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

Chert (specifically Jasper) (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Chert (specifically Jasper)

Silicon dioxide (SiO2) with iron oxide inclusions

Yellow Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2)

Red Jasper (Chalcedony/Quartz (SiO2) with iron inclusions) — mineral

Red Jasper

Chalcedony/Quartz (SiO2) with iron inclusions

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

Red Jasper (Opaque Chalcedony)

Silicon Dioxide (SiO2) with Hematite inclusions

Tumbled jasper or brecciated jasper (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and dark mineral inclusions) — mineral

Tumbled jasper or brecciated jasper

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and dark mineral inclusions

Red Jasper (Silicon Dioxide (SiO2) with Iron inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron inclusions

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Chalcedony/Agate variety) (Silicon dioxide (SiO2)) — sedimentary

Chert (Chalcedony/Agate variety)

Silicon dioxide (SiO2)

Fossil Coral (Petoskey / Horn Coral Sliced Button) (Scleractinia / Rugosa (Silurian-Devonian Anthozoa)) — fossil

Fossil Coral (Petoskey / Horn Coral Sliced Button)

Scleractinia / Rugosa (Silurian-Devonian Anthozoa)

Jasper (Silicon Dioxide (SiO2) with iron and magnesium inclusions) — sedimentary

Jasper

Silicon Dioxide (SiO2) with iron and magnesium inclusions

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

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Carnelian (Orange Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Orange Chalcedony)

Silicon Dioxide (SiO2)

Polished agate/jasper nodule (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide impurities) — mineral

Polished agate/jasper nodule

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide impurities

Chert (or Flint) (SiO2 (predominantly microcrystalline quartz)) — Sedimentary

Chert (or Flint)

SiO2 (predominantly microcrystalline quartz)

Likely weathered fossil shell or fossiliferous limestone (Indeterminate molluscan fossil, possibly a bivalve or brachiopod preserved in carbonate rock) — fossil

Likely weathered fossil shell or fossiliferous limestone

Indeterminate molluscan fossil, possibly a bivalve or brachiopod preserved in carbonate rock

Crinoid Stem Fossil (Crinoidea (Class) / Calcite (CaCO3)) — fossil

Crinoid Stem Fossil

Crinoidea (Class) / Calcite (CaCO3)

Crinozoan fossil (Crinoid stem fragment) (Crinoid (Class Crinoidea)) — fossil

Crinozoan fossil (Crinoid stem fragment)

Crinoid (Class Crinoidea)

Crinoid Stem Fossil (Class Crinoidea (Echinodermata)) — fossil

Crinoid Stem Fossil

Class Crinoidea (Echinodermata)

Crinoid Stem Fossil (Class Crinoidea (Echinodermata)) — fossil

Crinoid Stem Fossil

Class Crinoidea (Echinodermata)

Crinoid Stem Fossil (Class Crinoidea (Echinodermata)) — fossil

Crinoid Stem Fossil

Class Crinoidea (Echinodermata)

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

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

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

Green Jasper

Silicon Dioxide (SiO2) with impurities

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

Yellow Chalcedony (Agate Pebble)

Silicon Dioxide (SiO2)

Heliotrope (Bloodstone) (Chalcedony variety Quartz (SiO2) with hematite/chlorite inclusions) — mineral

Heliotrope (Bloodstone)

Chalcedony variety Quartz (SiO2) with hematite/chlorite inclusions

Agate (Silicon dioxide (SiO2)) — mineral

Agate

Silicon dioxide (SiO2)

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

Red Jasper

Jasper (Silicon Dioxide with iron oxide inclusions), SiO2

Jasper with Purple Fluorite or Chalcedony (Silicon Dioxide (SiO2) with mineral inclusions) — sedimentary

Jasper with Purple Fluorite or Chalcedony

Silicon Dioxide (SiO2) with mineral inclusions

Petoskey Stone (Hexagonaria percarinata) — fossil

Petoskey Stone

Hexagonaria percarinata

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Blue Chalcedony Geode (with Quartz Druzy) (Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz) — mineral

Blue Chalcedony Geode (with Quartz Druzy)

Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz

Carnelian (a variety of Chalcedony) (SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz) — mineral

Carnelian (a variety of Chalcedony)

SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz

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

White Agate (Chalcedony)

Silicon Dioxide (SiO2)

Yellow chalcedony (likely citrine or iron-stained quartz) (Microcrystalline quartz, SiO₂; yellow coloration likely from iron oxides or included quartz varieties) — mineral

Yellow chalcedony (likely citrine or iron-stained quartz)

Microcrystalline quartz, SiO₂; yellow coloration likely from iron oxides or included quartz varieties

Agate (Silicon dioxide (SiO2)) — gemstone

Agate

Silicon dioxide (SiO2)

Blue Lace Agate (or similar Chalcedony) (SiO2 (Silicon Dioxide)) — mineral

Blue Lace Agate (or similar Chalcedony)

SiO2 (Silicon Dioxide)

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

Botryoidal Chalcedony / Quartz

Silicon Dioxide (SiO2)

Jasper River Pebble (Jasper (Silicon Dioxide, SiO2)) — sedimentary (cryptocrystalline quartz)

Jasper River Pebble

Jasper (Silicon Dioxide, SiO2)

sedimentary (cryptocrystalline quartz)

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

Botryoidal Chalcedony (Agate)

Cryptocrystalline Quartz (SiO2)

Agate (specifically, multi-colored or pastel-dyed agate) (Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).) — Mineral

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

Yellow Jasper (Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)) — Mineral-based Sedimentary/Silica

Yellow Jasper

Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)

Mineral-based Sedimentary/Silica

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

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

Yellow Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO₂)