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

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

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

Greenschist (Greenstone)

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

Greenschist (Greenschist facies metamorphic rock) — metamorphic

Greenschist

Greenschist facies metamorphic rock

Slate (Slate (Metamorphic Rock)) — metamorphic

Slate

Slate (Metamorphic Rock)

Whetstone (Novaculite / Microcrystalline Quartz) — metamorphic

Whetstone

Novaculite / Microcrystalline Quartz

Greenstone (Metabasalt / Chlorite-actinolite schist) — metamorphic

Greenstone

Metabasalt / Chlorite-actinolite schist

Greenstone (Metabasalt) — metamorphic

Greenstone

Metabasalt

Greenstone / Serpentinite Pebble (Serpentinite / Greenschist facies rock) — metamorphic

Greenstone / Serpentinite Pebble

Serpentinite / Greenschist facies 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)

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

Epidote

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

Jadeite Jade (Jadeite (NaAlSi2O6)) — metamorphic

Jadeite Jade

Jadeite (NaAlSi2O6)

Gray Slate River Stone (Slate) — metamorphic

Gray Slate River Stone

Slate

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

Anthracite Coal (Low-grade metamorphic carbonaceous rock) — metamorphic

Anthracite Coal

Low-grade metamorphic carbonaceous rock

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)

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

Greenschist (Chlorite-actinolite schist) — metamorphic

Greenschist

Chlorite-actinolite schist

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

Actinolite

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

Slate (Slate (Metamorphic silicate rock)) — metamorphic

Slate

Slate (Metamorphic silicate rock)

Slate (Slate (Foliated metamorphic rock)) — metamorphic

Slate

Slate (Foliated metamorphic rock)

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

Greenschist

Greenschist (Chlorite-actinolite schist)

Jadeite (NaAlSi2O6) — mineral

Jadeite

NaAlSi2O6

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

Greenschist

Greenschist (containing Chlorite, Actinolite, and Epidote)

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)

Limonite (FeO(OH)•nH2O) — mineral

Limonite

FeO(OH)•nH2O

Slate (Metamorphic Pelite) — metamorphic

Slate

Metamorphic Pelite

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Jadeite (NaAlSi2O6) — gemstone

Jadeite

NaAlSi2O6

Jadeite Jade (NaAlSi2O6 (Sodium Aluminum Silicate)) — gemstone

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)