China last week broadened its export restrictions on REEs by including five additional elements.
BHP is exploring the possibility of developing mines in Arizona's Globe-Miami area.
The company expects gold production to be highest in Q4 this year.
The agreement allows OceanaGold to acquire up to a 75% interest in Headwater's TJ, Jake Creek and Hot Creek projects.
Chengtun Gold Ontario will buy all the outstanding shares of Loncor for C$1.38 ($0.98) per share.
