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

Fossil-bearing limestone (possible shell fossil) (Fossiliferous limestone, composed mainly of calcite (CaCO₃)) — sedimentary

Fossil-bearing limestone (possible shell fossil)

Fossiliferous limestone, composed mainly of calcite (CaCO₃)

Petrified Wood (Silicified wood (Quartz replacement)) — fossil

Petrified Wood

Silicified wood (Quartz replacement)

Tumbled chalcedony or pale agate (Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide staining) — mineral

Tumbled chalcedony or pale agate

Microcrystalline quartz (SiO₂), likely chalcedony with iron-oxide staining

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Fossiliferous Limestone (Calcium Carbonate (CaCO3) matrix with biogenic fragments) — fossil

Fossiliferous Limestone

Calcium Carbonate (CaCO3) matrix with biogenic fragments

Sandstone (Fossiliferous) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Fossiliferous)

Clastic Sedimentary Rock (primarily SiO2)

Fossiliferous Limestone with Coral Imprint (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone with Coral Imprint

Fossiliferous Limestone (CaCO3)

Coquina or Fossiliferous Limestone (Fossiliferous Limstone (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Limstone (CaCO3)

Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Fossiliferous Limestone (Fossiliferous Calcite (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Calcite (CaCO3)

Fossiliferous Limestone (Fossiliferous Calcilutite / Biomicrite) — sedimentary

Fossiliferous Limestone

Fossiliferous Calcilutite / Biomicrite

Coquina or Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Coquina / Fossiliferous Limestone (Fossiliferous Limestone (CaCO3)) — Sedimentary

Coquina / Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

Limestone (Flagstone) (Fossiliferous Limestone (CaCO3)) — sedimentary

Limestone (Flagstone)

Fossiliferous Limestone (CaCO3)

Petrified Wood (Silicified Wood (Permineralized organic tissue)) — fossil

Petrified Wood

Silicified Wood (Permineralized organic tissue)

Shark Tooth Fossil (Carcharocles megalodon or similar extinct shark tooth) — fossil

Shark Tooth Fossil

Carcharocles megalodon or similar extinct shark tooth

Light-colored limestone (Calcitic limestone; primarily calcium carbonate (CaCO₃), mineral calcite) — sedimentary

Light-colored limestone

Calcitic limestone; primarily calcium carbonate (CaCO₃), mineral calcite

Shale / Mudstone (Laminated Mudrock (Siliciclastic Sedimentary Rock)) — sedimentary

Shale / Mudstone

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Polished brecciated jasper (Silicified breccia, chiefly microcrystalline quartz (SiO₂) with iron-oxide staining) — sedimentary

Polished brecciated jasper

Silicified breccia, chiefly microcrystalline quartz (SiO₂) with iron-oxide staining

Coquina / Fossiliferous Limestone (Fossiliferous Limestone / CaCO3) — sedimentary

Coquina / Fossiliferous Limestone

Fossiliferous Limestone / CaCO3

Agatized fossil fragment, possibly silicified coral (Chalcedony (microcrystalline SiO₂) replacing carbonate fossil material) — fossil

Agatized fossil fragment, possibly silicified coral

Chalcedony (microcrystalline SiO₂) replacing carbonate fossil material

Petrified Wood (Silicified wood (Quartz replacement, SiO2)) — fossil

Petrified Wood

Silicified wood (Quartz replacement, SiO2)

Fossil Shell Fragment (possibly Brachiopod or Bivalve) (Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca) — sedimentary

Fossil Shell Fragment (possibly Brachiopod or Bivalve)

Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca

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

Petrified Wood

Silicified Wood (primarily SiO2)

Fossiliferous Limestone (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

Pale blue-gray quartz-rich pebble (tentative) (Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment) — mineral

Pale blue-gray quartz-rich pebble (tentative)

Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment

Fossilized wood (petrified wood) (Silicified fossil wood; commonly quartz/chalcedony (SiO₂) replacing wood) — fossil

Fossilized wood (petrified wood)

Silicified fossil wood; commonly quartz/chalcedony (SiO₂) replacing wood

Fossiliferous limestone (Bioclastic carbonate rock, chiefly calcite (CaCO₃), with fossil shells/coral fragments) — sedimentary

Fossiliferous limestone

Bioclastic carbonate rock, chiefly calcite (CaCO₃), with fossil shells/coral fragments

Polished banded agate (likely petrified wood) (Microcrystalline quartz (SiO₂); possibly silicified wood) — mineral

Polished banded agate (likely petrified wood)

Microcrystalline quartz (SiO₂); possibly silicified wood

Fossiliferous Kalkstein (Marl/Sandstone) (Fossiliferous calcarenite/siltstone) — sedimentary

Fossiliferous Kalkstein (Marl/Sandstone)

Fossiliferous calcarenite/siltstone

Ocean Jasper (Orbicular Jasper / Variolitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Orbicular Jasper / Variolitic Chalcedony (SiO2)

Orbicular jasper (Silicified volcanic or sedimentary rock, primarily microcrystalline quartz (SiO₂) with iron-oxide-rich orbicules) — sedimentary

Orbicular jasper

Silicified volcanic or sedimentary rock, primarily microcrystalline quartz (SiO₂) with iron-oxide-rich orbicules

Polished purple-and-cream jasper (likely) (Silica-rich microcrystalline quartz/chalcedony, SiO₂, colored by iron/manganese minerals) — metamorphic

Polished purple-and-cream jasper (likely)

Silica-rich microcrystalline quartz/chalcedony, SiO₂, colored by iron/manganese minerals

Limestone (Fossiliferous) (Calcium Carbonate (CaCO3) - Bioclastic Limestone) — sedimentary

Limestone (Fossiliferous)

Calcium Carbonate (CaCO3) - Bioclastic Limestone

Coquina or Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Limestone with Fossil inclusions (Fossiliferous Limestone (CaCO3)) — sedimentary

Limestone with Fossil inclusions

Fossiliferous Limestone (CaCO3)

Coquina or Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Fossiliferous Limestone (with Crinoids/Coral) (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone (with Crinoids/Coral)

Fossiliferous Limestone (CaCO3)

Coquina or Fossiliferous Limestone (Fossiliferous Calcarenite (CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Fossiliferous Calcarenite (CaCO3)

Fossiliferous Limestone (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

Fossil Coral / Fossilized Coral (Scleractinia (Anthodiscus / Favia / Montastraea fossil)) — fossil

Fossil Coral / Fossilized Coral

Scleractinia (Anthodiscus / Favia / Montastraea fossil)

Shale (Laminated Mudstone) — sedimentary

Shale

Laminated Mudstone