Rock Identifier

Category

Metamorphic (Low Grade)

Browse metamorphic (low grade) specimens identified by the Rock Identifier community.

Learn about Metamorphic (Low Grade) in the encyclopedia

Greenschist

Slate

Granulite

Chlorite Schist

Chlorite Schist

Greenstone

Gneiss

Schist

Amphibolite

Garnet Schist

Migmatite

Biotite Schist

Khondalite

Greenstone (Metabasalt (composed mainly of chlorite, epidote, and actinolite)) — metamorphic

Greenstone

Metabasalt (composed mainly of chlorite, epidote, and actinolite)

Greenstone (Metabaltic/Greenschist) (Chlorite schist / Meta-basalt) — metamorphic

Greenstone (Metabaltic/Greenschist)

Chlorite schist / Meta-basalt

Jade (Jadeite/Nephrite) (NaAlSi2O6 (Jadeite) / Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite)) — metamorphic

Jade (Jadeite/Nephrite)

NaAlSi2O6 (Jadeite) / Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite)

Slate with Quartz (Low-grade Metamorphic Slate with SiO2 inclusions) — metamorphic

Slate with Quartz

Low-grade Metamorphic Slate with SiO2 inclusions

Slate (Slate) — metamorphic

Slate

Slate

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

Greenschist (Greenstone)

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

Greenschist / Basalt Beach Pebble (Metabasalt / Chlorite Schist) — metamorphic

Greenschist / Basalt Beach Pebble

Metabasalt / Chlorite Schist

Greenstone (Metabasalt / Chlorite-Epidote Schist) — metamorphic

Greenstone

Metabasalt / Chlorite-Epidote Schist

Greenstone (Greenschist / Greenstone (contains epidote, chlorite, and actinolite)) — metamorphic

Greenstone

Greenschist / Greenstone (contains epidote, chlorite, and actinolite)

Slate (Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)) — metamorphic

Slate

Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)

Greenstone with Epidote or Quartz veins (Metabasalt (Greenstone facies)) — metamorphic

Greenstone with Epidote or Quartz veins

Metabasalt (Greenstone facies)

Greenstone (Greenschist / Meta-basalt) — metamorphic

Greenstone

Greenschist / Meta-basalt

Greenschist (Greenschist facies metamorphic rock) — metamorphic

Greenschist

Greenschist facies metamorphic rock

Greenstone with Pyrite inclusions (Greenschist / Meta-volcanic rock with Iron Disulfide (FeS2)) — metamorphic

Greenstone with Pyrite inclusions

Greenschist / Meta-volcanic rock with Iron Disulfide (FeS2)

Gray Slate River Stone (Slate) — metamorphic

Gray Slate River Stone

Slate

Epidote in Quartz ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) mixed with SiO2) — metamorphic

Epidote in Quartz

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) mixed with SiO2

Shale or Slate (Shale (Sedimentary) or Slate (Metamorphic)) — sedimentary or metamorphic

Shale or Slate

Shale (Sedimentary) or Slate (Metamorphic)

sedimentary or metamorphic

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)) — mineral

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Slate (Slate (Metamorphic Rock)) — metamorphic

Slate

Slate (Metamorphic Rock)

Greenschist (Chlorite-actinolite schist) — metamorphic

Greenschist

Chlorite-actinolite schist

Greenstone (Epidiorite / Altered Basalt) — metamorphic

Greenstone

Epidiorite / Altered Basalt

Greenstone (Metabasalt (Greenstone)) — metamorphic

Greenstone

Metabasalt (Greenstone)

Greenschist (Greenschist (Chlorite Schist facies)) — metamorphic

Greenschist

Greenschist (Chlorite Schist facies)

Greenstone (Metabalt) (Chlorite schist / Altered Basalt) — metamorphic

Greenstone (Metabalt)

Chlorite schist / Altered Basalt

Slate (Slate) — metamorphic

Slate

Slate

Slate (Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)) — metamorphic

Slate

Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)

Jadeite Jade (Jadeite (NaAlSi2O6)) — metamorphic

Jadeite Jade

Jadeite (NaAlSi2O6)

Actinolite (Ca2(Mg,Fe)5Si8O22(OH)2) — mineral

Actinolite

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

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

Nephrite Jade / Greenstone (Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]) — metamorphic

Nephrite Jade / Greenstone

Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]

Greenschist / Greenstone (Greenschist (composed of chlorite, epidote, actinolite, albite)) — metamorphic

Greenschist / Greenstone

Greenschist (composed of chlorite, epidote, actinolite, albite)

Slate (Foliated Metamorphic Rock (primarily clay minerals and micas)) — metamorphic

Slate

Foliated Metamorphic Rock (primarily clay minerals and micas)

Slate River Stone (Foliated Metamorphic Rock (composed of illite, chlorite, and quartz)) — metamorphic

Slate River Stone

Foliated Metamorphic Rock (composed of illite, chlorite, and quartz)

Greenstone (Greenschist / Greenstone (containing Chlorite, Epidote, Actinolite)) — metamorphic

Greenstone

Greenschist / Greenstone (containing Chlorite, Epidote, Actinolite)

Greenstone (Greenschist / Meta-basalt) — metamorphic

Greenstone

Greenschist / Meta-basalt

Slate (Slate (Metamorphic silicate rock)) — metamorphic

Slate

Slate (Metamorphic silicate rock)

Slate (Slate (Foliated metamorphic rock)) — metamorphic

Slate

Slate (Foliated metamorphic rock)

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

Greenschist

Greenschist (containing Chlorite, Actinolite, and Epidote)

Greenschist (Greenschist (Chlorite-actinolite schist)) — metamorphic

Greenschist

Greenschist (Chlorite-actinolite schist)

Prehnite (Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Ca2Al(AlSi3O10)(OH)2

Prehnite (Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Ca2Al(AlSi3O10)(OH)2

Fuchsite (Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)