Rock Identifier

Category

Sedimentary (Silicified Fossiliferous Chalcedony)

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

Chalcedony (Botryoidal or Tumbled) (Chalcedony (SiO₂)) — mineral

Chalcedony (Botryoidal or Tumbled)

Chalcedony (SiO₂)

Blue Chalcedony (Chalcedony (SiO2)) — mineral

Blue Chalcedony

Chalcedony (SiO2)

Yellow Jasper (Chalcedony (SiO2)) — sedimentary

Yellow Jasper

Chalcedony (SiO2)

Chalcedony (Silicon dioxide (SiO2) - Microcrystalline quartz) — mineral

Chalcedony

Silicon dioxide (SiO2) - Microcrystalline quartz

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

Chalcedony (Agate)

Silicon Dioxide (SiO2)

White Agate (Chalcedony) (Chalcedony (SiO2)) — mineral

White Agate (Chalcedony)

Chalcedony (SiO2)

Petrified Wood (Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)) — metamorphic

Petrified Wood

Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)

Chalcedony Nodule in Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony Nodule in Matrix

Silicon Dioxide (SiO2)

Chalcedony (Banded/Mottled Variety) (Chalcedony (a cryptocrystalline variety of Quartz, SiO2)) — Mineral

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)

Diorite (Dalmatian Stone) (Phaneritic Plutonic Diorite) — igneous

Diorite (Dalmatian Stone)

Phaneritic Plutonic Diorite

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Biggs Jasper (Picture Jasper) (Silicon Dioxide (SiO2) - Opaque Silicified Volcanic Ash) — sedimentary

Biggs Jasper (Picture Jasper)

Silicon Dioxide (SiO2) - Opaque Silicified Volcanic Ash

Wonderstone (Liesegang Sandstone) (Silicified Sandstone with Liesegang Rings (SiO2 + FeO(OH))) — sedimentary

Wonderstone (Liesegang Sandstone)

Silicified Sandstone with Liesegang Rings (SiO2 + FeO(OH))

Chalcedony (Silicon Dioxide (SiO₂)) — mineral

Chalcedony

Silicon Dioxide (SiO₂)

Orthoceras Fossil in Limestone (Orthoceras (extinct genus of cephalopods), mineralized as Calcite (CaCO3) in Fossiliferous Limestone) — sedimentary

Orthoceras Fossil in Limestone

Orthoceras (extinct genus of cephalopods), mineralized as Calcite (CaCO3) in Fossiliferous Limestone

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Chalcedony (Silicon dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Chalcedony

Silicon dioxide (SiO2) - Cryptocrystalline Quartz

Chalcedony (Cryptocrystalline Quartz (SiO2)) — Mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Grey Chalcedony (Tumbled) (Chalcedony (SiO2)) — mineral

Grey Chalcedony (Tumbled)

Chalcedony (SiO2)

Agate (Chalcedony (SiO2)) — mineral

Agate

Chalcedony (SiO2)

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Chalcedony (Common Opal or Agate variant) (Silicon Dioxide (SiO₂)) — mineral

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Dalmation Stone (often called Dalmatian Jasper) (Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite) — igneous

Dalmation Stone (often called Dalmatian Jasper)

Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite

Quartz Geode (partially formed/chalcedony with iron staining) (Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides) — Mineral/Sedimentary Rock Feature

Quartz Geode (partially formed/chalcedony with iron staining)

Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides

Mineral/Sedimentary Rock Feature

Chalcedony in Host Rock (Chalcedony (SiO2)) — mineral

Chalcedony in Host Rock

Chalcedony (SiO2)

Carnelian (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian

Carnelian (Silicon Dioxide - SiO2)

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

White Chalcedony (Agate)

Silicon Dioxide (SiO2)

Yellow Chalcedony (Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)) — Mineral

Yellow Chalcedony

Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)

Petrified Wood (Silicified wood (Quartz, SiO2)) — metamorphic

Petrified Wood

Silicified wood (Quartz, SiO2)

Tumbled Carnelian and Quartz Mix (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Tumbled Carnelian and Quartz Mix

Silicon Dioxide (SiO2) with iron oxide impurities

Red Chalcedony (likely dyed) (Chalcedony (a variety of Quartz), SiO2) — Mineral (Cryptocrystalline Quartz)

Red Chalcedony (likely dyed)

Chalcedony (a variety of Quartz), SiO2

Mineral (Cryptocrystalline Quartz)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

Agate (Banded Chalcedony (SiO2)) — mineral

Agate

Banded Chalcedony (SiO2)

Jasper or Chalcedony (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper or Chalcedony

Microcrystalline Quartz (SiO2)

Chalcedony (Chalcedony (a microcrystalline variety of Quartz, SiO2)) — Mineral

Chalcedony

Chalcedony (a microcrystalline variety of Quartz, SiO2)

Yellow Chalcedony (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony

Silicon Dioxide (SiO2)

Ocean Jasper (Orbicular Jasper) (Orbicular Rhyolite (SiO2)) — igneous

Ocean Jasper (Orbicular Jasper)

Orbicular Rhyolite (SiO2)

Limestone (specifically fossiliferous/skeletal limestone) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (specifically fossiliferous/skeletal limestone)

Calcium Carbonate (CaCO3)

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3)) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

White Jade / White Chalcedony (Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) or Chalcedony (SiO2)) — Mineral

White Jade / White Chalcedony

Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) or Chalcedony (SiO2)

Picture Jasper (Silicon Dioxide (SiO2)) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2)