* Malartic to produce 7.7 mln ounces of gold over 12 years
* Says open-pit reserve at site is 8.97 mln ounces of gold
TORONTO Feb 10 Osisko Mining (OSK.TO) expects its Malartic gold project in Quebec to produce 7.7 million ounces of gold over a 12-year period, the Canadian exploration company said on Wednesday.
The Montreal, Quebec-based company said its open-pit reserve at the site is 8.97 million ounces of gold, at an average grade of 1.13 grams per tonne.
The company expects that over a 12.2-year mine life, the average annual output from the mine will be 630,000 ounces of gold and 800,000 ounces of silver. (Reporting by Euan Rocha, editing by Maureen Bavdek)