Metamorphic (Likely Gneiss Or Schist Based On Texture)

Raw garnet-rich metamorphic rock

Likely garnet-bearing schist or garnetite; garnet-group silicates, commonly almandine (Fe₃Al₂Si₃O₁₂)

Foliated metamorphic rock, likely gneiss or schist

Biotite–quartz–feldspar gneiss/schist; exact identification requires a fresh surface and testing

Mica (Muscovite)

Muscovite (KAl2(AlSi3O10)(OH)2)

Weathered foliated metamorphic rock, likely schist or gneiss

Micaceous schist/gneiss; composition likely quartz, feldspar, mica, and altered mafic minerals

Banded metamorphic rock, likely gneiss or foliated amphibolite

Quartz–feldspar–mica gneiss or amphibolite; exact identification requires testing

Quartz-rich mica schist (probable)

Muscovite–quartz schist, possibly with feldspar and biotite

Likely mica-rich metamorphic rock (schist or gneiss)

Biotite–quartz–feldspar schist/gneiss; exact identification is limited by the blurred image

Weathered, iron-stained rock (likely metamorphic)

Indeterminate from photograph; possibly quartz-rich gneiss or schist

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Coarse-grained metamorphic rock, likely gneiss

Biotite–quartz–feldspar gneiss (tentative; exact identification requires testing)

Banded gneiss (likely biotite-bearing)

Gneiss; quartz–feldspar–mica assemblage, with possible iron-oxide staining

Gneiss (Metamorphic Rock)

Gneiss

Garnet

Garnet group species (likely Almandine, Fe3Al2(SiO4)3)

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

Mica Schist

Mica Schist (Complex Silicate Rock)

Muscovite Mica

Muscovite KAl2(AlSi3O10)(OH)2

Pyrite-bearing metamorphic rock (likely schist or gneiss)

Pyrite (FeS₂) in a quartz–mica-rich host rock

Quartz-rich gneiss or quartzite

Quartz–feldspar–mica metamorphic rock; exact identification requires a fresh surface and tests

Weathered mica-rich schist

Muscovite–biotite schist, possibly quartz-bearing

Gneiss pebble

Banded gneiss, commonly quartz–feldspar–biotite gneiss

Banded Gneiss

Gneiss (High-grade metamorphic rock)

Garnet

Garnet Group (e.g., Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3)

Foliated metamorphic rock, likely gneiss or schist

Quartz–feldspar–mica gneiss/schist; exact identification requires petrographic examination

Mica Schist

Mica Schist (primarily Muscovite and Biotite composition)

Garnet (likely Almandine)

Almandine - Fe3Al2(SiO4)3

Weathered schist

Mica schist, likely quartz–biotite/muscovite schist

Mica

Muscovite / Biotite (Phyllosilicate group)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Weathered metamorphic rock, possibly schist or gneiss

Indeterminate; likely quartz–feldspar–mica rock, potentially greenschist or gneiss

Mica-rich rock fragment (likely biotite schist or mica schist)

Mica schist; likely dominated by biotite mica, with possible quartz and feldspar

Gneiss

Foliated quartz–feldspar gneiss, commonly with biotite or amphibole

Quartz-rich rock with chlorite/epidote vein

Milky quartz with green chlorite or epidote; exact identification requires testing

Quartz with Mica inclusions (likely Schist or Gneiss host)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)

Biotite-rich schist (probable mica schist)

Mica schist; predominantly quartz, biotite, and feldspar

Fuchsite (Green Muscovite in Quartz)

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Banded gneiss

Foliated gneiss, likely quartz–feldspar–mica gneiss

Garnet

Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheets with Quartz)

Biotite-rich gneiss or schist

Mica gneiss/schist; primarily quartz, feldspar, biotite, and possibly amphibole

Banded amphibolite (likely hornblende gneiss)

Amphibolite; primarily hornblende amphibole and plagioclase feldspar, commonly with biotite and quartz

Brown Garnet

Andradite or Almandine Garnet (general formula X3Y2(SiO4)3)

Muscovite

Muscovite (KAl2(AlSi3O10)(OH)2)