Integrating fuzzy C-means clustering and shannon entropy with hydrogeochemistry for irrigation water suitability mapping in semi-arid hard-rock terrains - Sudipto Halder; Santanu Banerjee; Youssef M. Youssef; Zarkheen Mukhtar; Jayashree Saha; Gupinath Bhandari; Debdas Ray; Faten Nahas; Ehab Gomaa; Khaled A. El-Nagdy; Mahmoud E. Abd-Elmaboud (Environmental Geochemistry and Health, 2026)