TOKYO, March 11 (Reuters) - Japan Organization of Metals

and Energy Security (JOGMEC) said on Wednesday it had sold its

option to take delivery of 40% of future copper concentrate

output from Vicuna's Josemaria project in Argentina to Mitsui &

Co ( MITSF ) for an undisclosed sum.

* Mitsui ( MITSF ) secured the right to future offtake from the

Josemaria copper mine development project, owned by Vicuna, a

joint venture between Canada's Lundin Mining ( LUNMF ) and

Australia's BHP.

* Integrated development with the adjacent Filo del Sol

area, also held by the JV, is under consideration and viewed as

a potential long-term source of copper supply.

* Japan's state-owned JOGMEC conducted joint exploration

activities in the Josemaria region between 2009 and 2017, but

withdrew and sold its 40% stake to its partner while retaining a

40% offtake option.

* JOGMEC solicited companies capable of supplying

concentrate from this region to Japan and the option was sold to

Mitsui ( MITSF ) through a public tender, strengthening Japan's long-term

supply of copper concentrate.

* Vicuna said in February it aims to begin production in

2030, with the first six-year expected to yield an average

715,000 metric tons a year of concentrate from the Josemaria

area.

* The 40% offtake amounts to 286,000 tons of concentrate,

equivalent to about 5.5% of Japan's annual concentrate imports,

JOGMEC said.

* Development of the Josemaria and Filo del Sol projects

will be carried out in three stages. The first stage will be

focused on the Josemaria deposit, with the latter two focused on

Filo del Sol.