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

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Iron-Stained Quartz (Silicon Dioxide (SiO2) with Iron Oxide impurities) — mineral

Iron-Stained Quartz

Silicon Dioxide (SiO2) with Iron Oxide impurities

Flint (Cryptocrystalline quartz (SiO2)) — sedimentary

Flint

Cryptocrystalline quartz (SiO2)

Yellow Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2)

Chalcedony Geode Fragment (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony Geode Fragment

Microcrystalline Quartz (SiO2)

Polished brown jasper pebble (Jasper, an opaque microcrystalline variety of chalcedony (SiO₂), commonly containing iron oxides and other impurities) — mineral

Polished brown jasper pebble

Jasper, an opaque microcrystalline variety of chalcedony (SiO₂), commonly containing iron oxides and other impurities

Agate Nodule (Silicon Dioxide (Chalcedony / Quartz), SiO2) — sedimentary

Agate Nodule

Silicon Dioxide (Chalcedony / Quartz), SiO2

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Quartz Vein in Host Rock (Silicon dioxide (SiO2) veining in silicate matrix) — sedimentary

Quartz Vein in Host Rock

Silicon dioxide (SiO2) veining in silicate matrix

River Pebble / Chert Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

River Pebble / Chert Pebble

Microcrystalline Quartz (SiO2)

Flint or chert (Microcrystalline quartz (SiO₂), likely gray chert/flint) — sedimentary

Flint or chert

Microcrystalline quartz (SiO₂), likely gray chert/flint

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

Chert (Red Jasper)

Microcrystalline Quartz (SiO2)

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2) with impurities, microcrystalline quartz) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities, microcrystalline quartz

Red Jasper (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2)

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide (Fe2O3) inclusions

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

Chert (Jasper/Agate variety)

Silicon Dioxide (SiO2)

Chert / Flint Pebble (Chert (SiO2)) — sedimentary

Chert / Flint Pebble

Chert (SiO2)

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

Chert / Jasper / Agate (Chalcedony Group)

Microcrystalline Quartz (SiO2)

Chalcedony (Grey/White Agate) (Silicon Dioxide (SiO₂)) — mineral

Chalcedony (Grey/White Agate)

Silicon Dioxide (SiO₂)

Red Jasper or Ferruginous Chert (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper or Ferruginous Chert

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartz in Matrix (Silicon Dioxide (SiO2) in host rock matrix) — mineral

Quartz in Matrix

Silicon Dioxide (SiO2) in host rock matrix

Red jasper (likely tumbled or polished) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides) — mineral

Red jasper (likely tumbled or polished)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides

Likely white quartz or quartz-rich pebble (Quartz (silicon dioxide, SiO₂), possibly a small polished/tumbled specimen) — mineral

Likely white quartz or quartz-rich pebble

Quartz (silicon dioxide, SiO₂), possibly a small polished/tumbled specimen

Banded Calcite (often commercially sold as 'Mexican Onyx' or 'Honey Onyx') (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often commercially sold as 'Mexican Onyx' or 'Honey Onyx')

Calcite (Calcium Carbonate, CaCO3)

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

Green Chert (Jasper / Flint)

Silicon Dioxide (SiO2)

Picture Jasper (Opaque microcrystalline quartz (SiO2 with iron oxide impurities)) — sedimentary

Picture Jasper

Opaque microcrystalline quartz (SiO2 with iron oxide impurities)

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

Agate

Silicon dioxide (Chalcedony), SiO2

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

Tumbled brown chalcedony/jasper

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony or jasper

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Red Jasper (Silicon Dioxide (Quartz variety), SiO2) — mineral

Red Jasper

Silicon Dioxide (Quartz variety), SiO2

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

Red Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Banded Agate (Silicon dioxide (SiO2) - variety of Chalcedony) — sedimentary

Banded Agate

Silicon dioxide (SiO2) - variety of Chalcedony

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Amethyst Geode (Amethyst (Silicon Dioxide), Formula: SiO2) — mineral

Amethyst Geode

Amethyst (Silicon Dioxide), Formula: SiO2

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

Red Jasper (Jasper)

Silicon Dioxide (SiO₂)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Red Jasper (possibly banded Jaspilite) (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)) — sedimentary

Red Jasper (possibly banded Jaspilite)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Agate / Chalcedony (Silicon dioxide (SiO2)) — mineral

Agate / Chalcedony

Silicon dioxide (SiO2)