Rock Identifier

Category

Sedimentary (Silicified Fossiliferous Chalcedony)

Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Silicified Fossiliferous Chalcedony) in the encyclopedia

Fossiliferous Limestone

Fossiliferous Limestone

Chalcedony

Chrome Chalcedony

Chrome Chalcedony

Blue Chalcedony

Blue Chalcedony

Silcrete

Opalized Wood

Shelly Limestone

Shelly Limestone

Petrified Wood

Conglomerate

Gem Silica

Mookaite

Chrysoprase

Jasper with Quartz Druzy (Silicon Dioxide (SiO2)) — sedimentary

Jasper with Quartz Druzy

Silicon Dioxide (SiO2)

Banded Calcite (often sold as 'Onyx') (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often sold as 'Onyx')

Calcite (Calcium Carbonate, CaCO3)

Red Jasper Concretion (Cryptocrystalline Quartz (SiO2)) — sedimentary

Red Jasper Concretion

Cryptocrystalline Quartz (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Iron Oxide inclusions

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

Jasper

Jasper (Silicon Dioxide, SiO2)

Banded Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Banded Jasper

Silicon Dioxide (SiO2) with impurities

Green Jasper (Silicon Dioxide (SiO2)) — sedimentary

Green Jasper

Silicon Dioxide (SiO2)

Red Jasper (Plum or Brick variety) (Silicon Dioxide (SiO2) with iron oxide inclusions (Hematite)) — sedimentary (chemical/biological origin)

Red Jasper (Plum or Brick variety)

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

sedimentary (chemical/biological origin)

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

Chalcedony (Grey/White Agate)

Silicon Dioxide (SiO₂)

Chalcedony (Agate/Quartz pebble) (Silicon dioxide (SiO2) - Microcrystalline Quartz) — mineral

Chalcedony (Agate/Quartz pebble)

Silicon dioxide (SiO2) - Microcrystalline Quartz

Geode (Unopened) (Siliceous Septarian Concretion / Geode (SiO2)) — sedimentary

Geode (Unopened)

Siliceous Septarian Concretion / Geode (SiO2)

Jasper (likely river-worn) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (likely river-worn)

Silicon Dioxide (SiO2)

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

Yellow Jasper (Chalcedony)

Silicon Dioxide with Iron inclusions (SiO2)

Agate Pebble / Quartz Pebble (Cryptocrystalline Quartz (SiO2)) — sedimentary

Agate Pebble / Quartz Pebble

Cryptocrystalline Quartz (SiO2)

Red jasper (likely polished/tumbled) (Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides) — mineral

Red jasper (likely polished/tumbled)

Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides

Tumbled yellow chalcedony (likely citrine or yellow quartz) (Quartz, SiO₂; potentially microcrystalline chalcedony) — mineral

Tumbled yellow chalcedony (likely citrine or yellow quartz)

Quartz, SiO₂; potentially microcrystalline chalcedony

Banded Agate (Agatized Geode Slice) (Silicon Dioxide (SiO₂)) — mineral

Banded Agate (Agatized Geode Slice)

Silicon Dioxide (SiO₂)

Tumbled Agate (Carnelian/Sard) (Silicon Dioxide (SiO2)) — mineral

Tumbled Agate (Carnelian/Sard)

Silicon Dioxide (SiO2)

Black Onyx (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Black Onyx

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

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

Jasper

Silicon Dioxide (SiO2) with impurities

Dendritic Chalcedony (Agate) (Cryptocrystalline Quartz (SiO2)) — mineral

Dendritic Chalcedony (Agate)

Cryptocrystalline Quartz (SiO2)

Bloodstone (Chalcedony (Variety: Bloodstone / Heliotrope), SiO2) — mineral

Bloodstone

Chalcedony (Variety: Bloodstone / Heliotrope), SiO2

Agate (Silicon dioxide (chalcedony variety), SiO2) — sedimentary

Agate

Silicon dioxide (chalcedony variety), SiO2

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

Agate Geode

Silicon Dioxide (Chalcedony / Quartz), SiO2

Geode (Quartz / Chalcedony nodule with mineralized cavity) — sedimentary

Geode

Quartz / Chalcedony nodule with mineralized cavity

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

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Carnelian (Red Agate) (Chalcedony (SiO2 with Iron Oxide impurities)) — mineral

Carnelian (Red Agate)

Chalcedony (SiO2 with Iron Oxide impurities)

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

Yellow Quartz / Chalcedony

Silicon Dioxide (SiO2)

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

Chert (Jasper/Chalcedony)

Microcrystalline Quartz (SiO2)

Geode (Quartz / Chalcedony Geode) (Silicon Dioxide (SiO2) - Quartz / Chalcedony) — sedimentary

Geode (Quartz / Chalcedony Geode)

Silicon Dioxide (SiO2) - Quartz / Chalcedony

Chalcedony Geode Fragment (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chalcedony Geode Fragment

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz Geode (Crystalline Silicon Dioxide (SiO2) in Geode form) — sedimentary

Quartz Geode

Crystalline Silicon Dioxide (SiO2) in Geode form

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

Fancy Jasper (Mookaite style)

Silicon Dioxide (SiO2) with iron oxide impurities

Yellow Jasper (Silicon Dioxide (SiO2) with impurities of Iron or Goethite) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with impurities of Iron or Goethite

Polished yellow-orange chalcedony (likely carnelian) (Chalcedony, microcrystalline quartz (SiO₂), iron-colored variety commonly called carnelian) — gemstone

Polished yellow-orange chalcedony (likely carnelian)

Chalcedony, microcrystalline quartz (SiO₂), iron-colored variety commonly called carnelian

Raw honey calcite (probable) (Calcite, calcium carbonate (CaCO₃)) — mineral

Raw honey calcite (probable)

Calcite, calcium carbonate (CaCO₃)

Carnelian (Carnelian (a variety of Chalcedony, SiO2)) — mineral

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Tumbled blue chalcedony (likely dyed) (Cryptocrystalline quartz, SiO₂; chalcedony variety) — gemstone

Tumbled blue chalcedony (likely dyed)

Cryptocrystalline quartz, SiO₂; chalcedony variety

Chalcedony (Agate/Jasper mix in host rock) (Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)) — mineral

Chalcedony (Agate/Jasper mix in host rock)

Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)

Blue Agate (likely Dyed) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Blue Agate (likely Dyed)

Silicon Dioxide (SiO2) - Chalcedony variety

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Chalcedony (Agate/Carnelian variant) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO2)