Metamorphic Or Sedimentary Depending On Local Grade

Greenschist

Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)

Epidote (likely Pistacite in Epidosite rock)

Epidote: Ca2(Al,Fe)3(SiO4)3(OH)

Epidote

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

Garnet (Almandine)

Almandine, Fe3Al2(SiO4)3

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Epidote

Calcium aluminum iron silicate hydroxide (Ca2(Al,Fe)3(SiO4)3(OH))

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)

Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)

Fuchsite Gneiss or Schist

Muscovite (variety Fuchsite) within Metamorphic Host Rock

Quartz

Silicon Dioxide (SiO2)

Quartzite River Rock

Quartzite (SiO2)

Slate

Foliated Metamorphic Rock

Aquamarine (Pendant) and Jasper (Beads)

Beryllium aluminum silicate (Be3Al2Si6O18) with Chalcedony (SiO2)

Greenstone

Metamorphosed Mafic Igneous Rock

Epidote with quartz/feldspar

Epidote, Ca2(Al,Fe)3(SiO4)3(OH)

Green Slate (Greenstone)

Metamorphic shale (varied composition)

Coal (most likely Bituminous or Anthracite)

Coal (primarily composed of carbon with varying amounts of other elements)

Quartz (Milky/Smoky variety on matrix)

Silicon Dioxide (SiO2)

Aquamarine

Beryl (Be3Al2Si6O18 with Fe2+ impurities)

Garnet

Almandine (Fe3Al2(SiO4)3)

Marble

Metamorphosed Limestone (main mineral: Calcite, CaCO3)

Slate

Foliated Metamorphic Rock

Anthracite Coal

Anthracite (Carbon based fossil fuel)

Petrified Wood

Silicified Wood (primarily SiO2)

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Pyrite

Iron Sulfide (FeS2)

Petrified Wood

Silicified Wood (primarily SiO₂ - Silicon Dioxide)

Corundum (Ruby Variety)

Corundum (Al2O3)

Rhodonite

Rhodonite (MnSiO3)

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Slate with Pyrite Inclusions

Foliated Metamorphic Rock (with Iron Sulfide FE-S2)

Graphite

Graphite (Carbon, C)

Granite Gneiss

Gneiss (high-grade metamorphic rock)

Gneiss

Gneiss

Rough Emerald (Beryl)

Emerald (Be3Al2(SiO3)6 with Cr/V impurities)

Muscovite Schist with Muscovite Mica

Muscovite-rich Schist (KAl2(AlSi3O10)(OH)2)

Unakite

Unakite epidotized granite

Quartzite

Quartzite (primarily SiO₂)

Epidote

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

Slate

Slate (Low-grade regional metamorphic rock)