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Slate
Foliated OR non-foliated: Foliated
Grain size: Very fine-grained
Composition: Variable
Characteristics: Dull, breaks along flat layers, red, black & grey
Type of metamorphism: Regional metamorphism

Gneiss
Foliated OR non-foliated: Foliated
Grain size: Medium-course grained (porphyroblasts may be present)
Composition: White bands: Quartz Na-rich plag
Dark bands: Biotide &/or amphibole
Characteristics: Bands of light & dark minerals
Type of metamorphism: Regional metamorphism

Quartzite
Foliated OR non-foliated: Non-foliated
Grain size: Medium-coarse grained
Composition: Quartz, sandstone protolith
Characteristics: Scratches glass, Non-acidic, pink, low-key dull
Type of metamorphism: Contact metamorphism

Marble
Foliated OR non-foliated: Non-foliated
Grain size: Medium-coarse-grained
Composition: Calcite, limestone protolith
Characteristics: Acidic, Soft, pink & white, crystally look
Type of metamorphism: Contact metamorphism

Schist
Foliated OR non-foliated: Foliated
Grain size: Medium-coarse grained (porphyroblasts may be present)
Composition: Muscovite & biotide, garnet porphyroblasts
Characteristics: Scaly look from larger mica grains (shiny)
Type of metamorphism: Regional metamorphism

Soapstone
Foliated OR non-foliated: Nonfoliated/Foliated
Grain size: Fine-grained
Composition: Mainly talc, chlorite & amphibole
Characteristics: Soft, Waxy, white, green & black
Type of metamorphism: Hydrothermal metamorphism at subduction zones

Phylite
Foliated OR non-foliated: Foliated
Grain size: Fine-grained (porphyroblasts may be present)
Composition: Metallic shine from many mica lined up along flat layers
Characteristics: Shiny (looks metallic), Breaks along flat layers, green
Type of metamorphism: Regional metamorphism