Trial mining and metallurgical test work by Sur American Gold (SUR-V) indicates that the high-grade Tarale and Batoto zones, on the Comval project on the island of Mindanao in the Philippines, are amenable to conventional, low-cost carbon-in-pulp processing methods.
Test work on an initial 200-tonne composite sample grading 11.8 grams gold per tonne yielded recoveries of between 90%-95% (averaging 91.8%) via standard carbon-in pulp methods. The results also indicate low reagent consumption rates.
The sample was derived from seven high- and low-grade veins structures and stockwork zones. About 100 oz. of the refined gold (99.9% pure) will be sent to Canada for further testing.
Sur American has applied to the Philippines Mines and Geosciences Bureau for permission to expand the bulk metallurgical test program. The company has already taken delivery of a 30-tonne truck and new rock breaking equipment, compressors and generators, in anticipation of MGB approval.
The company plans to launch a feasibility study at Comval next year; pending positive results, plans call for a further expansion of the plant. Feed will initially come from the high-grade veins with supplemental feed from the wider and much larger lower grade stockwork zones of Batoto and Tarale.
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