Rock Identifier

Category

Metamorphic (Pseudo Igneous)

Browse metamorphic (pseudo igneous) specimens identified by the Rock Identifier community.

Learn about Metamorphic (Pseudo Igneous) in the encyclopedia

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Migmatite

Hornblende Schist

Hornblende Schist

Greenstone (Metabasalt / Metamorphosed Igneous Rock) — metamorphic

Greenstone

Metabasalt / Metamorphosed Igneous Rock

Quartz with Epidote (Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate [Ca2(Al,Fe)3(SiO4)3(OH)]) — metamorphic

Quartz with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate [Ca2(Al,Fe)3(SiO4)3(OH)]

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Banded Gneiss (Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)

Gneiss (High-Grade Metamorphic Rock) (Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)) — metamorphic

Gneiss (High-Grade Metamorphic Rock)

Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

Granitic Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Granitic Gneiss

Gneiss (High-grade Metamorphic Rock)

Schist (Mica Schist (Variable chemistry, often rich in muscovite and biotite)) — metamorphic

Schist

Mica Schist (Variable chemistry, often rich in muscovite and biotite)

Nephrite Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)) — Metamorphic

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (specifically a Banded Gneiss cobble) (Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)) — metamorphic

Gneiss (specifically a Banded Gneiss cobble)

Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Epidosite (Epidosite (consisting primarily of Epidote Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz SiO2)) — metamorphic

Epidosite

Epidosite (consisting primarily of Epidote Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz SiO2)

Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Pegmatite with Black Tourmaline (Granitic Pegmatite with Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)) — igneous

Pegmatite with Black Tourmaline

Granitic Pegmatite with Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

Serpentine (Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4) — metamorphic

Serpentine

Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4

Blue Quartz (Dyed) (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Blue Quartz (Dyed)

Silicon Dioxide (SiO2) with artificial pigment

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Citrine Quartz (Crystalline Quartz (SiO2) with iron impurities) — mineral

Citrine Quartz

Crystalline Quartz (SiO2) with iron impurities

Sunstone (Plagioclase Feldspar (specifically Oligoclase variety with hematite or goethite inclusions)
Chemical Formula: (Ca,Na)(Al,Si)2Si2O8) — Mineral

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety with hematite or goethite inclusions) Chemical Formula: (Ca,Na)(Al,Si)2Si2O8

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Amethyst (Amethyst (Silicon Dioxide - SiO2)) — mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2)

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Blue Apatite (Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]) — mineral

Blue Apatite

Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite treated with acid) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite treated with acid

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Milky Quartz (Quartz Vein) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (Quartz Vein)

Silicon Dioxide (SiO2)

Agate (Silicon Dioxide (SiO2) - Chalcedony variant) — mineral

Agate

Silicon Dioxide (SiO2) - Chalcedony variant

Garnet (Almandine/Pyrope) (Silicate Mineral (Group: X3Y2(SiO4)3 where X=Mg, Fe, Mn and Y=Al, Fe, Cr)) — mineral

Garnet (Almandine/Pyrope)

Silicate Mineral (Group: X3Y2(SiO4)3 where X=Mg, Fe, Mn and Y=Al, Fe, Cr)

Moonstone (Orthoclase Feldspar (KAlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Clear Quartz Crystal (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble (with probable iron staining) (Silicon dioxide (SiO2)) — mineral

Quartz Pebble (with probable iron staining)

Silicon dioxide (SiO2)