Rock Identifier

Category

Mineral, Variety Of Chalcedony (Microcrystalline Quartz)

Browse mineral, variety of chalcedony (microcrystalline quartz) specimens identified by the Rock Identifier community.

Blue Lace Agate (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Blue Lace Agate (Tumbled)

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Druzy Agate (Star-cut Geode Slice) (Silicon Dioxide (SiO2) - Microcrystalline and Macrocrystalline Quartz) — mineral

Druzy Agate (Star-cut Geode Slice)

Silicon Dioxide (SiO2) - Microcrystalline and Macrocrystalline Quartz

Yellow Jasper (Silicon Dioxide (SiO2) - Opaque Chalcedony) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) - Opaque Chalcedony

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Flower Agate (Chalcedony (Silicon Dioxide, SiO2) with Opaque Spherulitic Inclusions) — mineral

Flower Agate

Chalcedony (Silicon Dioxide, SiO2) with Opaque Spherulitic Inclusions

Chalcedony (Common Opal/Chert variety) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Common Opal/Chert variety)

Silicon Dioxide (SiO2)

White Agate (resembling Bone Chalcedony) (Cryptocrystalline Quartz (SiO2)) — mineral

White Agate (resembling Bone Chalcedony)

Cryptocrystalline Quartz (SiO2)

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

Agate

Silicon Dioxide (SiO2) - Banded Chalcedony

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

Red Jasper

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

Jasper (likely Lake Superior Jasper) (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper (likely Lake Superior Jasper)

Jasper (Silicon Dioxide, SiO2)

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

Jasper with Iron Staining

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

Dalmatian Stone (Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)) — igneous

Dalmatian Stone

Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Yellow Jasper (Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2)) — sedimentary

Yellow Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2)

Agate (translucent slice) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate (translucent slice)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Yellow Chalcedony (Agate Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (Agate Pebble)

Silicon Dioxide (SiO2)

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Ocean Jasper (Orbicular Jasper/Microcrystalline Quartz (SiO2)) — sedimentary

Ocean Jasper

Orbicular Jasper/Microcrystalline Quartz (SiO2)

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

Jasper with Hematite inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Quartz Pebble (Chalcedony/Agate variety) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Chalcedony/Agate variety)

Silicon Dioxide (SiO2)

Carnelian (Chalcedony) (Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities) — mineral

Carnelian (Chalcedony)

Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities

Jasper (specifically Picture Jasper or Landscape Jasper) (Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz) — sedimentary

Jasper (specifically Picture Jasper or Landscape Jasper)

Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Hawk's Eye (Blue Tiger's Eye) (Quartz (fibrous crocidolite variety)) — Mineral

Hawk's Eye (Blue Tiger's Eye)

Quartz (fibrous crocidolite variety)

Jasper (specifically Chert/Ironstone) (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — sedimentary

Jasper (specifically Chert/Ironstone)

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

Lavender Agate / Chalcedony Sphere (Agate (Microcrystalline Quartz) - SiO2) — mineral

Lavender Agate / Chalcedony Sphere

Agate (Microcrystalline Quartz) - SiO2

Blue Chalcedony (likely dyed Agate) (Silicon Dioxide (SiO₂)) — mineral

Blue Chalcedony (likely dyed Agate)

Silicon Dioxide (SiO₂)

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

Chert (often called Flint)

Microcrystalline Quartz (SiO2)

Jasper (likely Lake Superior Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary (silica-rich mineral variety)

Jasper (likely Lake Superior Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary (silica-rich mineral variety)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

Botryoidal Black Chalcedony Geode (Black Grape Agate) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — Mineral

Botryoidal Black Chalcedony Geode (Black Grape Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Jasper

Jasper (Silicon Dioxide, SiO2)

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

Red Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Fossilized Wood (Petrified Wood) (Silicified Wood (primarily quartz/chalcedony replacing organic matter)) — Sedimentary (with some aspects of mineral replacement)

Fossilized Wood (Petrified Wood)

Silicified Wood (primarily quartz/chalcedony replacing organic matter)

Sedimentary (with some aspects of mineral replacement)

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

Chert (containing Flint and Chalcedony)

Microcrystalline Quartz (SiO2)

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

Yellow Jasper

Silicon Dioxide with Iron inclusions (SiO2)

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

Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

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

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

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

Jasper

Jasper (Silicon Dioxide, SiO2)