Rock Identifier

Category

Mineral (Metamorphic Pseudomorph)

Browse mineral (metamorphic pseudomorph) specimens identified by the Rock Identifier community.

Learn about Mineral (Metamorphic Pseudomorph) in the encyclopedia

Metabasalt

Eltyubyuite

Metagabbro

Calc-Silicate Rock

Calc-Silicate Rock

Paracelsian

Kokchetavite

Celsian

Gneiss

Schist

Serpentinite

Calc-schist

Granulite

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Marble (Metamorphosed Limestone (calcite formulation CaCO3)) — metamorphic

Marble

Metamorphosed Limestone (calcite formulation CaCO3)

Greenschist (or Serpentinite with Manganese Dendrites) (Greenschist facies metamorphic rock) — metamorphic

Greenschist (or Serpentinite with Manganese Dendrites)

Greenschist facies metamorphic rock

Likely slate fragment (Slate; fine-grained foliated metamorphic rock, commonly quartz–mica–chlorite rich) — metamorphic

Likely slate fragment

Slate; fine-grained foliated metamorphic rock, commonly quartz–mica–chlorite rich

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

Gneiss

Gneiss (High-grade metamorphic rock)

Mica Schist (Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2 mixed with SiO2)) — metamorphic

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2 mixed with SiO2)

Pyrite in Quartz Matrix (Iron Disulfide (FeS2) in Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz Matrix

Iron Disulfide (FeS2) in Silicon Dioxide (SiO2)

Pyrite (Iron Pyrites) (Iron Sulfide (FeS2)) — mineral

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

Slate (Foliated Metamorphic Rock (composed mainly of clay minerals or micas)) — metamorphic

Slate

Foliated Metamorphic Rock (composed mainly of clay minerals or micas)

Gneiss (Metamorphic Gneiss) — metamorphic

Gneiss

Metamorphic Gneiss

Coarse-grained granite or granitic gneiss (Granite; primarily quartz, potassium feldspar, plagioclase, and biotite/hornblende) — igneous

Coarse-grained granite or granitic gneiss

Granite; primarily quartz, potassium feldspar, plagioclase, and biotite/hornblende

Rhodonite (Rhodonite (MnSiO3)) — mineral

Rhodonite

Rhodonite (MnSiO3)

Schist (Schist (various mineral compositions)) — metamorphic

Schist

Schist (various mineral compositions)

Garnet Schist (Almandine-mica schist) — metamorphic

Garnet Schist

Almandine-mica schist

Potassium Feldspar (Orthoclase) (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Tumbled metamorphic pebble, likely gneiss (Foliated gneiss; commonly quartz, feldspar, mica, and amphibole) — metamorphic

Tumbled metamorphic pebble, likely gneiss

Foliated gneiss; commonly quartz, feldspar, mica, and amphibole

Foliated Metamorphic Rock (likely Gneiss or Schist) (Gneissic Metamorphic Rock) — metamorphic

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

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

Granitic Gneiss

Gneiss (High-grade metamorphic rock)

Moonstone (Tumbled) (Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite) — mineral

Moonstone (Tumbled)

Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Greenschist (Greenschist (composed mainly of actinolite/tremolite, chlorite, and epidote)) — metamorphic

Greenschist

Greenschist (composed mainly of actinolite/tremolite, chlorite, and epidote)

Quartz (Orange/Pink variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Orange/Pink variety)

Silicon Dioxide (SiO2)

Green Schist (Greenschist (containing Chlorite, Actinolite, and Epidote)) — metamorphic

Green Schist

Greenschist (containing Chlorite, Actinolite, and Epidote)

Magnetite (Lodestone) (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite (Lodestone)

Iron(II,III) oxide (Fe3O4)

Black Tourmaline (Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)) — Mineral

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Schist (Schist) — Metamorphic

Schist

Schist

Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

Biotite-bearing gneiss or schist (Quartz–feldspar–biotite metamorphic rock) — metamorphic

Biotite-bearing gneiss or schist

Quartz–feldspar–biotite metamorphic rock

Amphibolite / Biotite Schist (Amphibolite (rich in Hornblende and Plagioclase feldspar)) — metamorphic

Amphibolite / Biotite Schist

Amphibolite (rich in Hornblende and Plagioclase feldspar)

Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

Yellow Aventurine (Quartz with inclusion minerals (SiO2)) — mineral

Yellow Aventurine

Quartz with inclusion minerals (SiO2)

Biotite Schist (Biotite Schist) — Metamorphic

Biotite Schist

Biotite Schist

Slate (Slate (Metamorphic rock)) — metamorphic

Slate

Slate (Metamorphic rock)

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

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Magnetite / Ironstone (Magnetite (Fe3O4)) — mineral

Magnetite / Ironstone

Magnetite (Fe3O4)

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite in Quartz Matrix (Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

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

Blue Quartz

Quartz (Silicon Dioxide) with blue inclusions (SiO2)

Granitic Gneiss Pebble (Gneiss (felsic metamorphic rock)) — metamorphic

Granitic Gneiss Pebble

Gneiss (felsic metamorphic rock)

Schist (Diamond Drill Core) (Mica Schist) — metamorphic

Schist (Diamond Drill Core)

Mica Schist