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

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Blue chalcedony cabochon (probable) (Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)) — gemstone

Blue chalcedony cabochon (probable)

Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)

Potassium Feldspar (Orthoclase) (KAlSi3O8) — mineral

Potassium Feldspar (Orthoclase)

KAlSi3O8

Chert (Tripolitic Chert / Flint Nodules) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Tripolitic Chert / Flint Nodules)

Microcrystalline Quartz (SiO2)

Flint (SiO2 (Cryptocrystalline Quartz)) — sedimentary

Flint

SiO2 (Cryptocrystalline Quartz)

Flint (Microcrystalline Quartz (SiO2)) — sedimentary

Flint

Microcrystalline Quartz (SiO2)

Magnetite (potentially Lodestone) (Magnetite (Iron(II,III) oxide, Fe3O4)) — mineral

Magnetite (potentially Lodestone)

Magnetite (Iron(II,III) oxide, Fe3O4)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Galena (Lead(II) sulfide (PbS)) — mineral

Galena

Lead(II) sulfide (PbS)

Chalcedony (Botryoidal or Tumbled) (Chalcedony (SiO₂)) — mineral

Chalcedony (Botryoidal or Tumbled)

Chalcedony (SiO₂)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Chert Nodule (Chert (Microcrystalline Silicon Dioxide, SiO2)) — sedimentary

Chert Nodule

Chert (Microcrystalline Silicon Dioxide, SiO2)

White Zircon (Zircon (Zirconium silicate, ZrSiO4)) — mineral

White Zircon

Zircon (Zirconium silicate, ZrSiO4)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

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

Chert (Chalcedony/Agate Pebble)

Microcrystalline Quartz (SiO2)

Fossilized Echinoid Fragment (Calycinal/Boss Fossil) (Echinodermata fossil fragment) — fossil

Fossilized Echinoid Fragment (Calycinal/Boss Fossil)

Echinodermata fossil fragment

Banded Chert (Ironstone type) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Banded Chert (Ironstone type)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Fossilized bivalve shell fragment (Fossil mollusk shell, likely a pectinid or related bivalve; original shell composed mainly of aragonite or calcite, now partly mineralized) — fossil

Fossilized bivalve shell fragment

Fossil mollusk shell, likely a pectinid or related bivalve; original shell composed mainly of aragonite or calcite, now partly mineralized

Sandstone (Ferruginous) (Arenite with Iron Oxide cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Iron-rich concretion or weathered ironstone (Limonite/goethite-rich iron oxide (hydrated FeO(OH)·nH₂O), possibly with hematite) — mineral

Iron-rich concretion or weathered ironstone

Limonite/goethite-rich iron oxide (hydrated FeO(OH)·nH₂O), possibly with hematite

Ironstone Nodules (Iron Concretion) (Siderite or Hematite Concretion) — sedimentary

Ironstone Nodules (Iron Concretion)

Siderite or Hematite Concretion

Fossilized Bone (Permineralized Bone (Vertebrate Fossil)) — fossil

Fossilized Bone

Permineralized Bone (Vertebrate Fossil)

Chert (River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Fossilized bone fragment (Mineralized vertebrate bone, commonly hydroxyapatite partly replaced by silica or calcite) — fossil

Fossilized bone fragment

Mineralized vertebrate bone, commonly hydroxyapatite partly replaced by silica or calcite

Fossilized bivalve shell fragment (Calcitic mollusk shell, commonly Bivalvia; exact genus cannot be determined from the image) — fossil

Fossilized bivalve shell fragment

Calcitic mollusk shell, commonly Bivalvia; exact genus cannot be determined from the image

Fossilized marine shell fragment (Likely a bivalve or gastropod shell preserved as calcite (CaCO₃)) — fossil

Fossilized marine shell fragment

Likely a bivalve or gastropod shell preserved as calcite (CaCO₃)

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

Script Jasper

Silicon Dioxide (SiO2) with impurities

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Geode / Fossilized Gastropod or Shell Cast (Silicon dioxide (Quartz) replacement / fossil mold) — sedimentary

Geode / Fossilized Gastropod or Shell Cast

Silicon dioxide (Quartz) replacement / fossil mold

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (variously known as Flint or Microcrystalline Quartz) (Silicon dioxide (SiO2)) — sedimentary

Chert (variously known as Flint or Microcrystalline Quartz)

Silicon dioxide (SiO2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Likely brown jasper or iron-stained chert (Microcrystalline quartz (SiO₂), with iron-oxide inclusions) — mineral

Likely brown jasper or iron-stained chert

Microcrystalline quartz (SiO₂), with iron-oxide inclusions

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

Black Chert (Flint)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Ironstone Concretion (Ferruginous Siltstone/Ironstone (Fe2O3)) — sedimentary

Ironstone Concretion

Ferruginous Siltstone/Ironstone (Fe2O3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Megalodon Shark Tooth (Otodus megalodon) — fossil

Megalodon Shark Tooth

Otodus megalodon

Fossil Coral (Rugosa or Tabulata / Hexacorallia (replaced with silica or calcite)) — fossil

Fossil Coral

Rugosa or Tabulata / Hexacorallia (replaced with silica or calcite)

Chert (Jasper/Carnelian variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Carnelian variety)

Microcrystalline Quartz (SiO2)