Rock Identifier

Category

Metamorphic (Likely Gneiss Or Schist Based On Texture)

Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.

Learn about Metamorphic (Likely Gneiss Or Schist Based On Texture) in the encyclopedia

Gneiss

Schist

Tourmaline Schist

Tourmaline Schist

Staurolite Schist

Staurolite Schist

Graphite Schist

Graphite Schist

Paragonite Schist

Paragonite Schist

Chlorite Schist

Chlorite Schist

Hornblende Schist

Hornblende Schist

Garnet Schist

Mica Schist

Talc Schist

Biotite Schist

Pyrite-bearing metamorphic rock (likely schist or gneiss) (Pyrite (FeS₂) in a quartz–mica-rich host rock) — metamorphic

Pyrite-bearing metamorphic rock (likely schist or gneiss)

Pyrite (FeS₂) in a quartz–mica-rich host rock

Muscovite (Muscovite, KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

Muscovite, KAl2(AlSi3O10)(OH)2

Schist (Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])) — metamorphic

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Gneiss (Banded orthogneiss or paragneiss, typically quartz–feldspar–mica bearing) — metamorphic

Gneiss

Banded orthogneiss or paragneiss, typically quartz–feldspar–mica bearing

Fuchsite (Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Iron-stained garnet-bearing rock, possibly almandine garnet (Garnet-group silicate, likely almandine (Fe₃Al₂Si₃O₁₂), in a quartz–iron-oxide matrix) — mineral

Iron-stained garnet-bearing rock, possibly almandine garnet

Garnet-group silicate, likely almandine (Fe₃Al₂Si₃O₁₂), in a quartz–iron-oxide matrix

Mica Schist (Mica Schist (predominantly Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Quartz-rich metamorphic rock, likely quartzite (Quartzite (mostly microcrystalline quartz, SiO₂), possibly mica-bearing) — metamorphic

Quartz-rich metamorphic rock, likely quartzite

Quartzite (mostly microcrystalline quartz, SiO₂), possibly mica-bearing

Garnet (almandine or pyrope variety) (Silicate mineral Group: (Fe, Mg, Mn, Ca)3(Al, Fe, Cr)2(SiO4)3) — mineral

Garnet (almandine or pyrope variety)

Silicate mineral Group: (Fe, Mg, Mn, Ca)3(Al, Fe, Cr)2(SiO4)3

Schist (Mica Schist (primarily Muscovite or Biotite sheet silicates)) — metamorphic

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Muscovite Mica (Muscovite - KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(F,OH)2

Quartz-rich rock with chlorite/epidote vein (Milky quartz with green chlorite or epidote; exact identification requires testing) — metamorphic

Quartz-rich rock with chlorite/epidote vein

Milky quartz with green chlorite or epidote; exact identification requires testing

Muscovite Mica (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Likely biotite-bearing metamorphic rock (schist or gneiss) (Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica) — metamorphic

Likely biotite-bearing metamorphic rock (schist or gneiss)

Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Mica Schist (Mica Schist) — metamorphic

Mica Schist

Mica Schist

Schist (Crystalline Metamorphic Schist) — metamorphic

Schist

Crystalline Metamorphic Schist

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

Gneiss Pebble

Gneiss (Metamorphic Foliated Rock)

Gneiss (specifically a Hornblende Gneiss or Micaceous Gneiss) (Gneiss (metamorphic rock composed primarily of quartz, feldspar, and mafic minerals)) — metamorphic

Gneiss (specifically a Hornblende Gneiss or Micaceous Gneiss)

Gneiss (metamorphic rock composed primarily of quartz, feldspar, and mafic minerals)

Gneissic boulder (Gneiss, typically quartz–feldspar–mica gneiss) — metamorphic

Gneissic boulder

Gneiss, typically quartz–feldspar–mica gneiss

Garnet (Almandine/Pyrope series) (Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)) — mineral

Garnet (Almandine/Pyrope series)

Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)

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

Gneiss pebble

Banded gneiss, commonly quartz–feldspar–biotite gneiss

Mica Schist (Mica Schist (Silicate rock)) — metamorphic

Mica Schist

Mica Schist (Silicate rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Mica Schist with Vein (Mica Schist) — metamorphic

Mica Schist with Vein

Mica Schist

Blue-gray quartz-bearing metamorphic rock (likely gneiss or schist) (Quartz–feldspar–mica rock; exact identification requires testing) — metamorphic

Blue-gray quartz-bearing metamorphic rock (likely gneiss or schist)

Quartz–feldspar–mica rock; exact identification requires testing

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

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

Banded Gneiss

Gneiss (High-grade metamorphic rock)

Likely polished garnet (Garnet group; probably almandine, iron-aluminum silicate (Fe₃Al₂Si₃O₁₂)) — gemstone

Likely polished garnet

Garnet group; probably almandine, iron-aluminum silicate (Fe₃Al₂Si₃O₁₂)

Banded metamorphic rock, likely gneiss (Biotite–quartz–feldspar gneiss, possibly amphibolite-bearing) — metamorphic

Banded metamorphic rock, likely gneiss

Biotite–quartz–feldspar gneiss, possibly amphibolite-bearing

Schist (Mica Schist (Metamorphic Rock)) — metamorphic

Schist

Mica Schist (Metamorphic Rock)

Schist (Mica Schist (primarily composed of quartz, feldspar, and mica)) — metamorphic

Schist

Mica Schist (primarily composed of quartz, feldspar, and mica)

Garnet (Garnet group species (likely Almandine, Fe3Al2(SiO4)3)) — mineral

Garnet

Garnet group species (likely Almandine, Fe3Al2(SiO4)3)

Muscovite Mica (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Garnet (likely Almandine or Pyrope) (Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)) — mineral

Garnet (likely Almandine or Pyrope)

Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)

Muscovite Mica (KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Mica Schist (Mica Schist (primarily Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

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

Gneiss

High-grade regional metamorphic rock (Foliated)

Biotite Gneiss (Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)) — metamorphic

Biotite Gneiss

Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)