Metamorphic (Likely Gneiss Or Schist Based On Texture)

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Quartzite

Quartzite (primarily SiO2)

Mica (Muscovite)

Muscovite (KAl2(AlSi3O10)(OH)2)

Muscovite Mica

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

Muscovite Mica

Muscovite: KAl2(AlSi3O10)(OH)2

Gneiss

Gneiss

Mica Schist with Iron Staining

Muscovite/Biotite Schist

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Gneiss (Metamorphic Rock)

Gneiss

Gneiss (Stream-worn Cobble)

Gneiss (Metamorphic rock composed primarily of Quartz, Feldspar, and Mica)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Gneiss

Gneiss (a metamorphic rock)

Gneiss

Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)

Gneiss

Gneiss

Micaceous Schist

Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)

Schist

Mica Schist (primarily Muscovite and Quartz)

Fuchsite (Green Muscovite in Quartz)

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Gneiss

Gneiss

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

Mica Schist

Mica Schist (Complex Silicate Rock)

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Gneiss

Metamorphic rock of high-grade regional metamorphism

Gneiss

Foliated Metamorphic Rock (Gneiss)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Epidote

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

Gneiss

Gneiss

Schist

Mica Schist (Variable chemistry, often rich in muscovite and biotite)

Ruby in Kyanite

Corundum (Al2O3) in Kyanite (Al2SiO5)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz with Mica inclusions (likely Schist or Gneiss host)

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

Gneiss

Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica/Amphibole)

Biotite (Black Mica)

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

Garnet (likely Almandine, Pyrope, or a blend)

Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)

Graphite

Graphite (Carbon, C)

Muscovite Mica (on Quartz Matrix)

Muscovite - KAl2(AlSi3O10)(OH)2