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

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

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Onyx (Black Onyx) (Onyx (Silicon Dioxide, SiO2)) — mineral

Onyx (Black Onyx)

Onyx (Silicon Dioxide, SiO2)

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

Chert / Chalcedony

Silicon Dioxide (SiO2)

Sandstone Geode (Sedimentary Geode (Silica/Calcite composition)) — sedimentary

Sandstone Geode

Sedimentary Geode (Silica/Calcite composition)

Chert (often referred to as Flint) (Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (often referred to as Flint)

Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)

Chalcedony (Botryoidal or Geode form) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Botryoidal or Geode form)

Silicon Dioxide (SiO2)

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

Chert Arrowhead (Jasper)

Chert (Cryptocrystalline Quartz, SiO2)

Banded Agate (Cryptocrystalline variety of Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline variety of Quartz (SiO2)

Carnelian (Carnelian (Cryptocrystalline Quartz, SiO2)) — mineral

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

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

Yellow Chert (Yellow Jasper)

Silicon dioxide (SiO2)

Chert (Arrowhead Fragment) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead Fragment)

Microcrystalline Quartz (SiO2)

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

Yellow Quartz / Chalcedony Pebble

Silicon Dioxide (SiO2)

Chert (Concretion or Nodular Variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Concretion or Nodular Variety)

Microcrystalline Quartz (SiO2)

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

Jasper

Silicon dioxide (SiO2)

Mineral / Sedimentary

Tumbled Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Tumbled Agate

Silicon Dioxide (Chalcedony variety), SiO2

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

Chalcedony (Chert/Flint)

Silicon Dioxide (SiO2)

Chert (with Limestone matrix) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Limestone matrix)

Microcrystalline Quartz (SiO2)

Chalcedony (Botryoidal) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Botryoidal)

Silicon Dioxide (SiO2)

Geode Nodules / Agate Chert (Silicon Dioxide (SiO2)) — sedimentary

Geode Nodules / Agate Chert

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon dioxide (microcrystalline quartz, SiO2)

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

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline Quartz (SiO2)

Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Agate

Cryptocrystalline Quartz (SiO2)

Chert (Common Opal/Jasper variety) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Common Opal/Jasper variety)

Cryptocrystalline Quartz (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)

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

Flint (or Chert)

Cryptocrystalline Quartz (SiO2)

Chert (Yellow Jasper/Common Opal variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper/Common Opal variety)

Microcrystalline Quartz (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Tumbled Jasper and Tiger's Eye (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Tumbled Jasper and Tiger's Eye

Silicon Dioxide (SiO2) with iron oxide inclusions

Carnelian Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — sedimentary

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Flint (Chert Node)

Silicon Dioxide (SiO2)

Chert (Channery Chert (Microcrystalline Quartz)) — sedimentary

Chert

Channery Chert (Microcrystalline Quartz)

Chert with Quartz Veins (Microcrystalline silica (SiO2)) — sedimentary

Chert with Quartz Veins

Microcrystalline silica (SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Polished red jasper and carnelian-like stones (Jasper: microcrystalline quartz (SiO₂), commonly colored by iron oxides; translucent piece may be carnelian, a chalcedony variety) — mineral

Polished red jasper and carnelian-like stones

Jasper: microcrystalline quartz (SiO₂), commonly colored by iron oxides; translucent piece may be carnelian, a chalcedony variety

Banded chert (likely jasper/chalcedony) (Microcrystalline quartz (SiO₂), chiefly chert with iron-oxide staining) — sedimentary

Banded chert (likely jasper/chalcedony)

Microcrystalline quartz (SiO₂), chiefly chert with iron-oxide staining

Chalcedony Pebble with Jasper/Iron Oxide Cortex (Silicon Dioxide (SiO2)) — mineral

Chalcedony Pebble with Jasper/Iron Oxide Cortex

Silicon Dioxide (SiO2)

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

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)