The Sierra Mojada Zinc Project, Coahuila Province, Mexico.


   
Client: Metalline Mining Company, Idaho, USA.
Brief: To produce a bankable feasibility study for a zinc mine and refinery complex in Coahuila province, Mexico.
Budget: Control budget estimate to be produced by the study.
Construction: The deposit consists of two resources, each a different mineral system separated by the east west trending Sierra Mojada fault. North of the fault the mineralisation is chemical sedimentary disseminated to massive silver, copper, zinc and lead sulphide. South of the fault the mineralisation consists of oxide zinc and lead manto deposits.
Technology: Zinc Solvent Extraction and Electrowinning process (SXEW) supplied by Tecnicas Reunidas, Madrid Spain.The Red and White Zinc Manto ore bodies at Sierra Mojada are oxide zinc and SXEW may give Metalline a 30% cost of production advantage over sulphide ore producing competitors.The solvent extraction process consists of leaching the oxide zinc ore with sulphuric acid producing an acidic solution containing zinc and other soluble metals, the leach solution. The leach solution is mixed with the organic extraction solution, which selectively removes and concentrates zinc from the leach solution into the organic extraction solution. The extraction solution is taken to electrolytic reduction cells where SHG zinc (99,995%) is produced.
Power Supply: Negotiations in progress with Comision Federal de Electricidad of Mexico.
Environmental considerations: Area mined for silver for past 60 years - environmental baselining in progress.
Special requirements: Members are learning to speak Spanish!



For more info visit www.metalin.com or contact GTI.