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

Granulite

Calc-schist

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish

Aventurine (Aventurine Quartz (SiO2)) — mineral

Aventurine

Aventurine Quartz (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

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

Magnetite

Iron(II,III) oxide (Fe3O4)

Rutilated Prehnite (Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions) — mineral

Rutilated Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

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

Epidote

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

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Green Aventurine (Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica

Rhodonite (Rhodonite, manganese inosilicate — MnSiO₃; the specimen may include quartz, feldspar, and black manganese-oxide minerals in the matrix) — mineral

Rhodonite

Rhodonite, manganese inosilicate — MnSiO₃; the specimen may include quartz, feldspar, and black manganese-oxide minerals in the matrix

Granitic gneiss (weathered, rounded cobble) (Foliated granitoid; primarily quartz, feldspar, and mica (composition commonly approximates granite)) — metamorphic

Granitic gneiss (weathered, rounded cobble)

Foliated granitoid; primarily quartz, feldspar, and mica (composition commonly approximates granite)

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

Slate (Slate; fine-grained metamorphosed shale, commonly composed of quartz, illite/muscovite, and chlorite) — metamorphic

Slate

Slate; fine-grained metamorphosed shale, commonly composed of quartz, illite/muscovite, and chlorite

Grey River Stone (Gneiss/Schist mix) (Foliated Metamorphic Rock (variable mineral formula)) — metamorphic

Grey River Stone (Gneiss/Schist mix)

Foliated Metamorphic Rock (variable mineral formula)

Quartz with Actinolite or Tourmaline inclusions (Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2 or Tourmaline group inclusions) — igneous

Quartz with Actinolite or Tourmaline inclusions

Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2 or Tourmaline group inclusions

Green Aventurine (Quartz (SiO2) with fuchsite inclusions) — mineral

Green Aventurine

Quartz (SiO2) with fuchsite inclusions

Banded gneiss (Gneiss, commonly quartz–feldspar–biotite gneiss) — metamorphic

Banded gneiss

Gneiss, commonly quartz–feldspar–biotite gneiss

Likely garnet-bearing schist or gneiss (Mica schist/gneiss containing quartz, feldspar, mica, and possible almandine garnet) — metamorphic

Likely garnet-bearing schist or gneiss

Mica schist/gneiss containing quartz, feldspar, mica, and possible almandine garnet

Dark gneiss or migmatitic amphibolite (Band ed gneiss; composition likely quartz–feldspar–biotite/amphibole, possibly migmatite) — metamorphic

Dark gneiss or migmatitic amphibolite

Band ed gneiss; composition likely quartz–feldspar–biotite/amphibole, possibly migmatite

Polished banded metamorphic stone, likely gneiss or quartzite (Banded quartz–feldspar–mica rock; precise identification requires testing) — metamorphic

Polished banded metamorphic stone, likely gneiss or quartzite

Banded quartz–feldspar–mica rock; precise identification requires testing

Likely amphibolite (Amphibolite, composed mainly of hornblende and plagioclase feldspar) — metamorphic

Likely amphibolite

Amphibolite, composed mainly of hornblende and plagioclase feldspar

Green Aventurine (Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Rhodonite (Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)) — mineral

Rhodonite

Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)

Rhodonite (Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3

Likely biotite-rich schist or gneiss (Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica) — metamorphic

Likely biotite-rich schist or gneiss

Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica

Banded gneiss pebble (Gneiss, likely quartz–feldspar–mica gneiss) — metamorphic

Banded gneiss pebble

Gneiss, likely quartz–feldspar–mica gneiss

Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

Garnet in Matrix (likely Almandine in Quartz/Mica Schist) (Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock) — metamorphic

Garnet in Matrix (likely Almandine in Quartz/Mica Schist)

Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock

Biotite Schist (Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)) — metamorphic

Biotite Schist

Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)

Greenstone / Greenschist (Chlorite schist / Epidiorite) — metamorphic

Greenstone / Greenschist

Chlorite schist / Epidiorite

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Tumbled rhodonite (Rhodonite, manganese inosilicate (MnSiO₃)) — mineral

Tumbled rhodonite

Rhodonite, manganese inosilicate (MnSiO₃)

Green Aventurine (Tectosilicate, variety of Quartz (SiO2) containing Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

Tectosilicate, variety of Quartz (SiO2) containing Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Black Tourmaline (Schorl) (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline (Schorl)

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Unidentified small mineral fragments (Likely quartz- or feldspar-rich material; species cannot be determined reliably from the image) — mineral

Unidentified small mineral fragments

Likely quartz- or feldspar-rich material; species cannot be determined reliably from the image

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Green Aventurine (Quartz with fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Quartz with fuchsite inclusions (SiO2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Rhodolite Garnet (Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)) — mineral

Rhodolite Garnet

Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)