The US and the Democratic Republic of the Congo (DRC) are working on a minerals deal, State Department spokeswoman Tammy Bruce said.
"Our DRC partners have pledged to facilitate an efficient, transparent and effective business environment for cooperation in this sector," the spokeswoman told a press conference.
The agreement is expected to boost US investment in the DRC's mining sector, the official noted.
Bruce added that the partnership will include both governments and the private sector.