SLATE

=SLATE is my type of ROCK =  Slate is a contact Metamorphic rock.

  Yes it is foliate

Used for housing, roofing,takes thousands of years to change,can be found in any color but mainly gray and black,splits into layers

Colors of slate are gray and black or any other color

is actually shale.    Mostly formed in mountain areas   

 /Users/student/Desktop/slate.jpg

  