Rock Identifier

Category

Sedimentary Or Metamorphic

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

Learn about Sedimentary Or Metamorphic in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Ironstone

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Tumbled Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Tumbled Rose Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz (Milky or Yellow variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Yellow variety)

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

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

Magnetite

Iron(II,III) oxide (Fe3O4)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Quartzite (Metamorphic rock (SiO2)) — metamorphic

Quartzite

Metamorphic rock (SiO2)

Gneiss (Foliated Metamorphic Rock) — metamorphic

Gneiss

Foliated Metamorphic Rock

Schist (Metamorphic Rock (Schist)) — metamorphic

Schist

Metamorphic Rock (Schist)

Gneiss (Gneiss (Metamorphic rock)) — metamorphic

Gneiss

Gneiss (Metamorphic rock)

Tumbled banded quartzite or jasper (Silica-rich quartzite; likely iron-oxide-stained quartz (SiO₂)) — metamorphic

Tumbled banded quartzite or jasper

Silica-rich quartzite; likely iron-oxide-stained quartz (SiO₂)

Banded gneiss (Gneiss; typically quartz–feldspar–biotite ± amphibole) — metamorphic

Banded gneiss

Gneiss; typically quartz–feldspar–biotite ± amphibole

Weathered brown rock, likely sandstone or iron-rich quartzite (Indeterminate; probable quartz-rich sandstone (quartz, feldspar, iron oxides)) — sedimentary

Weathered brown rock, likely sandstone or iron-rich quartzite

Indeterminate; probable quartz-rich sandstone (quartz, feldspar, iron oxides)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Pyrite (FeS₂)) — Mineral

Pyrite

Iron Pyrite (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)

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

Garnet Amphibolite (or Garnet Gneiss)

Garnet amphibolite / Garnet-bearing metamorphic rock

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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)

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

Agate

Silicon Dioxide (Chalcedony), SiO2

Anthracite Coal (Anthracite (Metamorphic Coal)) — sedimentary

Anthracite Coal

Anthracite (Metamorphic Coal)

Biotite-rich gneiss (Foliated quartz–feldspar–mica gneiss; mainly quartz, plagioclase/alkali feldspar, and biotite) — metamorphic

Biotite-rich gneiss

Foliated quartz–feldspar–mica gneiss; mainly quartz, plagioclase/alkali feldspar, and biotite

Likely slate fragment (Slate; predominantly fine-grained mica/clay minerals and quartz) — metamorphic

Likely slate fragment

Slate; predominantly fine-grained mica/clay minerals and quartz

Biotite-rich gneiss (Gneiss, likely quartz–feldspar–biotite gneiss) — metamorphic

Biotite-rich gneiss

Gneiss, likely quartz–feldspar–biotite gneiss

Banded gneiss (Orthogneiss or paragneiss, chiefly quartz–feldspar–mica) — metamorphic

Banded gneiss

Orthogneiss or paragneiss, chiefly quartz–feldspar–mica

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

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

Likely mica-rich schist (possibly phyllite) (Muscovite–biotite schist; exact identification requires examination of a fresh surface) — metamorphic

Likely mica-rich schist (possibly phyllite)

Muscovite–biotite schist; exact identification requires examination of a fresh surface

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