Rock Identifier

Category

Sedimentary And Metamorphic

Browse sedimentary and metamorphic specimens identified by the Rock Identifier community.

Learn about Sedimentary And Metamorphic in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Ironstone

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Banded metamorphic rock, likely gneiss (Biotite–quartz–feldspar gneiss, possibly migmatitic) — metamorphic

Banded metamorphic rock, likely gneiss

Biotite–quartz–feldspar gneiss, possibly migmatitic

Banded gneiss (polished/tumbled cobble) (Gneiss, composed chiefly of quartz, feldspar, and mica/amphibole) — metamorphic

Banded gneiss (polished/tumbled cobble)

Gneiss, composed chiefly of quartz, feldspar, and mica/amphibole

Garnet Amphibolite (or Garnet Gneiss) (Garnet amphibolite / Garnet-bearing metamorphic rock) — metamorphic

Garnet Amphibolite (or Garnet Gneiss)

Garnet amphibolite / Garnet-bearing metamorphic rock

Gneiss with Quartz Vein (Metamorphic Gneiss with Quartz (SiO2) and Feldspar Injection) — metamorphic

Gneiss with Quartz Vein

Metamorphic Gneiss with Quartz (SiO2) and Feldspar Injection

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Biotite Schist (Metamorphic Rock (Schist)) — metamorphic

Biotite Schist

Metamorphic Rock (Schist)

Banded Gneiss Pebble (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

Granitic Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Granitic Gneiss

Gneiss (Metamorphic Rock)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Banded gneiss (likely weathered orthogneiss) (Gneiss; predominantly quartz–feldspar–mica, with possible iron-oxide staining) — metamorphic

Banded gneiss (likely weathered orthogneiss)

Gneiss; predominantly quartz–feldspar–mica, with possible iron-oxide staining

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

Banded gneiss cobble

Gneiss, commonly quartz–feldspar–biotite gneiss

Weathered layered metamorphic rock, likely schist or phyllite (Micaceous quartz–feldspar schist/phyllite; exact identification requires a fresh surface and testing) — metamorphic

Weathered layered metamorphic rock, likely schist or phyllite

Micaceous quartz–feldspar schist/phyllite; exact identification requires a fresh surface and testing

Slate (Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)) — metamorphic

Slate

Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)

Anthracite Coal (Anthracite (Metamorphic Coal)) — sedimentary

Anthracite Coal

Anthracite (Metamorphic Coal)

River Pebble (Gneiss/Schist mix) (Metamorphic rock aggregate) — metamorphic

River Pebble (Gneiss/Schist mix)

Metamorphic rock aggregate

Slate (Metamorphic Mudstone / Shale) — metamorphic

Slate

Metamorphic Mudstone / Shale

Red Jasper (Red Jasper (SiO2)) — sedimentary

Red Jasper

Red Jasper (SiO2)

Gneiss (Gneiss (Foliated Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Foliated Metamorphic Rock)

Garnet Schist (Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)) — metamorphic

Garnet Schist

Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

Milky quartz fragment (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Pyrite Cubes in Matrix (Iron Disulfide (FeS2) in Host Matrix) — mineral side rock

Pyrite Cubes in Matrix

Iron Disulfide (FeS2) in Host Matrix

mineral side rock

Tumbled limestone or marble (Calcite-rich carbonate rock; likely limestone (CaCO₃), possibly marble) — metamorphic

Tumbled limestone or marble

Calcite-rich carbonate rock; likely limestone (CaCO₃), possibly marble

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Gneiss (specifically Granitic Gneiss) (Gneissic Metamorphic Rock) — metamorphic

Gneiss (specifically Granitic Gneiss)

Gneissic Metamorphic Rock

Banded gneiss (Foliated quartz–feldspar gneiss, likely biotite-bearing) — metamorphic

Banded gneiss

Foliated quartz–feldspar gneiss, likely biotite-bearing

Quartzite (Metamorphic Rock consisting chiefly of Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic Rock consisting chiefly of Quartz (SiO2)

Rhodonite (Rhodonite (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Green Kyanite (Kyanite (Al2SiO5)) — mineral

Green Kyanite

Kyanite (Al2SiO5)

Magnetite with Quartz (Magnetite (Fe3O4)) — mineral

Magnetite with Quartz

Magnetite (Fe3O4)

Banded Slate (Slate (Metamorphosed Siltstone/Mudstone)) — metamorphic

Banded Slate

Slate (Metamorphosed Siltstone/Mudstone)

Banded gneiss (likely biotite-bearing) (Gneiss; quartz–feldspar–mica assemblage, with possible iron-oxide staining) — metamorphic

Banded gneiss (likely biotite-bearing)

Gneiss; quartz–feldspar–mica assemblage, with possible iron-oxide staining

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)

Gneiss (Gneiss (Metamorphic rock)) — metamorphic

Gneiss

Gneiss (Metamorphic rock)

Slate (Slate (Metamorphic Rock)) — metamorphic

Slate

Slate (Metamorphic Rock)

Gneiss (Foliated Metamorphic Rock) — metamorphic

Gneiss

Foliated Metamorphic Rock

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Mica Schist (Schist (biotite/muscovite schist)) — metamorphic

Mica Schist

Schist (biotite/muscovite schist)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)