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

Mangano Calcite (Manganocalcite (Ca,Mn)CO3) — mineral

Mangano Calcite

Manganocalcite (Ca,Mn)CO3

Garnet (Almandine) (Almandine (Fe3Al2(SiO4)3)) — mineral

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Chert / Fossiliferous Limestone (Sedimentary Chert (often containing CaCO3 or SiO2 replacements)) — sedimentary

Chert / Fossiliferous Limestone

Sedimentary Chert (often containing CaCO3 or SiO2 replacements)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Fossilized Coral (Rugosa / Tabulata coral fossils replaced by silica (Chalcedony/Quartz)) — fossil

Fossilized Coral

Rugosa / Tabulata coral fossils replaced by silica (Chalcedony/Quartz)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Fossilized tooth or bone fragment (Indeterminate fossil; possibly a small fossil tooth or mineralized bone, exact identification requires microscopy) — fossil

Fossilized tooth or bone fragment

Indeterminate fossil; possibly a small fossil tooth or mineralized bone, exact identification requires microscopy

Gneiss (specifically Banded Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

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

Chert / Flint

Silicon Dioxide (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO2)

Flint (Microcrystalline quartz (SiO2)) — sedimentary

Flint

Microcrystalline quartz (SiO2)

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

Flint

SiO2 (Microcrystalline Quartz / Chert)

Flint (SiO2 (Cryptocrystalline Quartz)) — sedimentary

Flint

SiO2 (Cryptocrystalline Quartz)

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

Flint

SiO2 (Microcrystalline Quartz / Chert)

Flint (Chert) (Silicon dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Flint (Chert)

Silicon dioxide (SiO2) - Cryptocrystalline Quartz

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

Chert (or Jasper)

Microcrystalline Quartz (SiO2)

Chert (Chalcedony/Common Opal) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chalcedony/Common Opal)

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert / Jasper (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Jasper

Cryptocrystalline Quartz (SiO2)

Concretion (Sandstone) (Sandstone Concretion) — sedimentary

Concretion (Sandstone)

Sandstone Concretion

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert Pebble with Quartz Veins (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble with Quartz Veins

Microcrystalline Quartz (SiO2)

Fossilized Shark Tooth (Chondrichthyes tooth) — fossil

Fossilized Shark Tooth

Chondrichthyes tooth

Pyrite (likely massive pyrite specimen) (Iron disulfide, FeS₂; cubic/isometric sulfide mineral) — mineral

Pyrite (likely massive pyrite specimen)

Iron disulfide, FeS₂; cubic/isometric sulfide mineral

Banded Chert (Iron-stained) (Microcrystalline Quartz (SiO2) with Iron Oxides) — sedimentary

Banded Chert (Iron-stained)

Microcrystalline Quartz (SiO2) with Iron Oxides

Gneiss (Quartz–feldspar–mica gneiss) — metamorphic

Gneiss

Quartz–feldspar–mica gneiss

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Blue Zircon (Zircon (Zirconium Silicate, ZrSiO4)) — gemstone

Blue Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Sandstone Concretion (Carbonate-cemented Sandstone Concretion) — sedimentary

Sandstone Concretion

Carbonate-cemented Sandstone Concretion

Banded Gneiss (Gneiss (Felsic to Mafic Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Felsic to Mafic Metamorphic Rock)

Fossilized bivalve shell fragment (Pectinid or related scallop bivalve; shell originally composed mainly of calcite (CaCO₃)) — fossil

Fossilized bivalve shell fragment

Pectinid or related scallop bivalve; shell originally composed mainly of calcite (CaCO₃)

Hematite (Iron(III) oxide, Fe2O3) — mineral

Hematite

Iron(III) oxide, Fe2O3

Feldspar (Potassium Feldspar (KAlSi3O8)) — mineral

Feldspar

Potassium Feldspar (KAlSi3O8)

Fluorite Geode (Calcium Fluoride (CaF2)) — mineral

Fluorite Geode

Calcium Fluoride (CaF2)

Banded gneiss (Gneiss, likely quartz–feldspar–mica gneiss) — metamorphic

Banded gneiss

Gneiss, likely quartz–feldspar–mica gneiss

Magnetite / Ironstone Pebble (Magnetite (Fe3O4)) — mineral

Magnetite / Ironstone Pebble

Magnetite (Fe3O4)

Chert (often called Flint when dark or found in chalk) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint when dark or found in chalk)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Banded gneiss (Gneiss, commonly quartz–feldspar–mica gneiss) — metamorphic

Banded gneiss

Gneiss, commonly quartz–feldspar–mica gneiss

Shale with Iron Staining (Fissile Mudrock (Sedimentary Rock)) — sedimentary

Shale with Iron Staining

Fissile Mudrock (Sedimentary Rock)

Likely brown chert (flint) (Microcrystalline quartz (SiO₂), variety chert/flint) — sedimentary

Likely brown chert (flint)

Microcrystalline quartz (SiO₂), variety chert/flint

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

Black Flint

Chert (Microcrystalline Quartz, SiO2)