Metamorphic (Likely Gneiss Or Schist Based On Texture)

Fuchsite

K(Al,Cr)2(AlSi3)O10(OH)2

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Weathered schist or gneiss

Quartz–feldspar–mica metamorphic rock

Red garnet (likely almandine or pyrope)

Garnet-group nesosilicate; commonly almandine, Fe₃Al₂(SiO₄)₃, or pyrope, Mg₃Al₂(SiO₄)₃

Garnet

Garnet-group silicate, likely almandine–spessartine; general formula X₃Y₂(SiO₄)₃

Weathered, iron-stained metamorphic rock (probable schist or gneiss)

Quartz–feldspar–mica metamorphic rock; exact identification requires a fresh surface and thin-section or mineral tests

Schist

Mica schist, typically quartz–muscovite/biotite schist

Mica schist (likely muscovite schist)

Muscovite–quartz–feldspar schist; chiefly muscovite mica, quartz, and feldspar

Likely garnet-bearing schist or gneiss

Mica schist/gneiss containing quartz, feldspar, mica, and probable almandine garnet

Mica schist

Schist (rich in Muscovite or Biotite mica)

Foliated metamorphic rock, likely quartz-mica schist

Quartz–mica schist, commonly containing muscovite/biotite and quartz

Banded gneiss or gneissic schist

Quartz–feldspar–mica gneiss; exact mineral proportions require testing

Coarse-grained metamorphic rock, likely mica schist

Mica schist, probably muscovite–biotite schist with quartz and feldspar

Biotite on Quartz

Biotite Mica (K(Mg,Fe)3AlSi3O10(F,OH)2)

Garnet (likely Almandine or Pyrope)

Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)

Biotite mica schist (probable)

Mica schist, dominated by biotite mica (K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂) with quartz and feldspar

Banded gneiss

Gneiss, typically quartz–feldspar–mica assemblage

Likely pyrite-bearing metamorphic rock

Quartz–mica schist or gneiss with disseminated pyrite (FeS₂)

Schist, likely garnet–mica schist

Mica schist dominated by biotite/muscovite, quartz, feldspar, and possible garnet

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

Likely schist fragment

Mica schist, probably quartz–biotite schist

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Gneiss

High-grade regional metamorphic rock (Foliated)

Biotite mica

Biotite, a potassium–iron–magnesium phyllosilicate mica; approximate formula K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂

Schist

Mica Schist

Likely polished garnet

Garnet group; probably almandine, iron-aluminum silicate (Fe₃Al₂Si₃O₁₂)

Biotite-bearing granite or granitic gneiss

Quartz–feldspar–biotite rock; commonly granite (quartz + K-feldspar/plagioclase + biotite)

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Mica / Muscovite or Biotite

Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

Garnet (almandine or pyrope variety)

Silicate mineral Group: (Fe, Mg, Mn, Ca)3(Al, Fe, Cr)2(SiO4)3

Garnet

Almandine/Pyrope Garnet (Silicate Mineral Group)

Tumbled green-blue stone, likely serpentine or chlorite-rich metamorphic rock

Serpentinite (mainly antigorite/lizardite; identification is image-based)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Garnet (Almandine)

Almandine, Fe3Al2(SiO4)3

Banded gneiss

Gneiss, commonly quartz–feldspar–biotite gneiss

Biotite Mica

K(Mg, Fe)3AlSi3O10(F, OH)2

Mica-rich schist (likely biotite schist)

Biotite–quartz–feldspar schist; mica is chiefly biotite, K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂

Mica Schist

Crystalline Schist (often containing Muscovite, Biotite, and Quartz)

Mica Schist

Metamorphic rock dominated by micas (muscovite, biotite)

Weathered quartz-bearing metamorphic rock, likely mica schist or gneiss

Quartz–feldspar–mica assemblage; exact mineral identification requires testing