Metamorphic Rock

Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Banded Gneiss (River Cobble)

Gneiss (High-grade regional metamorphic rock)

Anthracite Coal

Anthracite (Carbon-based sedimentary-metamorphic rock)

Granite Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Schist

Mica Schist (Medium-grade metamorphic rock)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss (specifically Pink Gneiss)

Gneiss (high-grade regional metamorphic rock)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz (pebble)

Quartz (SiO₂)

Gneiss (Metamorphic Cobble)

Gneiss (High-grade Regional Metamorphic Rock)

Banded Gneiss

Gneiss (quartz-feldspar-biotite metamorphic rock)

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Quartzite (River Pebble)

Metamorphic rock consisting primarily of Quartz (SiO2)

Mica Schist

Foliated Metamorphic Rock (rich in Muscovite or Biotite)

Marble (Carrara style)

Recrystallized Calcite-rich Metamorphic Rock (CaCO3)

Gneiss

High-grade regional metamorphic rock (Foliated)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Lapis Lazuli

Lazurite-rich metamorphic rock (complex silicate)

Anthracite Coal

Anthracite (Carbon-rich Sedimentary-to-Metamorphic Rock)

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss (specifically a Banded Gneiss pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss (specifically Micaceous Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Slate

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Slate with Quartz Vein

Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)

Lapis Lazuli

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

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

Anthracite Coal

Anthracite (Carbon-based organic sedimentary/metamorphic rock)

Shungite

Non-crystalline carbon (high-carbon metamorphic rock)

Coal (Anthracite)

Anthracite (Carbon-based organic sedimentary/metamorphic rock)

Slate

Metamorphosed Shale (Fine-grained Foliated Metamorphic Rock)

Greenschist (Chlorite Schist)

Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)