Rock Identifier

Category

Metamorphic Rock (Specifically A Rock Composed Of Minerals)

Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.

Learn about Metamorphic Rock (Specifically A Rock Composed Of Minerals) in the encyclopedia

Rock Gypsum

Rock Salt

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Eulysite

Hornfels

Albitite

Epidosite

Metabasalt

Schist

Quartz cluster, possibly druzy quartz on matrix (Quartz (SiO₂), likely microcrystalline to coarse crystalline; associated matrix uncertain) — mineral

Quartz cluster, possibly druzy quartz on matrix

Quartz (SiO₂), likely microcrystalline to coarse crystalline; associated matrix uncertain

Gravel and Pebbles (Unconsolidated rock fragments / detrital sediment) — sedimentary

Gravel and Pebbles

Unconsolidated rock fragments / detrital sediment

Gneiss (specifically Micaceous Gneiss) (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss (specifically Micaceous Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Greenstone / Serpentinite (Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)) — metamorphic

Greenstone / Serpentinite

Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Mica Schist (Schist (primarily muscovite and quartz)) — metamorphic

Mica Schist

Schist (primarily muscovite and quartz)

Pink Granite (Phaneritic Igneous Rock (composed of orthoclase, quartz, and mica)) — igneous

Pink Granite

Phaneritic Igneous Rock (composed of orthoclase, quartz, and mica)

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

Muscovite Mica

Muscovite / KAl2(AlSi3O10)(OH)2

Greenish quartz (likely prase/chalcedony) (Quartz, SiO₂; possibly green chalcedony or chlorite-included quartz) — mineral

Greenish quartz (likely prase/chalcedony)

Quartz, SiO₂; possibly green chalcedony or chlorite-included quartz

Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

Quartz Veined Rock (Likely Graywacke or Quartzite) (Silicon Dioxide (SiO2) veins in Metasedimentary matrix) — metamorphic

Quartz Veined Rock (Likely Graywacke or Quartzite)

Silicon Dioxide (SiO2) veins in Metasedimentary matrix

Serpentine (Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4) — metamorphic

Serpentine

Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4

Gneiss (Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)) — metamorphic

Gneiss

Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)

Green Aventurine (Silicon Dioxide (Quartz variety with Fuchsite inclusions - SiO2)) — mineral

Green Aventurine

Silicon Dioxide (Quartz variety with Fuchsite inclusions - SiO2)

Red Sandstone (Arenite (primarily quartz with iron oxide cement)) — sedimentary

Red Sandstone

Arenite (primarily quartz with iron oxide cement)

Starfish Fossil (Asteroidea fossil) — fossil

Starfish Fossil

Asteroidea fossil

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Stromatolite (Biogenic Sedimentary Rock (composed predominantly of CaCO3)) — sedimentary

Stromatolite

Biogenic Sedimentary Rock (composed predominantly of CaCO3)

Lapis Lazuli (Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Serpentinite (Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Greenstone / Greenschist (Greenschist facies metamorphic rock (composed primarily of chlorite, actinolite, and epidote)) — metamorphic

Greenstone / Greenschist

Greenschist facies metamorphic rock (composed primarily of chlorite, actinolite, and epidote)

Sandstone (Quartz Sandstone (predominantly)) — Sedimentary

Sandstone

Quartz Sandstone (predominantly)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Banded Gneiss (River Rock/Pebble) (Gneiss (specifically a banded variety often found as a river rock)) — Metamorphic Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Gneiss (specifically Banded Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

Slate (Metamorphic Rock (Fine-grained)) — metamorphic

Slate

Metamorphic Rock (Fine-grained)

Bauxite (AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)) — sedimentary

Bauxite

AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)

Quartz (Milky or Cloudy) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Cloudy)

Silicon Dioxide (SiO2)

Lapis Lazuli (Lazurite crystals on Marble) (Lazurite / (Na,Ca)8[(S,Cl,SO4,OH)2|(AlSiO4)6]) — metamorphic

Lapis Lazuli (Lazurite crystals on Marble)

Lazurite / (Na,Ca)8[(S,Cl,SO4,OH)2|(AlSiO4)6]

Greenschist (Chlorite schist (Metamorphic rock dominated by chlorite, epidote, and actinolite)) — metamorphic

Greenschist

Chlorite schist (Metamorphic rock dominated by chlorite, epidote, and actinolite)

Red-and-gray granitic gneiss (Gneiss, composed mainly of quartz, feldspar, and mica with iron-oxide staining) — metamorphic

Red-and-gray granitic gneiss

Gneiss, composed mainly of quartz, feldspar, and mica with iron-oxide staining

Likely gneiss (Gneiss, composed chiefly of quartz, feldspar, and mica/amphibole) — metamorphic

Likely gneiss

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

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

Banded Gneiss

Gneiss (Foliated Metamorphic Rock)

Serpentinite (often called Jade or Nephrite substitute) (Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)) — metamorphic

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Dyed Dalmatian Stone (Aplite (Alkali-feldspar granite) with Arfvedsonite) — igneous

Dyed Dalmatian Stone

Aplite (Alkali-feldspar granite) with Arfvedsonite

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Sandstone (specifically Cross-bedded Sandstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (specifically Cross-bedded Sandstone)

Arenite (composed primarily of SiO2)

Dalmatian Stone (Dalmatian Jasper (not a true jasper, typically an igneous perthite)) — igneous

Dalmatian Stone

Dalmatian Jasper (not a true jasper, typically an igneous perthite)

Pink Granite (Phaneritic Intrusive Igneous Rock (Granite)) — igneous

Pink Granite

Phaneritic Intrusive Igneous Rock (Granite)

Red Sandstone (Arenite (SiO2 with Fe2O3)) — sedimentary

Red Sandstone

Arenite (SiO2 with Fe2O3)