(Corrects bullet point and 2nd paragraph to show Q2 results revised upward, not downward)
* Q3 loss $75.9 mln instead of profit $10.7 mln
* Q2 earnings revised upward to $23.4 mln from $2.9 mln
* Company blames copper hedging program accounting
* Shares up 77 pct in past three months (In U.S. dollars unless noted)
TORONTO, Nov 29 (Reuters) - Mercator Minerals Ltd ML.TO revised its third-quarter results for the second time this month, posting a loss of $75.9 million instead of a profit of $10.7 million.
The Vancouver-based copper, molybdenum and silver miner also revised upward its second-quarter earnings to $23.4 million from $2.9 million.
The revisions have to do with the accounting effects of a copper hedging program instituted as part of a debt refinancing, the company said on Monday.
Mercator said production levels, revenue and costs were not affected by the revisions.
Earlier this month the company lowered its third-quarter profit after an accounting error overstated the revenue for two shiploads of copper concentrate.
Shares of Mercator have risen 77 percent in the past three months, closing at C$3.37 on Friday on the Toronto Stock Exchange. (Reporting by Julie Gordon; editing by John Wallace)