The coefficient of friction of a specific type of tile, such as Pickled New Zealands Wakatipu Green Schist tiles, would need to be determined through testing. The coefficient of friction measure how slippery or resistant to sliding a surface is when in contact with another material. It depends on various factors including the texture, finish, and materials used in the tile.

To find the coefficient of friction for Wakatipu Green Schist tiles, you would need to consult the technical specifications or contact the manufacturer or supplier of the tiles. They may have conducted tests to determine the coefficient of friction and should be able to provide you with this information.