Mineral In Metamorphic Rock

Smoky Quartz (with possible Feldspar inclusions)

Silicon Dioxide (SiO2)

Quartz (Milky or Clear Quartz fragment)

Silicon Dioxide (SiO2)

Phyllite

Phyllite (Foliated metamorphic rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with Iron Oxide impurities

Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)

Quartz (SiO₂)

Slate

Foliated Metamorphic Rock (primarily composed of Muscovite, Chlorite, and Quartz)

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Charoite

Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)

Clear Quartz

Silicon Dioxide (SiO2)

Wishing Stone with Quartz Vein

Hydrothermal Quartz Vein in Metasedimentary Matrix (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Greenstone

Metabasalt / Chlorite-Epidote Schist

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with chromium-rich mica or chlorite inclusions)

Quartzite / Sandstone / Chert Mix

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2) / Rock Crystal

Garnet-Bearing Gneiss

Almandine-Garnet Gneiss

Lapis Lazuli (Lazurite crystals on Marble)

Lazurite / (Na,Ca)8[(S,Cl,SO4,OH)2|(AlSiO4)6]

Pink Quartzite

Quartzite (SiO2 with minor iron oxide impurities)

Lapis Lazuli

Lazurite (primary mineral component), (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Granitic Gneiss

Gneiss (Polymetamorphic Granitic Gneiss)

Quartzite (Milky Quartz pebble)

Silicon Dioxide (SiO2)

Serpentine

Serpentinite (group of minerals including Antigorite, Lizardite, or Chrysotile) (Mg, Fe)3Si2O5(OH)4

Pyrite

Iron Sulfide (FeS2)

Orthoclase Feldspar

Orthoclase (KAlSi₃O₈)

Shale

Shale (comprised mostly of clay minerals and quartz)

Smoky Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)

Blue Quartzite

Quartzite (primarily SiO2 with inclusions)

Unakite

Unakitized granodiorite / Quartz-Epidote-Feldspar rock

Quartz

Silicon Dioxide (SiO2)

Red Quartzite (River Pebble)

Quartzite (primarily Silicon Dioxide - SiO2)

Yellow Apatite Sphere (Polished)

Fluorapatite / Ca5(PO4)3F

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Serpentine (Serpentinite)

Antigorite, Lizardite, and Chrysotile: (Mg,Fe)3Si2O5(OH)4

Garnet (Almandine/Pyrope)

Silicate Mineral (Group: X3Y2(SiO4)3 where X=Mg, Fe, Mn and Y=Al, Fe, Cr)

Aventurine

Quartz (Aventurine variety)

River Cobble (Gneiss/Migmatite)

Gneissic Metamorphic Rock (composed mainly of Quartz, Feldspar, and Biotite)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Gneiss (Schistose)

Gneiss

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)