Amphibolite
Dark colored
Heavy
Weakly foliated
Shiny flakes of black and white
Salt and pepper
Gneiss
Coarse-grained
Compositional banding
Marble
Non-foliated
Reacts with HCl
Phyllite
Platy minerals
Looks like slate with a shinier luster
Quartzite
Non-foliated
Black/dark in color
Tiny mica visible
Schist
Medium-coarse grained
Strongly foliated
Individual mica visible
Slate
Fine grained
Foliated
Slaty cleavage
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