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Foliated
forms from metamorphism, gives a layering look from stress pushing inwards
Non-foliated
no orientation or alignment
Slate
foliated, no visible minerals
protolith: mudstone or shale
Phyllite
foliated, minerals include parts of mica
protolith: slate
Schist
foliated, minerals are present
protolith: phyllite
Gneiss
foliated, minerals are present
protolith: schist
Marble
non-foliated, sugary texture, will react to HCl acid
protolith: limestone
Quartzite
non-foliated, sugary texture from interlocking ____
protolith: sandstone
Serpentinite
non-foliated, scaley green appearance, no visible minerals
protolith: ultramafic rock