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

Ignimbrite

Loess

Quartzite

Chert

Coal

Silcrete

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Jasper (Liver Jasper or Chocolate Jasper) (Jasper (Silicate - SiO2)) — sedimentary

Jasper (Liver Jasper or Chocolate Jasper)

Jasper (Silicate - SiO2)

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

Chert and Chalcedony

Cryptocrystalline Quartz (SiO2)

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

Chert / Flint Nodules

Cryptocrystalline Quartz (SiO2)

Tan chert or silicified limestone fragment (Microcrystalline quartz (SiO₂), possibly calcareous chert) — sedimentary

Tan chert or silicified limestone fragment

Microcrystalline quartz (SiO₂), possibly calcareous chert

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Common Opal (Green Opal) (Hydrated Silicon Dioxide (SiO2·nH2O)) — mineral

Common Opal (Green Opal)

Hydrated Silicon Dioxide (SiO2·nH2O)

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

Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Magnesite or Howlite (dyed or naturally patterned) (Magnesium carbonate (MgCO3) or Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Magnesite or Howlite (dyed or naturally patterned)

Magnesium carbonate (MgCO3) or Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Rhodonite-bearing rock (Rhodonite (MnSiO₃), likely in a manganese-rich matrix; visual identification is uncertain) — metamorphic

Rhodonite-bearing rock

Rhodonite (MnSiO₃), likely in a manganese-rich matrix; visual identification is uncertain

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Brown Jasper (Silicon Dioxide (SiO2)) — sedimentary

Brown Jasper

Silicon Dioxide (SiO2)

Weathered chert or chalcedony nodule (Microcrystalline quartz (SiO₂), possibly silicified limestone or agate-like chalcedony) — sedimentary

Weathered chert or chalcedony nodule

Microcrystalline quartz (SiO₂), possibly silicified limestone or agate-like chalcedony

Quartz Pebble (likely Chalcedony or Quartzite) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (likely Chalcedony or Quartzite)

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Yellow Quartz / Chalcedony Pebble (SiO2 (Silicon Dioxide)) — sedimentary

Yellow Quartz / Chalcedony Pebble

SiO2 (Silicon Dioxide)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Agate/Jasper pebble) (Silicon dioxide (SiO2)) — mineral

Quartz (Agate/Jasper pebble)

Silicon dioxide (SiO2)

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

Jasper (Iron-rich Chert) (Silicon Dioxide (SiO2) with impurities of Hematite or Goethite) — sedimentary

Jasper (Iron-rich Chert)

Silicon Dioxide (SiO2) with impurities of Hematite or Goethite

Tumbled jasper or chalcedony (Microcrystalline quartz (SiO₂), probably iron-stained jasper/chalcedony) — mineral

Tumbled jasper or chalcedony

Microcrystalline quartz (SiO₂), probably iron-stained jasper/chalcedony

Clear quartz chips (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz chips

Quartz (silicon dioxide, SiO₂)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Dinosaur Claw Fossil (Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)) — fossil

Dinosaur Claw Fossil

Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Green Chert (Jasper) (Microcrystalline Quartz (SiO2) with chlorite/epidote inclusions) — sedimentary

Green Chert (Jasper)

Microcrystalline Quartz (SiO2) with chlorite/epidote inclusions

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Chert (Grey-Green Var.) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Grey-Green Var.)

Silicon Dioxide (SiO2)

Red Jasper (Silicon dioxide (SiO2) with iron oxide (Hematite) inclusions) — sedimentary

Red Jasper

Silicon dioxide (SiO2) with iron oxide (Hematite) inclusions

Fossilized Shark Tooth (Sand Tiger) (Carcharias sp. (Fossilized Tooth)) — fossil

Fossilized Shark Tooth (Sand Tiger)

Carcharias sp. (Fossilized Tooth)

Picture Jasper (Silicon Dioxide (SiO2)) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2)

Quartz (Orthoquartzite) (Silicon Dioxide (SiO2)) — sedimentary

Quartz (Orthoquartzite)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Carnelian (Orange Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Orange Chalcedony)

Silicon Dioxide (SiO2)

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

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Red Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2)

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

Chert / Chalcedony

Silicon Dioxide (SiO2)

Kaolin (China Clay) (Kaolinite [Al2Si2O5(OH)4]) — sedimentary

Kaolin (China Clay)

Kaolinite [Al2Si2O5(OH)4]