The coefficient of friction of Leathered Brazil Gold Slate tiles can vary depending on a few factors, such as the specific finish applied to the tiles and the texture of the surface. However, in general, leathered slate tiles have a relatively high coefficient of friction, making them more slip-resistant compared to polished or honed finishes. The coefficient of friction for leathered Brazil Gold Slate tiles may typically range from 0.6 to 0.8 or higher. It is always recommended to consult with the specific tile manufacturer or supplier for the most accurate and up-to-date information regarding the coefficient of friction for a particular slate tile product.