Greenshist / Chlorite Schist
Chlorite schist (contains (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
metamorphic
Category
Metamorphic (Low Grade)
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Likely slate or fine-grained metamorphic rock
Slate; predominantly microcrystalline quartz, mica, and clay minerals
metamorphic
Weathered foliated metamorphic rock, likely schist or phyllite
Micaceous quartz–feldspar schist/phyllite; exact identification requires microscopy or testing
metamorphic
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Slate
Metamorphic mudstone or shale
metamorphic
Likely slate fragment
Slate; fine-grained foliated metamorphic rock, commonly quartz–mica–chlorite rich
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Greenschist
Chlorite Schist (Greenschist Facies)
metamorphic
Greenstone
Greenschist / Greenstone (Chlorite-Epidote facies)
metamorphic
Slate with Quartz Vein
Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)
metamorphic
Rough Sapphire (possibly Yellow/Green Corundum)
Corundum (Al2O3)
mineral
Slate
Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz
metamorphic
Epidote
Calcium aluminum iron silicate hydroxide (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Greenstone / Serpentinite
Serpentine-group / Altered Mafic Rock
metamorphic
Milky Quartz with Talc / Serpentine
Silicon Dioxide (SiO2) with Mg3Si4O10(OH)2
metamorphic
Greenstone
Chlorite schist or Epidosite
metamorphic
Slate
Foliated Metamorphic Rock (composed mainly of clay minerals or micas)
metamorphic
Jadeite Jade
NaAlSi2O6 (Sodium Aluminum Silicate)
gemstone
Greenstone
Protolith of basalt/gabbro (chlorite-epidote metamorphic facies)
metamorphic
Slate
Foliated Metamorphic Rock (composed mainly of Quartz, Illite, and Chlorite)
metamorphic
Serpentinite (or Green Quartz Pebble)
Mg3Si2O5(OH)4 (Serpentine group) / SiO2 (Quartz mix)
metamorphic
Epidote (likely Pistacite in Epidosite rock)
Epidote: Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Fuchsite (Chrome Mica)
K(Al,Cr)2(AlSi3O10)(OH)2
metamorphic
Prehnite
Calcium aluminum silicate hydroxide - Ca2Al(AlSi3O10)(OH)2
mineral
Fuchsite
Muscovite (chromium-rich), K(Al,Cr)2(AlSi3O10)(OH)2
metamorphic
Greenstone
Metabasalt / Metavolcanic rock
metamorphic
Greenstone
Metabasalt / Chlorite-actinolite-epidote schist
metamorphic
Serpentine (Serpentinite)
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)
metamorphic
Greenschist
Greenschist facies rock (containing chlorite, actinolite, and epidote)
metamorphic
Greenstone
Greenschist
metamorphic
Greenschist
Greenschist (composed mainly of chlorite, epidote, actinolite, and albite)
metamorphic
Tumbled greenstone or serpentine pebble
Serpentinite, chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄); possibly nephrite jade if notably tough and dense
metamorphic
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Quartzite with Chlorite/Epidote
Metamorphosed Quartzite (SiO2)
metamorphic
Foliated metamorphic rock, likely schist
Mica schist or chlorite schist; composition commonly quartz + mica/chlorite ± feldspar
metamorphic
Likely weathered sandstone or metasandstone
Quartz-rich sandstone (possibly weakly metamorphosed metasandstone)
sedimentary
Greenschist
Greenschist (Chlorite Schist)
metamorphic
Jadeite
NaAlSi2O6
mineral
Jadeite Jade
NaAlSi2O6
metamorphic
Greenschist (containing Epidote and Quartz)
Greenschist (Epidote-Chlorite-Actinolite Schist)
metamorphic
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Greenstone or Epidote-rich rock
Epidote or Chlorite schist/greenstone
metamorphic