Grey River Stone (Quartz-rich Quartzite/Siltstone)
Quartzite / Meta-siltstone (primarily SiO2)
Metamorphic (low-grade)
Category
Metamorphic (Low Grade)
Browse metamorphic (low grade) specimens identified by the Rock Identifier community.
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Greenstone (possibly Basalt or Greenschist)
Greenschist (composed primarily of chlorite, actinolite, and epidote)
Metamorphic (low-grade)
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Sedimentary or Metamorphic (low-grade)
Shale or Argillite
Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)
Sedimentary or Metamorphic (low grade)
Slate
Low-grade Metamorphic Rock
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Greenschist
Chlorite schist
metamorphic
Slate
Foliated Metamorphic Rock (composed of quartz, illite, chlorite)
metamorphic
Green Slate (Greenstone)
Metamorphic shale (varied composition)
metamorphic
Greenschist
Greenschist (containing Chlorite, Actinolite, and Epidote)
metamorphic
Slate
Slate (Low-grade regional metamorphic rock)
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Slate
Slate (foliated metamorphic rock)
metamorphic
Slate
Low-grade Metamorphic Rock (composed of quartz, illite, chlorite)
metamorphic
Slate
Foliated metamorphic rock
metamorphic
Slate with Pyrite Inclusions
Foliated Metamorphic Rock (with Iron Sulfide FE-S2)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Slate (Metamorphic Rock)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Slate (Metamorphic rock)
metamorphic
Slate
Foliated metamorphic rock (Slate)
metamorphic
Slate
Metamorphic Pelitic Rock
metamorphic
Greenschist
Greenschist (composed mainly of actinolite/tremolite, chlorite, and epidote)
metamorphic
Slate with Iron Staining
Low-grade Metamorphic Mudstone (Slate)
metamorphic
Greenschist
Chlorite schist
metamorphic
Greenschist
Chlorite schist
metamorphic
Slate
Slate (Low-grade metamorphism of shale/mudstone)
metamorphic
Spessartine Garnet in Quartz/Feldspar Pegmatite
Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar
Mineral in Igneous Rock
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
metamorphic
Greenstone / Greenschist
Greenschist (composed of chlorite, epidote, and actinolite)
metamorphic
Slate
Slate (Low-grade foliated metamorphic rock)
metamorphic
Garnet
Garnet group: X3Y2(SiO4)3 (commonly Almandine-Pyrope series)
mineral
Slate
Foliated low-grade metamorphic rock
metamorphic
Green Slate Pebble (Serpentine / Greenschist Pebble)
Greenschist / Low-grade Metamorphic Rock
metamorphic
Slate
Slate
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Seraphinite (Clinochlore)
Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8
mineral
Greenstone / Greenschist
Greenschist facies metamorphic rock
metamorphic