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

Blue Chalcedony

Blue Chalcedony

Chrome Chalcedony

Chrome Chalcedony

Silcrete

Opalized Wood

Shelly Limestone

Shelly Limestone

Petrified Wood

Conglomerate

Gem Silica

Mookaite

Chrysoprase

Tumbled yellow jasper (likely silicified/iron-stained chert) (Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and darker inclusions) — mineral

Tumbled yellow jasper (likely silicified/iron-stained chert)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and darker inclusions

White limestone or chalky carbonate rock (Calcite-rich limestone; possibly chalk (CaCO₃)) — sedimentary

White limestone or chalky carbonate rock

Calcite-rich limestone; possibly chalk (CaCO₃)

Petrified wood (Silicified wood, chiefly microcrystalline quartz (SiO₂)) — fossil

Petrified wood

Silicified wood, chiefly microcrystalline quartz (SiO₂)

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

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide / Chalcedony)

Fossiliferous Limestone Pebble (Calcium Carbonate (CaCO3) with Biogenic Inclusions) — sedimentary

Fossiliferous Limestone Pebble

Calcium Carbonate (CaCO3) with Biogenic Inclusions

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Mookaite Jasper (Siliceous (chert) sedimentary rock, a form of Jasper) — Sedimentary

Mookaite Jasper

Siliceous (chert) sedimentary rock, a form of Jasper

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Weathered sandstone or fine-grained sedimentary rock (Quartz-rich sandstone, possibly arkose or lithic sandstone) — sedimentary

Weathered sandstone or fine-grained sedimentary rock

Quartz-rich sandstone, possibly arkose or lithic sandstone

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Orbicular jasper (polished jasper slab) (Orbicular jasper; microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions) — mineral

Orbicular jasper (polished jasper slab)

Orbicular jasper; microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions

Bamboo Leaf Jasper (Silicified Siltstone or Jasper (SiO2)) — sedimentary

Bamboo Leaf Jasper

Silicified Siltstone or Jasper (SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — mineral

Petrified Wood

Silicified Wood (primarily SiO2)

Tumbled fossiliferous limestone (likely fossiliferous marble) (Fossiliferous limestone, composed mainly of calcite (CaCO₃); the pale circular fossils appear to be shell or crinoid fragments) — sedimentary

Tumbled fossiliferous limestone (likely fossiliferous marble)

Fossiliferous limestone, composed mainly of calcite (CaCO₃); the pale circular fossils appear to be shell or crinoid fragments

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Petrified wood (Silicified fossil wood, commonly quartz/chalcedony (SiO₂)) — fossil

Petrified wood

Silicified fossil wood, commonly quartz/chalcedony (SiO₂)

Petrified Wood (Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)) — fossil

Petrified Wood

Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)

Petrified Wood (Silicified wood (Quartz/Chalcedony replacement of organic matter)) — fossil

Petrified Wood

Silicified wood (Quartz/Chalcedony replacement of organic matter)

Petrified Wood (Silicified wood (Quartz / Chalcedony replacement of organic cellulose)) — fossil

Petrified Wood

Silicified wood (Quartz / Chalcedony replacement of organic cellulose)

Geode Nodule Fragment (Quartz / Chalcedony Nodule) — sedimentary

Geode Nodule Fragment

Quartz / Chalcedony Nodule

Mookaite Jasper (Radiolarite (Silicified radiolarian chert)) — sedimentary

Mookaite Jasper

Radiolarite (Silicified radiolarian chert)

Rounded gray-green chert (likely silicified limestone) (Microcrystalline quartz/chalcedony (SiO₂), possibly jasper or siliceous limestone) — sedimentary

Rounded gray-green chert (likely silicified limestone)

Microcrystalline quartz/chalcedony (SiO₂), possibly jasper or siliceous limestone

Fossiliferous Limestone (Sedimentary rock containing Indeterminate Fossil remains (likely Crinoid stem or Bryozoan fragment)) — fossil

Fossiliferous Limestone

Sedimentary rock containing Indeterminate Fossil remains (likely Crinoid stem or Bryozoan fragment)

Mookaite Jasper (Mookaite (Silicified radiolarite, SiO2)) — sedimentary

Mookaite Jasper

Mookaite (Silicified radiolarite, SiO2)

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

Yellow Jasper

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

Fossiliferous limestone, likely containing a large bivalve or gastropod fossil (Calcite-rich limestone (CaCO₃) with molluscan bioclast) — sedimentary

Fossiliferous limestone, likely containing a large bivalve or gastropod fossil

Calcite-rich limestone (CaCO₃) with molluscan bioclast

Chert with Fossil inclusions (Microcrystalline Quartz (SiO2) with biogenic inclusions) — sedimentary

Chert with Fossil inclusions

Microcrystalline Quartz (SiO2) with biogenic inclusions

Fossil Shell in Sedimentary Matrix (Bivalvia (fossil) in Calcium Carbonate Matrix) — sedimentary

Fossil Shell in Sedimentary Matrix

Bivalvia (fossil) in Calcium Carbonate Matrix

Petrified Wood (Silicified Wood (primarily SiO2)) — mineral

Petrified Wood

Silicified Wood (primarily SiO2)

Mookaite Jasper (Silicified radiolarian ooze (SiO2)) — sedimentary

Mookaite Jasper

Silicified radiolarian ooze (SiO2)

Mookaite Jasper (Silicified Porcellanite (SiO2 with impurities)) — sedimentary

Mookaite Jasper

Silicified Porcellanite (SiO2 with impurities)

Fossil shell fragment (Indeterminate molluscan bioclast, likely aragonite or calcite) — fossil

Fossil shell fragment

Indeterminate molluscan bioclast, likely aragonite or calcite

Fossilized Coral (Cnidaria (Hexacorallia)) — fossil

Fossilized Coral

Cnidaria (Hexacorallia)

Polished tiger’s-eye jasper (likely brecciated jasper) (Quartz-rich microcrystalline silica; mainly chalcedony/quartz (SiO₂) with iron-oxide pigments) — metamorphic

Polished tiger’s-eye jasper (likely brecciated jasper)

Quartz-rich microcrystalline silica; mainly chalcedony/quartz (SiO₂) with iron-oxide pigments

Weathered quartz-rich rock or fossil fragment (Indeterminate; likely quartz-bearing sandstone or siliceous fossil material) — mineral

Weathered quartz-rich rock or fossil fragment

Indeterminate; likely quartz-bearing sandstone or siliceous fossil material

Tumbled yellow chalcedony (likely yellow jasper or silicified material) (Microcrystalline quartz, SiO₂; precise identification requires testing) — mineral

Tumbled yellow chalcedony (likely yellow jasper or silicified material)

Microcrystalline quartz, SiO₂; precise identification requires testing

Weathered limestone (Calcite-rich carbonate rock (mostly CaCO₃)) — sedimentary

Weathered limestone

Calcite-rich carbonate rock (mostly CaCO₃)

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Vesicular Limestone with Borings (Fossiliferous Calcarenite (Calcium Carbonate, CaCO3)) — sedimentary

Vesicular Limestone with Borings

Fossiliferous Calcarenite (Calcium Carbonate, CaCO3)