SANTIAGO, Nov 13 (Reuters) - Chile´s Candelaria copper mine, owned by Canada's Lundin Mining Corp, said on Friday it had offered an improved contract deal to one of two unions on strike at the deposit in a bid to re-start production.

The mine shut operations on Oct. 20 after members of the Candelaria Union walked off the job, joining the company's Mine Union, which had begun a strike 12 days before.

The latest offer is aimed at the Candelaria Union. The Mine Union rejected a topped-up offer from the firm in early November, prolonging a strike which now stands at 36 days.

"This proposal includes increases in allocations and payments for the closing of negotiations of 17.5 million pesos ," the company said in a statement sent to Reuters.

The mine said the new deal had taken into account both the concerns of the union and the new social economic scenario both locally and internationally.

The union must vote on the proposal by Tuesday, Nov. 17.

Candelaria produced 111,400 tons of copper in 2019. (Reporting by Fabian Cambero, writing by Dave Sherwood; Editing by Cynthia Osterman)