Manzoor Ahmad Badar, Safdar Hussain, Shanawer Niaz and Saif Ur Rehman 2017. X-ray Diffraction Study of Aquamarine from Shigar Deposits, Skardu Valley, Northwest Pakistan . International Journal of Economic and Environmental Geology. 8, 4 (Nov. 2017), 33–40. DOI:https://doi.org/10.46660/ijeeg.v8i4.730.