Malisa EP. Petrography and mineral chemistry of the pelitic and semi-pelitic gneisses of the merelani tanzanite mining area, northeastern Tanzania. Tanz. J. Sci. [Internet]. 2021 Apr. 18 [cited 2024 May 5];31(2):81-92. Available from: https://tjs.udsm.ac.tz/index.php/tjs/article/view/440