Mineral In Metamorphic Rock

Muscovite Mica

Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2

Gneiss

High-grade metamorphic rock (Gneiss)

Gneiss (Metamorphic Rock)

Gneiss

Milky Quartz with Country Rock contact

Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock

Quartz Vein in Host Rock

Quartz (SiO2) in Mafic or Sedimentary Matrix

Milky Quartz

Silicon Dioxide (SiO2)

Unakite

Epidotized Granite

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Biotite (Black Mica)

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

Biotite Mica

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

Gneiss (specifically Granitic Gneiss)

Gneissic Metamorphic Rock

Fuchsite

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

Serpentinite

Serpentinite (complex silicate minerals including lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)

Epidote

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

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Biotite Schist

Biotite Schist

Gneiss

Gneissic Metamorphic Rock

Schist (Kyanite Schist)

Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)

Lapis Lazuli (Tumbled)

Lazurite-dominated contact metamorphic rock

Lapis Lazuli (Low Grade)

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2)

Quartz Veined Rock (Likely Graywacke or Quartzite)

Silicon Dioxide (SiO2) veins in Metasedimentary matrix

Gneiss

Foliated Metamorphic Rock (Gneiss)

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Gneiss (Metamorphic Rock)

Gneiss

Slickenside

Tectonic Fault Scarp Surface

Muscovite Mica

Muscovite: KAl2(AlSi3O10)(OH)2

Pebble

Clast (specifically a granule or small pebble)

Mica Schist

Schist (Crystalline metamorphic rock)

Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Garnet Schist

Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)

Kyanite

Kyanite (Al2SiO5)

Gneiss

High-grade Metamorphic Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss (Metamorphic silicate rock)

Banded River Rock / Gneiss (highly weathered)

Gneiss

Pyrite (on Quartz/Host Rock)

Iron Sulfide (FeS₂)

Milky Quartz (Quartz Vein)

Silicon Dioxide (SiO2)

Folded Schist / Gneiss (Metamorphic Rock)

Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)

Banded Gneiss with Quartz Vein

Foliated Metamorphic Rock (Gneiss)

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

Milky Quartz

Quartz (Silicon Dioxide, SiO2)