Rock Identifier

Category

Sedimentary (With Some Aspects Of Mineral Replacement)

Browse sedimentary (with some aspects of mineral replacement) specimens identified by the Rock Identifier community.

Learn about Sedimentary (With Some Aspects Of Mineral Replacement) in the encyclopedia

Coal

Claystone

Shale

Marl

Black Shale

Super Seven

Rock Salt

Anatase

Limestone

Siltstone

Pisolite

Bituminous Shale

Bituminous Shale

Fossilized Syringopora (Piping Organ Coral) (Syringopora (Extinct Genus of Tabulate Coral)) — sedimentary

Fossilized Syringopora (Piping Organ Coral)

Syringopora (Extinct Genus of Tabulate Coral)

Flint (Chert Node) (Silicon Dioxide (SiO2)) — sedimentary

Flint (Chert Node)

Silicon Dioxide (SiO2)

Fossil Shell (Invertebrate fossil (Mollusca)) — fossil

Fossil Shell

Invertebrate fossil (Mollusca)

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

Red Jasper (Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Rhodochrosite (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

Hematite Nodular Iron Ore (Hematite (Fe2O3)) — mineral

Hematite Nodular Iron Ore

Hematite (Fe2O3)

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

Chalcedony (Grey/White Agate)

Silicon Dioxide (SiO₂)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Chert (Flint / Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint / Jasper)

Silicon Dioxide (SiO2)

Tumbled brown jasper (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and clay inclusions) — mineral

Tumbled brown jasper

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

Fossilized bivalve shell (Fossil mollusk, likely an oyster or similar bivalve; original shell composed of calcium carbonate (aragonite/calcite)) — fossil

Fossilized bivalve shell

Fossil mollusk, likely an oyster or similar bivalve; original shell composed of calcium carbonate (aragonite/calcite)

Chert Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Quartz (SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Bivalve Fossil (Internal Mold/Steinkern) (Class Bivalvia (Fossilized Mold)) — sedimentary

Bivalve Fossil (Internal Mold/Steinkern)

Class Bivalvia (Fossilized Mold)

Gastropod Fossil (Snail Internal Mold) (Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)) — sedimentary

Gastropod Fossil (Snail Internal Mold)

Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)

Fossilized Bone (Petrified Bone (Fluorapatite / Calcium Phosphate replacement)) — fossil

Fossilized Bone

Petrified Bone (Fluorapatite / Calcium Phosphate replacement)

Polished ammonite fossil (Ammonite, an extinct cephalopod; commonly polished specimens are from Jurassic or Cretaceous forms) — fossil

Polished ammonite fossil

Ammonite, an extinct cephalopod; commonly polished specimens are from Jurassic or Cretaceous forms

Polished brecciated jasper (likely ocean jasper or red jasper) (Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide hematite/goethite and dark volcanic or manganese-rich inclusions) — mineral

Polished brecciated jasper (likely ocean jasper or red jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide hematite/goethite and dark volcanic or manganese-rich inclusions

Possible magnetite fragment (Magnetite (Fe₃O₄), tentative identification) — mineral

Possible magnetite fragment

Magnetite (Fe₃O₄), tentative identification

Dinosaur Claw Fossil (Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)) — fossil

Dinosaur Claw Fossil

Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)

Fossilized Brachiopod (Brachiopoda (Phylum)) — fossil

Fossilized Brachiopod

Brachiopoda (Phylum)

Carnelian (Red Chalcedony) (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian (Red Chalcedony)

Silicon Dioxide (SiO2) with iron oxide impurities

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

Yellow Jasper (Tectosilicates (SiO2) with Goethite/Iron oxide inclusions) — sedimentary

Yellow Jasper

Tectosilicates (SiO2) with Goethite/Iron oxide inclusions

Magnetite / Hematite mix (Iron Ore) (Fe3O4 (Magnetite) / Fe2O3 (Hematite)) — mineral

Magnetite / Hematite mix (Iron Ore)

Fe3O4 (Magnetite) / Fe2O3 (Hematite)

Fossil Shark Tooth (Chondrichthyes (Class)) — fossil

Fossil Shark Tooth

Chondrichthyes (Class)

Pink Feldspar (Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8) — mineral

Pink Feldspar

Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8

Fossilized bivalve shell fragment (Fossil Mollusca, likely a bivalve (class Bivalvia); exact genus cannot be determined from the image) — fossil

Fossilized bivalve shell fragment

Fossil Mollusca, likely a bivalve (class Bivalvia); exact genus cannot be determined from the image

Chalcopyrite (CuFeS2) — mineral

Chalcopyrite

CuFeS2

Fossilized Shark Tooth (Selachimorpha fossil (varies by species)) — fossil

Fossilized Shark Tooth

Selachimorpha fossil (varies by species)

Tumbled dark stone, possibly hematite or black jasper (Uncertain; likely hematite (Fe₂O₃) or fine-grained chalcedony/jasper (SiO₂)) — mineral

Tumbled dark stone, possibly hematite or black jasper

Uncertain; likely hematite (Fe₂O₃) or fine-grained chalcedony/jasper (SiO₂)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

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

Green Jasper

Jasper (Silicon Dioxide, SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Shark Tooth Fossil (Otodus obliquus (or similar prehistoric lamniform shark tooth)) — fossil

Shark Tooth Fossil

Otodus obliquus (or similar prehistoric lamniform shark tooth)

Chert / Flint (Chert (varieties include Flint)) — Sedimentary

Chert / Flint

Chert (varieties include Flint)

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

Polished fossil ammonite (Ammonite cephalopod fossil, likely an ammonite mold/cast in calcite or aragonite-derived mineralization) — fossil

Polished fossil ammonite

Ammonite cephalopod fossil, likely an ammonite mold/cast in calcite or aragonite-derived mineralization

Chert (Jasper/Agate variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Agate variety)

Silicon Dioxide (SiO2)

Polished jasper slab (Jasper, an opaque microcrystalline variety of chalcedony (SiO₂), colored mainly by iron oxides) — mineral

Polished jasper slab

Jasper, an opaque microcrystalline variety of chalcedony (SiO₂), colored mainly by iron oxides

Chert (Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2)