Mineral Resources of Assam Limestone (APSC Assam
Limestone in Assam. The highgrade fossil limestone or nummulitic limestone deposits of Assam are geologically known as Sylhet limestone as these belong to that groups of rocks. The limestone deposits are confined in areas of Garo hills, united Khasi and Jaintia hills, Cachar hills and Mikir hills. One of the largest outcrops of limestone is at the foot of the Khasi hills.