Nearly pure, white and gray banded calcite marble, 40 to 170 meters thick, crops out in three hogback ridges aggregating about 1200 meters in length, located 155 kilometers southeast of Jiddah. The ridges are aligned along a belt over 2.5 kilometers long. The marble is steeply inclined and folded between layers of Precambrian meta-sedimentary rock. The ridges are estimated to contain more than 2 million cubic meters of easily quarried, high-calcium marble. Several hundred thousand cubic meters of uniform, sound marble appears to be suitable for architectural use.
