Minute crystals of graphite, sericite, chlorite or translucent fine grained white mica found in phyllite imparts a silky sheen to the surfaces of cleavage is called phyllitic luster.
Composition of phyllite
Phyllite is composed of graphite, sericite, chlorite, mica and similar minerals.
Colour of phyllite
The colour of phyllite is typically medium grey or greenish.
The word phyllite is from Greek work Phyllon means leaf so phyllite means leaf-stone.