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

Tree Agate (Silicon Dioxide (SiO2) with dendritic inclusions) — mineral

Tree Agate

Silicon Dioxide (SiO2) with dendritic inclusions

Chalcedony (Moonstone variant or White Agate) (Silicon Dioxide (SiO₂)) — mineral

Chalcedony (Moonstone variant or White Agate)

Silicon Dioxide (SiO₂)

Chalcedony Geode Fragment (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony Geode Fragment

Microcrystalline Quartz (SiO2)

Fossiliferous limestone, likely coral or shell fragment (Calcitic limestone (primarily CaCO₃), containing preserved marine bioclasts) — fossil

Fossiliferous limestone, likely coral or shell fragment

Calcitic limestone (primarily CaCO₃), containing preserved marine bioclasts

Fossiliferous limestone, possibly coral or stromatoporoid fossil (Calcitic limestone; predominantly CaCO₃, with fossilized colonial-organism structures) — fossil

Fossiliferous limestone, possibly coral or stromatoporoid fossil

Calcitic limestone; predominantly CaCO₃, with fossilized colonial-organism structures

Fossiliferous Limestone / Petoskey Stone (Coral Fossil) (Hexagonaria percarinata / Calcite (CaCO3)) — fossil

Fossiliferous Limestone / Petoskey Stone (Coral Fossil)

Hexagonaria percarinata / Calcite (CaCO3)

Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Agate

Cryptocrystalline Quartz (SiO2)

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

Jasper

Jasper (Cryptocrystalline Quartz, SiO2)

Jasper (Jasper (Cryptocrystalline variety of Quartz, SiO2)) — sedimentary

Jasper

Jasper (Cryptocrystalline variety of Quartz, SiO2)

Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Agate

Cryptocrystalline Quartz (SiO2)

Shiva Lingam (Cryptocrystalline Quartz (Jasproid/Jasper)) — sedimentary

Shiva Lingam

Cryptocrystalline Quartz (Jasproid/Jasper)

Jasper (Cryptocrystalline Quartz (SiO2)) — sedimentary

Jasper

Cryptocrystalline Quartz (SiO2)

Jasper (Jasper (Cryptocrystalline variety of Quartz, SiO2)) — sedimentary

Jasper

Jasper (Cryptocrystalline variety of Quartz, SiO2)

Jasper (Opaque Cryptocrystalline Quartz (SiO2)) — sedimentary

Jasper

Opaque Cryptocrystalline Quartz (SiO2)

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

Chalcedony (Agate/Chert)

Microcrystalline Quartz (SiO2)

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

Chalcedony (Common Agate)

Cryptocrystalline Quartz (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz) (Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates) — igneous, sedimentary, and metamorphic

Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)

Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates

igneous, sedimentary, and metamorphic

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

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Red Jasper (SiO2, Chalcedony with iron inclusions) — mineral

Red Jasper

SiO2, Chalcedony with iron inclusions

Carnelian (Carnelian (Chalcedony/Quartz, SiO2)) — mineral

Carnelian

Carnelian (Chalcedony/Quartz, SiO2)

Iron-rich quartzite or weathered ironstone (Quartzite dominated by quartz (SiO₂), with iron oxides/hydroxides such as hematite and goethite) — metamorphic

Iron-rich quartzite or weathered ironstone

Quartzite dominated by quartz (SiO₂), with iron oxides/hydroxides such as hematite and goethite

Chalcedony (Desert Rose or Botryoidal Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Desert Rose or Botryoidal Chalcedony)

Silicon Dioxide (SiO2)

Tumbled banded jasper, likely brecciated jasper (Microcrystalline quartz (SiO₂) with iron-oxide and clay inclusions) — mineral

Tumbled banded jasper, likely brecciated jasper

Microcrystalline quartz (SiO₂) with iron-oxide and clay inclusions

Flint / Chert Pebble (Microcrystalline quartz (SiO2)) — sedimentary

Flint / Chert Pebble

Microcrystalline quartz (SiO2)

Quartz Pebble (Chalcedony / Agate) (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble (Chalcedony / Agate)

Silicon Dioxide (SiO2)

Carnelian (Chalcedony (cryptocrystalline quartz), SiO2) — Mineral

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

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

Yellow Quartz / Chalcedony Pebble

SiO2 (Silicon Dioxide)

Dendritic Agate (Blue Chalcedony) (Silicon Dioxide (SiO2)) — sedimentary

Dendritic Agate (Blue Chalcedony)

Silicon Dioxide (SiO2)

Jasper in Quartz / Brecciated Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Jasper in Quartz / Brecciated Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Geode Nodules / Chert Pebble (Silicon Dioxide (SiO2) / Quartz concretion) — sedimentary

Geode Nodules / Chert Pebble

Silicon Dioxide (SiO2) / Quartz concretion

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

Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx) (Calcium Carbonate (CaCO3)) — mineral

Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)

Calcium Carbonate (CaCO3)

Chalcedony (Agate/Chert variety) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Yellow jasper (likely iron-stained chert or quartzite) (Microcrystalline quartz, SiO₂, colored by iron oxides/hydroxides) — mineral

Yellow jasper (likely iron-stained chert or quartzite)

Microcrystalline quartz, SiO₂, colored by iron oxides/hydroxides

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Tumbled carnelian (Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)) — gemstone

Tumbled carnelian

Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Jasper and Chalcedony Nodule (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper and Chalcedony Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chalcedony (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (River Pebble)

Silicon Dioxide (SiO2)

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

Red Jasper Pebble

Silicon Dioxide (SiO2) with Iron Oxide inclusions

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

Carnelian

Chalcedony (Silicon Dioxide, SiO2)