Mkuu Nyabhingi...heshima mbele.
Naona hapo juu taarifa uliyopewa haiko sahihi, sababu kuna taarifa kamili kuhusu suala hili iliyofanywa na
Wakala wa Ukaguzi Madini Tanzania. Nimetoa tu dodoso kutoka kwenye taarifa hiyo, lakini unaweza kuisoma taarifa kamili kwenye tovuti ya Wakala kupitia
http://www.tmaa.go.tz/images/upload...a_Copper_Concentrate_Smelter_in_Tanzania1.pdf
Kuhusu Mgodi wa Buzwagi, taarifa inasema....nanukuu
"Buzwagi Gold Mine
Buzwagi Gold Mine (BZGM) is located in the Kahama District - Shinyanga Region. The mine is 6 km southeast of the town of Kahama. BZGM is wholly owned by Pangea Mineral Ltd, which is a subsidiary of Barrick Gold Corporation. Mineralization at BZGM occurs in shear zones within host rocks. Gold mineralization occurs in association with sulphides (pyrite) and quartz, and as free grains while copper mineralization occurs as primary sulphides (chalcopyrite).
Processing Method
Three mineral processing methods are mainly employed at BGM and BZGM to recover gold from the ore, which are gravity, froth flotation and carbon-in-leach (CIL). Copper Concentrate at BGM and BZGM is recovered through froth flotation process, accounting for approximately 60% of the gold produced. Gravity and CIL recovery accounts for the remaining 40%. The production of gold bars and Copper Concentrate at BGM and BZGM started in April, 2001 and May, 2009 respectively.
Copper Concentrate comprises of the following major products: copper (average assay 15%), gold (average assay 0.02%) and silver (average assay 0.02%), copper being in higher concentration than the rest, hence the product named Copper Concentrate."