Metamorphic Or Sedimentary Depending On Local Grade

Gneiss (specifically Granitic Gneiss)

Gneissic Metamorphic Rock

Kyanite in Quartz

Al2SiO5 in SiO2

Clear Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Mica Schist

Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)

Green Calcite

Calcium Carbonate (CaCO3)

Golden Mica Schist

Mica Schist (primarily Muscovite/Biotite with Quartz)

Quartzite

Quartzite (SiO2)

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

Gneiss (specifically Micaceous Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Slate

Foliated Metamorphic Rock (primarily composed of quartz, illite, and chlorite)

Biotite Gneiss

Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)

Gneiss (Granitic Gneiss)

Gneiss

Gneiss (with Mica and Quartz)

Gneissic Metamorphic Rock

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

Fuchsite Schist

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

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 - Muscovite component)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Gneiss (Granitic Gneiss)

Gneiss

Schist

Schist (metamorphic rock)

Black Kyanite

Kyanite (Al2SiO5) with carbonaceous inclusions

Greenstone (Greywacke or Nephrite Jade variant)

Metamorphosed mafic igneous or sedimentary rock (e.g., Actinolite-Chlorite Schist)

Mica Schist

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

Green Schist

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Kyanite (Green and Blue varieties)

Kyanite (Al2SiO5)

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss

Gneiss (high-grade metamorphic rock)

Kyanite (Blue or Blue-Grey)

Kyanite (Al2SiO5)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss (High-grade metamorphic rock)

Graphite Schist

C (Carbonaceous Schist)

Ferruginous Sandstone (Ironstone)

Arenite with Iron-Oxide Cement (FeO(OH)·nH2O / Fe2O3)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Granitic Gneiss

Gneiss (Metamorphic Rock)