Slate
Metamorphic Pelitic Rock
metamorphic
Category
Metamorphic (Low Grade)
Browse metamorphic (low grade) specimens identified by the Rock Identifier community.
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Limonite
FeO(OH)•nH2O
mineral
Slate
Foliated low-grade metamorphic rock
metamorphic
Green Slate Pebble (Serpentine / Greenschist Pebble)
Greenschist / Low-grade Metamorphic Rock
metamorphic
Greenschist
Greenschist (composed mainly of actinolite/tremolite, chlorite, and epidote)
metamorphic
Garnet
Garnet group: X3Y2(SiO4)3 (commonly Almandine-Pyrope series)
mineral
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
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
Chlorite schist
metamorphic
Greenschist
Chlorite schist
metamorphic
Slate
Slate (Low-grade foliated metamorphic rock)
metamorphic
Likely green-schist specimen
Greenschist, a chlorite–epidote–actinolite-bearing metamorphic rock
metamorphic
Greenstone / Greenschist
Greenschist (composed of chlorite, epidote, and actinolite)
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Slate
Slate
metamorphic
Serpentine
Serpentine group (Mg,Fe)3Si2O5(OH)4
metamorphic
Soapstone Carving (Pipestone/Catlinite possible)
Steatite or Argillite
metamorphic
Seraphinite (Clinochlore)
Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8
mineral
Slate
Metamorphic Rock (Fine-grained)
metamorphic
Slate
Slate (foliated metamorphic rock)
metamorphic
Greenstone / Greenschist
Greenschist facies metamorphic rock
metamorphic
Slate
Phyllo-silicate based metamorphic rock
metamorphic
Citrine
Silicon Dioxide (Quartz variety)
gemstone
Greenstone (Greenschist)
Greenschist facies rock (containing chlorite, actinolite, and epidote)
metamorphic
Slate
Metamorphic Mudstone / Shale
metamorphic
Schist
Metamorphic Schist
metamorphic
Greenstone
Greenschist / Meta-basalt
metamorphic
Greenschist
Greenschist (Chlorite-Albite-Epidote Schist)
metamorphic
Greenschist / Serpentinite
Metamorphic rock rich in chlorite/actinolite/serpentine
metamorphic
Greenstone
Metabasalt
metamorphic
Greenstone
Greenschist (composed of actinolite, chlorite, and epidote)
metamorphic
Greenschist (or Serpentinite with Manganese Dendrites)
Greenschist facies metamorphic rock
metamorphic
Quartz and Limestone Grouping
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)
mineral
Greenschist
Greenschist metamorphic rock
metamorphic
Slate
Metamorphic pelitic rock
metamorphic
Slate
Metamorphic pelitic rock
metamorphic
Slate
Metamorphic Pelitic Rock
metamorphic
Greenschist (or Serpentinite) with Quartz-Feldspar Vein
Metabasalt / Greenschist Facies Rock
metamorphic
Greenschist
Chlorite schist
metamorphic
Polished Red Quartz (or Carnelian / Red Jasper)
Silicon Dioxide (SiO2)
mineral
Greenschist
Greenschist
metamorphic