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

Sandstone (Sedimentary Rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite/Arkose)

Quartzite Cobble (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite Cobble

Metamorphosed Quartz Sandstone (SiO2)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Greenish metamorphic rock (possibly chlorite schist) (Chlorite-rich schist; exact identification is uncertain from the image) — metamorphic

Greenish metamorphic rock (possibly chlorite schist)

Chlorite-rich schist; exact identification is uncertain from the image

Tumbled banded gneiss (Quartz–feldspar–mica gneiss) — metamorphic

Tumbled banded gneiss

Quartz–feldspar–mica gneiss

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Red-and-black slate (Slate, a fine-grained metamorphic rock composed mainly of clay-derived mica minerals and quartz) — metamorphic

Red-and-black slate

Slate, a fine-grained metamorphic rock composed mainly of clay-derived mica minerals and quartz

Sandstone (Quartzose Pebble) (Clastic Sedimentary Rock (Litharenite/Quartz arenite)) — sedimentary

Sandstone (Quartzose Pebble)

Clastic Sedimentary Rock (Litharenite/Quartz arenite)

Slate (Slate (Metamorphic Rock)) — metamorphic

Slate

Slate (Metamorphic Rock)

Tumbled quartz-rich pebble (Microcrystalline quartz (SiO₂), possibly milky quartz or chalcedony) — mineral

Tumbled quartz-rich pebble

Microcrystalline quartz (SiO₂), possibly milky quartz or chalcedony

Weathered granitic rock (tentative) (Granite, composed mainly of quartz, feldspar, and mica) — igneous

Weathered granitic rock (tentative)

Granite, composed mainly of quartz, feldspar, and mica

Likely slate fragment (Slate; fine-grained foliated metamorphic rock composed mainly of clay minerals, quartz, and mica) — metamorphic

Likely slate fragment

Slate; fine-grained foliated metamorphic rock composed mainly of clay minerals, quartz, and mica

Likely blue-gray gneiss (Gneiss, a foliated metamorphic rock; exact mineral composition cannot be confirmed from the image) — metamorphic

Likely blue-gray gneiss

Gneiss, a foliated metamorphic rock; exact mineral composition cannot be confirmed from the image

Likely quartz-bearing rock fragment (Quartz (SiO₂), possibly with iron-oxide staining or other mineral inclusions) — mineral

Likely quartz-bearing rock fragment

Quartz (SiO₂), possibly with iron-oxide staining or other mineral inclusions

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

Quartzite (Quartzite (composed primarily of Quartz, SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of Quartz, SiO2)

Quartz (likely Herkimer Diamond style) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Herkimer Diamond style)

Silicon Dioxide (SiO2)

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

Gneiss

Gneiss (High-grade metamorphic rock)

Pink Granite (Phaneritic Quartz-Feldspar Plutonic Rock) — igneous

Pink Granite

Phaneritic Quartz-Feldspar Plutonic Rock

Unakite (Altered Granite (Granitic Metamorphic Rock)) — metamorphic

Unakite

Altered Granite (Granitic Metamorphic Rock)

Schist (Schist (metamorphic rock)) — metamorphic

Schist

Schist (metamorphic rock)

Granite cobble (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite cobble

Granite (composed primarily of Quartz, Feldspar, and Mica)

Quartzite (Metamorphic Rock (composed primarily of Quartz, SiO2)) — metamorphic

Quartzite

Metamorphic Rock (composed primarily of Quartz, SiO2)

Quartzite (River-worn) (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite (River-worn)

Metamorphic rock predominantly composed of Quartz (SiO2)

Quartzite (Metamorphic rock primarily composed of Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic rock primarily composed of Quartz (SiO2)

Quartzite Pebble (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic rock predominantly composed of Quartz (SiO2)

Quartzite (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic rock predominantly composed of Quartz (SiO2)

Red Quartzite River Stone (Metamorphic Rock (composed mainly of Quartz, SiO2)) — metamorphic

Red Quartzite River Stone

Metamorphic Rock (composed mainly of Quartz, SiO2)

Quartzite (Milky) (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite (Milky)

Metamorphic rock predominantly composed of Quartz (SiO2)

Yellow Quartzite Pebble (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Yellow Quartzite Pebble

Metamorphic rock predominantly composed of Quartz (SiO2)

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Quartz-veined metamorphic rock, likely quartzite or schist (Quartz-rich metamorphic rock with a milky-quartz vein; exact host rock is indeterminate from the photo) — metamorphic

Quartz-veined metamorphic rock, likely quartzite or schist

Quartz-rich metamorphic rock with a milky-quartz vein; exact host rock is indeterminate from the photo

Cowrie shell (Marine gastropod shell; likely a cowrie (family Cypraeidae), species not identifiable from the image) — fossil

Cowrie shell

Marine gastropod shell; likely a cowrie (family Cypraeidae), species not identifiable from the image

Stichtite in Serpentinite (Atlantisite) (Mg6Cr2CO16(OH)16·4H2O in Mg3Si2O5(OH)4) — metamorphic

Stichtite in Serpentinite (Atlantisite)

Mg6Cr2CO16(OH)16·4H2O in Mg3Si2O5(OH)4

Conglomerate (Conglomerate (Clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Clastic sedimentary rock)

Mixed stream gravel and cobbles (Polylithic alluvial deposit; individual clasts are not identifiable at this resolution) — sedimentary

Mixed stream gravel and cobbles

Polylithic alluvial deposit; individual clasts are not identifiable at this resolution

Green Druzy Quartz (Prasiolite) (Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)) — mineral

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Granite with Quartz Vein (Phaneritic intrusive igneous rock (Felsic)) — igneous

Granite with Quartz Vein

Phaneritic intrusive igneous rock (Felsic)

River Stone (composed of Siltstone/Basalt mixture) (Siltstone or microcrystalline Basalt pebble) — sedimentary

River Stone (composed of Siltstone/Basalt mixture)

Siltstone or microcrystalline Basalt pebble

Likely serpentine-rich rock (serpentinite) (Serpentinite, composed mainly of serpentine-group minerals (e.g., lizardite, antigorite, or chrysotile); exact identification is uncertain from the image alone) — metamorphic

Likely serpentine-rich rock (serpentinite)

Serpentinite, composed mainly of serpentine-group minerals (e.g., lizardite, antigorite, or chrysotile); exact identification is uncertain from the image alone

Slate (Foliated Metamorphic Rock (composed of quartz, illite, chlorite)) — metamorphic

Slate

Foliated Metamorphic Rock (composed of quartz, illite, chlorite)

Quartz with Mica/Host Rock (Silicon Dioxide (SiO2) with Phyllosilicates) — mineral

Quartz with Mica/Host Rock

Silicon Dioxide (SiO2) with Phyllosilicates