Nonfoliated Fine grain

You have now identified a fine grained, nonfoliated metamorphic rock. To complete the identification process you must further classify the crystalline structure. Use the Table below to determine whether the rock you are identifying exhibits Slaty Rock Cleavage or phyllitic foliation; directions on how to name the metamorphic rock are in the last column.

Non Foliated Textures	Example	Name	Parent Rock
Glassy texture Black color conchoidal fracture		Anthracite	Bitumunous Coal
Microcrystalline Dark dull color		Hornfel	Any rock
Microcrystalline Dull glossy shades of green smooth cleavage surface		Serpentinite	Basalt, Gabbro, or Ultra maffic rock