Rock Identifier

Category

Sedimentary (Formed From Silica Deposits)

Browse sedimentary (formed from silica deposits) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Formed From Silica Deposits) in the encyclopedia

Geyserite

Quartzite Sandstone

Quartzite Sandstone

Turbidite

Kambaba Jasper

Tripolite

Sinter

Loess

Ignimbrite

Quartzite

Chert

Coal

Silcrete

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

Red Chert (Jasper)

Cryptocrystalline Quartz (SiO2) with iron oxide inclusions

Quartzite (River Stone) (Quartzite (mainly SiO2 with iron oxide staining)) — metamorphic

Quartzite (River Stone)

Quartzite (mainly SiO2 with iron oxide staining)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Petrified Wood (Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)) — sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)

Chert (specifically tan/pink variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically tan/pink variety)

Silicon Dioxide (SiO2)

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

Chert (Pink Chert/Jasper)

Cryptocrystalline Quartz (SiO2)

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

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

White Agate / Chalcedony

Silicon Dioxide (SiO2)

Jasper (Silicon dioxide (SiO2)) — Sedimentary / Mineral

Jasper

Silicon dioxide (SiO2)

Sedimentary / Mineral

Chert (Cherty Limestone or Flint) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Cherty Limestone or Flint)

Microcrystalline Silica (SiO2)

Red Agate Sphere (Chalcedony (SiO2 with iron oxide inclusions)) — sedimentary

Red Agate Sphere

Chalcedony (SiO2 with iron oxide inclusions)

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

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Jasper (Jasper (SiO2 with iron inclusions)) — sedimentary

Jasper

Jasper (SiO2 with iron inclusions)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Chert (Jasper)

Silicon Dioxide (SiO2)

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

Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Chert (Jasper/Agate variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Jasper/Agate variety)

Microcrystalline quartz (SiO2)

Yellow Chert (Chert / Jasper) (Silicon Dioxide (SiO2 / Microcrystalline Quartz)) — sedimentary

Yellow Chert (Chert / Jasper)

Silicon Dioxide (SiO2 / Microcrystalline Quartz)

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

Chert (and Flint)

Silicon Dioxide (SiO2)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (and Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (and Chalcedony)

Microcrystalline Quartz (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Yellow/Brown) (Silicon Dioxide (SiO2) with impurities) — mineral

Jasper (Yellow/Brown)

Silicon Dioxide (SiO2) with impurities

Jasper (Iron-rich) (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities) — sedimentary

Jasper (Iron-rich)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities

Quartz geode (Microcrystalline quartz (SiO₂), commonly with chalcedony and possible calcite inclusions) — mineral

Quartz geode

Microcrystalline quartz (SiO₂), commonly with chalcedony and possible calcite inclusions

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

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

Chert (Chalcedony/Jasper)

Microcrystalline Quartz (SiO2)

Magnetite (potentially Lodestone) (Magnetite (Iron(II,III) oxide, Fe3O4)) — mineral

Magnetite (potentially Lodestone)

Magnetite (Iron(II,III) oxide, Fe3O4)

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

White Agate (Chalcedony)

Agate (Silicon Dioxide - SiO2)

Jasper (Silicon Dioxide (SiO2) with impurities) — mineral

Jasper

Silicon Dioxide (SiO2) with impurities

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

Chert (Chert Nodule with Cortex)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert / Yellow Jasper

Silicon Dioxide (SiO2)

Megalodon Shark Tooth Fossil (Otodus megalodon) — sedimentary

Megalodon Shark Tooth Fossil

Otodus megalodon