Foliated slate or phyllite
Fine-grained metamorphosed mudstone; typically quartz, mica, chlorite, and clay-derived minerals
metamorphic
Category
Sedimentary Or Metamorphic (Low Grade)
Browse sedimentary or metamorphic (low grade) specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Metamorphic (Low Grade) in the encyclopedia
View all →
Slate
Slate (Low-grade regional metamorphic rock)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Slate with Pyrite Inclusions
Foliated Metamorphic Rock (with Iron Sulfide FE-S2)
metamorphic
Riverstone (likely Gray Slate or Siltstone)
Metamorphosed fine-grained sedimentary rock (Argillite/Slate)
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Banded Slate Pebble
Metamorphosed Mudstone / Slate
metamorphic
Slate
Low-grade Metamorphic Rock (composed of quartz, illite, chlorite)
metamorphic
Slate
Slate (foliated metamorphic rock)
metamorphic
Slate
Foliated metamorphic rock
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Schist (containing Muscovite Mica and Chlorite)
Mica Schist
metamorphic
Green Slate (Greenstone)
Foliated Metamorphic Rock (rich in Chlorite/Epidote)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Slate (Metamorphic Rock)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Slate (foliated metamorphic rock)
metamorphic
Greenschist
Greenschist (composed mainly of chlorite, epidote, actinolite, and albite)
metamorphic
Greenschist
Greenschist (composed mainly of actinolite/tremolite, chlorite, and epidote)
metamorphic
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
metamorphic
Greenstone / Greenschist
Greenschist (composed of chlorite, epidote, and actinolite)
metamorphic
Slate
Metamorphic Pelitic Rock
metamorphic
Spessartine Garnet in Quartz/Feldspar Pegmatite
Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar
Mineral in Igneous Rock
Banded gneiss pebble
Gneiss, typically quartz–feldspar–mica assemblage
metamorphic
Greenschist
Chlorite schist
metamorphic
Biotite Schist
Metamorphic Rock (Schist)
metamorphic
Slate
Foliated metamorphic rock (Slate)
metamorphic
Pyrite in Slate
Iron Disulfide (FeS2) in Low-grade Metamorphic Rock
metamorphic
Slate
Slate (Low-grade metamorphism of shale/mudstone)
metamorphic
Greenschist
Chlorite schist
metamorphic
Seraphinite (Clinochlore)
Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8
mineral
Slate
Slate (Low-grade foliated metamorphic rock)
metamorphic
Epidote (Unakite component) / Green Quartzite
Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Grey Slate
Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)
metamorphic
Slate
Slate
metamorphic
Greenstone (Greenschist)
Greenschist facies rock (containing chlorite, actinolite, and epidote)
metamorphic
Slate
Phyllo-silicate based metamorphic rock
metamorphic
Greenstone
Greenschist / Meta-basalt
metamorphic
Greenschist (or Serpentinite with Manganese Dendrites)
Greenschist facies metamorphic rock
metamorphic
Greenstone (Greywacke or Nephrite Jade variant)
Metamorphosed mafic igneous or sedimentary rock (e.g., Actinolite-Chlorite Schist)
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral