Rock Identifier

Category

Metamorphic

Browse metamorphic specimens identified by the Rock Identifier community.

Learn about Metamorphic in the encyclopedia

Adinole

Amphibolite

Anthracite

Biotite Schist

Blueschist

Calc-Silicate Rock

Calc-Silicate Rock

Calc-schist

Cataclasite

Chlorite Schist

Chlorite Schist

Cipollino Marble

Cipollino Marble

Cordierite Hornfels

Cordierite Hornfels

Eclogite

Rhodonite (Rhodonite (MnSiO3)) — Mineral

Rhodonite

Rhodonite (MnSiO3)

Muscovite Mica (Muscovite [KAl2(AlSi3O10)(OH)2]) — mineral

Muscovite Mica

Muscovite [KAl2(AlSi3O10)(OH)2]

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

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Kyanite (Kyanite (Al2SiO5)) — mineral

Kyanite

Kyanite (Al2SiO5)

Almandine Garnet (Fe3Al2(SiO4)3) — gemstone

Almandine Garnet

Fe3Al2(SiO4)3

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

Muscovite Mica

KAl2(AlSi3O10)(OH)2

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

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Ruby in Zoisite (Anyolite (composite of Corundum and Zoisite)) — metamorphic

Ruby in Zoisite

Anyolite (composite of Corundum and Zoisite)

Fuchsite (Chrome-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]) — mineral

Fuchsite

Chrome-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]

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

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Garnet (Almandine) (Almandine, Fe3Al2Si3O12) — mineral

Garnet (Almandine)

Almandine, Fe3Al2Si3O12

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

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

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

Nephrite Jade

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

Phyllite (possibly low-grade greenish slate) (Foliated metamorphic rock composed mainly of very fine-grained quartz, mica, and chlorite; approximate composition varies and has no single fixed chemical formula) — metamorphic

Phyllite (possibly low-grade greenish slate)

Foliated metamorphic rock composed mainly of very fine-grained quartz, mica, and chlorite; approximate composition varies and has no single fixed chemical formula

Pale-green schist fragment (Chlorite–sericite schist, possibly containing epidote or actinolite) — metamorphic

Pale-green schist fragment

Chlorite–sericite schist, possibly containing epidote or actinolite

Epidote and Quartz in Basalt (Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt) — metamorphic

Epidote and Quartz in Basalt

Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt

Garnet (Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3) — mineral

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3

Greenish Feldspathic Rock / Epidote Granite (Unakite-type or Epidote-bearing rock) (Epidotized Metamorphic/Igneous Rock) — metamorphic

Greenish Feldspathic Rock / Epidote Granite (Unakite-type or Epidote-bearing rock)

Epidotized Metamorphic/Igneous Rock

Dark metamorphic rock, likely schist or gneiss (Mica schist/gneiss; commonly quartz + feldspar + biotite, with possible amphibole) — metamorphic

Dark metamorphic rock, likely schist or gneiss

Mica schist/gneiss; commonly quartz + feldspar + biotite, with possible amphibole

Foliated metamorphic rock, likely mica schist (Mica schist, mainly quartz–feldspar–mica assemblage) — metamorphic

Foliated metamorphic rock, likely mica schist

Mica schist, mainly quartz–feldspar–mica assemblage

Greenschist (Greenschist (chlorite schist)) — metamorphic

Greenschist

Greenschist (chlorite schist)

Mica Schist (Mica Schist (Silicate rock)) — metamorphic

Mica Schist

Mica Schist (Silicate rock)

Likely slate or fine-grained metamorphic rock (Slate; predominantly microcrystalline quartz, mica, and clay minerals) — metamorphic

Likely slate or fine-grained metamorphic rock

Slate; predominantly microcrystalline quartz, mica, and clay minerals

Dark gray fine-grained stone, likely basalt (Basalt; chiefly plagioclase feldspar and pyroxene, commonly with minor olivine and iron oxides) — igneous

Dark gray fine-grained stone, likely basalt

Basalt; chiefly plagioclase feldspar and pyroxene, commonly with minor olivine and iron oxides

Mica Schist with Quartz (Mica Schist (primarily Muscovite or Biotite with Quartz)) — metamorphic

Mica Schist with Quartz

Mica Schist (primarily Muscovite or Biotite with Quartz)

Greenschist (Greenschist) — metamorphic

Greenschist

Greenschist

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

Greenstone (Metabasalt / Chlorite Schist) — metamorphic

Greenstone

Metabasalt / Chlorite Schist

Greenschist (Greenstone) (Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)) — metamorphic

Greenschist (Greenstone)

Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)

Quartz (Tumbled) (SiO2 (Silicon Dioxide)) — mineral

Quartz (Tumbled)

SiO2 (Silicon Dioxide)

Quartz (Citrine or Iron-Stained) (SiO2) — mineral

Quartz (Citrine or Iron-Stained)

SiO2

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Serpentine (Serpentinite (Mg,Fe,Ni,Al,Zn)3Si2O5(OH)4) — metamorphic

Serpentine

Serpentinite (Mg,Fe,Ni,Al,Zn)3Si2O5(OH)4

Jadeite Jade (NaAlSi2O6) — metamorphic

Jadeite Jade

NaAlSi2O6

Agate (Chalcedony (SiO2)) — Mineral

Agate

Chalcedony (SiO2)

Citrine (Silicon dioxide (SiO2)) — gemstone

Citrine

Silicon dioxide (SiO2)

Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine) (Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)) — mineral

Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine)

Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)

Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Ca5(PO4)3(F,Cl,OH)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Blue Apatite (Apatite Group (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Apatite Group (Ca5(PO4)3(F,Cl,OH))

Quartz fragment (Silicon Dioxide (SiO2)) — mineral

Quartz fragment

Silicon Dioxide (SiO2)

Bismuthinite with Chalcopyrite and Quartz (Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)) — mineral

Bismuthinite with Chalcopyrite and Quartz

Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)