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

Coral Rock

Rock Salt

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Eulysite

Hornfels

Epidosite

Albitite

Metabasalt

Schist

Seashell Fragment (Calcium Carbonate (CaCO3) in the form of Aragonite or Calcite) — mineral

Seashell Fragment

Calcium Carbonate (CaCO3) in the form of Aragonite or Calcite

Fine-grained dark metamorphic rock, likely slate or phyllite (Slate/phyllite, composed mainly of mica-group minerals, quartz, and clay-derived minerals) — metamorphic

Fine-grained dark metamorphic rock, likely slate or phyllite

Slate/phyllite, composed mainly of mica-group minerals, quartz, and clay-derived minerals

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

Dyed Dalmatian Stone

Aplite (Alkali-feldspar granite) with Arfvedsonite

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)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Dragon Blood Jasper (SiO2) — mineral

Dragon Blood Jasper

SiO2

Granite / Quartz with Mica inclusion (Granite (Plutonic Igneous Rock)) — igneous

Granite / Quartz with Mica inclusion

Granite (Plutonic Igneous Rock)

Quartzite (Metamorphic Quartz-rich Rock) — metamorphic

Quartzite

Metamorphic Quartz-rich Rock

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Quartz (Agate/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Agate/Chalcedony variety)

Silicon Dioxide (SiO2)

Sandstone (Quartz Sandstone (predominantly)) — Sedimentary

Sandstone

Quartz Sandstone (predominantly)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Slate (Foliated Metamorphic Rock (composed primarily of silica and alumina with iron and magnesium)) — metamorphic

Slate

Foliated Metamorphic Rock (composed primarily of silica and alumina with iron and magnesium)

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

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Ruby (Pinkish-Red) (Corundum (Al2O3 with Chromium trace)) — mineral

Ruby (Pinkish-Red)

Corundum (Al2O3 with Chromium trace)

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Granite Boulder (Intrusive Igneous Rock) — igneous

Granite Boulder

Intrusive Igneous Rock

Weathered slate (Slate, a fine-grained metamorphic rock composed mainly of mica, chlorite, and quartz) — metamorphic

Weathered slate

Slate, a fine-grained metamorphic rock composed mainly of mica, chlorite, and quartz

Amethyst (SiO2 (Silicon Dioxide with iron impurities)) — mineral

Amethyst

SiO2 (Silicon Dioxide with iron impurities)

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]

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)

Granite Pebbles (Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8), and Mica)) — igneous

Granite Pebbles

Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8), and Mica)

Starfish Fossil (Asteroidea fossil) — fossil

Starfish Fossil

Asteroidea fossil

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

Bauxite

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

Botryoidal Chalcedony (Agate) (Cryptocrystalline Quartz (SiO2)) — mineral

Botryoidal Chalcedony (Agate)

Cryptocrystalline Quartz (SiO2)

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

Generic Rock Fragment (Rock Fragment) — sedimentary

Generic Rock Fragment

Rock Fragment

Weathered sandstone fragment (Quartz-rich sandstone, possibly ferruginous sandstone) — sedimentary

Weathered sandstone fragment

Quartz-rich sandstone, possibly ferruginous sandstone

Quartzite (Yellow/Tan) (Metamorphic Rock composed of Quartz (SiO₂)) — metamorphic

Quartzite (Yellow/Tan)

Metamorphic Rock composed of Quartz (SiO₂)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Red Sandstone (Arenite with Iron Oxide (Hematite) cement) — sedimentary

Red Sandstone

Arenite with Iron Oxide (Hematite) cement

Likely quartz-rich stone (possibly quartzite) (Quartzite, composed predominantly of quartz (SiO₂)) — metamorphic

Likely quartz-rich stone (possibly quartzite)

Quartzite, composed predominantly of quartz (SiO₂)

Lapis Lazuli (Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Marble (Recrystallized Carbonate Rock (CaCO3)) — metamorphic

Marble

Recrystallized Carbonate Rock (CaCO3)

Quartzite (Quartzite) — metamorphic

Quartzite

Quartzite

Schist (specifically Mica Schist) (Mica Schist (primarily composed of Muscovite KAl2(AlSi3O10)(OH)2 and Biotite)) — metamorphic

Schist (specifically Mica Schist)

Mica Schist (primarily composed of Muscovite KAl2(AlSi3O10)(OH)2 and Biotite)

Banded gneiss pebble (Gneiss, a foliated metamorphic rock composed mainly of quartz, feldspar, and dark biotite or amphibole) — metamorphic

Banded gneiss pebble

Gneiss, a foliated metamorphic rock composed mainly of quartz, feldspar, and dark biotite or amphibole

Pink Granite (Phaneritic Felsic Igneous Rock (composed primarily of Orthoclase Feldspar and Quartz)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of Orthoclase Feldspar and Quartz)

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

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Eclogite (Eclogite (composed primarily of Omphacite and Garnet)) — metamorphic

Eclogite

Eclogite (composed primarily of Omphacite and Garnet)

Mica schist (Muscovite–biotite schist, composed mainly of mica and quartz) — metamorphic

Mica schist

Muscovite–biotite schist, composed mainly of mica and quartz