The news feeds on this site are independently provided by Adfero Limited © and do not represent the views or opinions of the World Gold Council.

Monday, 22nd January 2007 (3235 views)

Canadian-based Greystar Resources has applied to improve the bio-oxidation process at its Angostura gold-silver mining operation.

The company has received approval to introduce the changes at the site following extensive tests that showed an increase in gold recovery rates of around 90 per cent and could ensure the long-term future of the mine, located close to the city of Bucaramanga.

Greystar's executive vice president, Frederick Felder, said: "Overall, the metallurgical results received to date confirm that high recoveries of gold for sulphides can be attained at Angostura, given sufficient grade to justify such processes which may enhance any potential project economics."

He added: "We view these results positively as they provide the alternative of producing an on-site doré product from concentrates and possibly for some of the intermediate grade sulphides as an option for enhanced recovery."

Estimates released at the end of last year, predict that the Angostura mine has deposits of 7.42 million ounces of gold in 173.4 million tonnes of material grading 1.33 grams gold per tonne and further resources of 4.2 million ounces of gold in 80.9 million tonnes with a grading of 1.62 grams gold per tonne.

 

« Back to Gold News stories