Rock Identifier

Category

Metamorphic Mineral

Browse metamorphic mineral specimens identified by the Rock Identifier community.

Learn about Metamorphic Mineral in the encyclopedia

Metagabbro

Metabasalt

Glauconite

Eulysite

Hutcheonite

Halite

Anthracite

Eltyubyuite

Metaquartzite

Slate

Sperrylite

Paracelsian

Schist (likely Mica Schist) (Mica Schist) — metamorphic

Schist (likely Mica Schist)

Mica Schist

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

Epidote

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

Banded marble (probable calcite marble) (Calcite marble, CaCO₃; possibly impure dolomitic marble) — metamorphic

Banded marble (probable calcite marble)

Calcite marble, CaCO₃; possibly impure dolomitic marble

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Tumbled rhodonite (Rhodonite, manganese inosilicate (MnSiO₃), commonly mixed with quartz and manganese oxides) — metamorphic

Tumbled rhodonite

Rhodonite, manganese inosilicate (MnSiO₃), commonly mixed with quartz and manganese oxides

Likely mica-rich metamorphic rock (schist) (Mica schist, probably biotite–muscovite schist; exact identification requires closer examination) — metamorphic

Likely mica-rich metamorphic rock (schist)

Mica schist, probably biotite–muscovite schist; exact identification requires closer examination

Serpentine (likely antigorite-rich serpentinite fragment) (Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄) — metamorphic

Serpentine (likely antigorite-rich serpentinite fragment)

Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Emerald (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald

Beryl (Be3Al2(SiO3)6)

Mixed Mineral Collection (Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)) — mineral

Mixed Mineral Collection

Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)

Potassium Feldspar (Orthoclase / Microcline) (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Potassium Feldspar (Orthoclase / Microcline)

KAlSi3O8 (Potassium Aluminum Silicate)

Strawberry Quartz (Quartz with Hematite inclusions) (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)) — mineral

Strawberry Quartz (Quartz with Hematite inclusions)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Quartz (Agate/Jasper pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Agate/Jasper pebble)

Silicon Dioxide (SiO2)

Green Schist (Greenschist) (Greenschist facies metamorphic rock) — metamorphic

Green Schist (Greenschist)

Greenschist facies metamorphic rock

Pink-orange mineral fragment, likely feldspar (possibly potassium feldspar) (Likely orthoclase or microcline, KAlSi₃O₈; identification from the image is uncertain) — mineral

Pink-orange mineral fragment, likely feldspar (possibly potassium feldspar)

Likely orthoclase or microcline, KAlSi₃O₈; identification from the image is uncertain

Mica schist fragment (Biotite–quartz–feldspar schist) — metamorphic

Mica schist fragment

Biotite–quartz–feldspar schist

Greenstone / Greenschist (Chlorite schist / Epidiorite) — metamorphic

Greenstone / Greenschist

Chlorite schist / Epidiorite

Calcite (Calcium carbonate (CaCO3)) — mineral

Calcite

Calcium carbonate (CaCO3)

Feldspar (Feldspar (Orthoclase/Microcline)) — mineral

Feldspar

Feldspar (Orthoclase/Microcline)

Pink Quartz (Silicon Dioxide (SiO2)) — mineral

Pink Quartz

Silicon Dioxide (SiO2)

Pink Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Pink Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Yellow Beryl (Beryl (Be3Al2(SiO3)6)) — mineral

Yellow Beryl

Beryl (Be3Al2(SiO3)6)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Quartz vein in mica-rich host rock (Milky quartz (SiO₂) in a mica-rich metamorphic matrix, likely schist) — metamorphic

Quartz vein in mica-rich host rock

Milky quartz (SiO₂) in a mica-rich metamorphic matrix, likely schist

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Greenstone (likely serpentine-rich rock) (Serpentinite, composed mainly of serpentine-group minerals) — metamorphic

Greenstone (likely serpentine-rich rock)

Serpentinite, composed mainly of serpentine-group minerals

Black tourmaline (schorl), possibly rough (Schorl tourmaline, NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) — mineral

Black tourmaline (schorl), possibly rough

Schorl tourmaline, NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

Green Aventurine (Aventurine Quartz (SiO2 + Fuchsite mica)) — Mineral

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Likely garnet-bearing rock (possibly almandine garnet in dark matrix) (Garnet, probably almandine (Fe₃Al₂(SiO₄)₃); host rock is not identifiable from this image) — metamorphic

Likely garnet-bearing rock (possibly almandine garnet in dark matrix)

Garnet, probably almandine (Fe₃Al₂(SiO₄)₃); host rock is not identifiable from this image

Biotite Schist (Biotite Schist) — metamorphic

Biotite Schist

Biotite Schist

Small brown mineral fragment (Unidentified; the image lacks enough detail for a reliable species-level identification) — mineral

Small brown mineral fragment

Unidentified; the image lacks enough detail for a reliable species-level identification

Chalcopyrite (Peacock Ore) (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite (Peacock Ore)

Copper Iron Sulfide (CuFeS2)

Potassium Feldspar (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar

Orthoclase (KAlSi3O8)

Schist or Gneiss pebble (Metamorphic rock (Schist/Gneiss)) — metamorphic

Schist or Gneiss pebble

Metamorphic rock (Schist/Gneiss)

Red garnet crystal cluster (Most likely almandine garnet, Fe₃Al₂(SiO₄)₃; exact species cannot be confirmed from the image alone.) — mineral

Red garnet crystal cluster

Most likely almandine garnet, Fe₃Al₂(SiO₄)₃; exact species cannot be confirmed from the image alone.

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)

Gneiss (Gneiss (Metamorphic rock)) — metamorphic

Gneiss

Gneiss (Metamorphic rock)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

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

Muscovite Mica

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