* Q1 loss $6.2 mln vs loss $11.4 mln, last year
* Q1 rev up 83 pct to $55.8 mln (Follows alerts)
June 15 (Reuters) - Canadian base metals miner Mercator Minerals posted a narrower quarterly loss helped by higher copper production.
For January-March, the company posted net loss of $6.2 million, compared with a net loss of $11.4 million, a year ago.
The company, which owns the Mineral Park mine in Arizona, said revenue rose 83 percent to $55.8 million.
Copper production rose 45 percent to 9 million pounds.
Shares of the Vancouver-based Mercator closed at C$2.75 on Wednesday on the Toronto Stock Exchange. (Reporting by Arnika Thakur in Bangalore; Editing by Saumyadeb Chakrabarty)