Petrographic and Geochemical Study of Low Grade Metamorphic Rocks around Negash with Reference to Base Metal Mineralization and Groundwater Quality, Tigray, Northern Ethiopia. mejs [Internet]. 2024 Mar. 12 [cited 2024 Sep. 16];1(2):106-32. Available from: https://journal.mu.edu.et/index.php/mejs/article/view/72