There is limited information available specifically on the average hardness of Turkeys Sahra Yellow-White Tuff. Hardness is typically measured using the Mohs scale, which ranges from 1 (softest) to 10 (hardest). However, tuff is an igneous rock composed of volcanic ash and can vary in hardness depending on its specific composition and the amount of consolidation. Tuff is generally considered relatively soft and typically falls within the 2-4 Mohs hardness range. The average hardness for Sahra Yellow-White Tuff would likely be within this range, but without more specific information, an exact average hardness cannot be determined.