Microcrystalline Quartz (SiO2) Breccia

Red Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

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

Chert (Jasper variation)

Silicon Dioxide (SiO2)

Chert (Blue-Gray Chert) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Blue-Gray Chert)

Microcrystalline quartz (SiO2)

Red jasper (likely tumbled) (Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides) — mineral

Red jasper (likely tumbled)

Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides

Chert (Common Opal/Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Common Opal/Jasper variant)

Silicon Dioxide (SiO2)

Chert (Silica Pebble) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Silica Pebble)

Chert (Microcrystalline Quartz, SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Tumbled Agate (Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Tumbled Agate

Cryptocrystalline Silicon Dioxide (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Yellow Chalcedony (SiO2 (Silicon Dioxide)) — mineral

Yellow Chalcedony

SiO2 (Silicon Dioxide)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Yellow Agate (Banded Chalcedony) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Agate (Banded Chalcedony)

Silicon Dioxide (SiO2)

Chalcedony (Common Opal or Agate variant) (Silicon dioxide (SiO2) with trace hydration) — mineral

Chalcedony (Common Opal or Agate variant)

Silicon dioxide (SiO2) with trace hydration

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

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

Flint

Chert (Silicon dioxide, SiO2)

Chert (Chalky Flint Node) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

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

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

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

Banded Chert

Chert (Silicon Dioxide, SiO2)

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

Chert (Jasper/Agate mix)

Microcrystalline Quartz (SiO2)

Chalcedony (specifically Agate and Carnelian variety) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Chalcedony (specifically Agate and Carnelian variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

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

Chert (Chert Nodule with Cortex)

Microcrystalline Quartz (SiO2)

Red Jasper (Quartz (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Quartz (SiO2) with iron oxide inclusions

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

Chert (Yellow Jasper/Flint)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

White Agate / Chalcedony (Silicon Dioxide (SiO2)) — gemstone

White Agate / Chalcedony

Silicon Dioxide (SiO2)

Chert (Field Stone/Pebble) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Field Stone/Pebble)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Yellow Jasper (Cryptocrystalline Quartz (SiO2)) — sedimentary

Yellow Jasper

Cryptocrystalline Quartz (SiO2)

Chert (specifically a Chert Nodule or Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically a Chert Nodule or Flint)

Cryptocrystalline Quartz (SiO2)

Chert (Iron-rich or Jasperoid) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-rich or Jasperoid)

Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Agate variety) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate variety)

Cryptocrystalline Quartz (SiO2)

Elephant Skin Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Elephant Skin Jasper

Microcrystalline Quartz (SiO2)

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

Chert (Yellow Jasper/Flint)

Silicon Dioxide (SiO2)

Jasper (Jasper (Silica-rich Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Jasper (Silica-rich Microcrystalline Quartz, SiO2)

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

Chert (Flint variety)

Chert (SiO2)

Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Agate

Cryptocrystalline Quartz (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline Quartz (SiO2)