Environmental Impact of Mining Exploitation: A Case …
2016-10-13 · mining works are doing by trenches (Figure 1 and Table 1). 7) The Njakh mining area The last studied mining area is the Njakh mine (GPS coordinates: 31.41˚N, 3.91˚W). 30 km at the east of Erfoud city, the mineralization is mainly barite with small amounts of fluorite. Like all deposit cited above, barite (fluorite) mineralization is mainly as ...