A U.S.-China trade deal is "done," U.S. President Donald Trump said on Wednesday, hours after negotiators from Washington and Beijing agreed on a framework to get a fragile trade truce back on track and remove Chinese export restrictions on rare earth minerals and other critical industrial components.

Trump took to his social media platform to offer some of the first details to emerge from two days of marathon talks held in London that had, in the words of U.S. Commerce Secretary Howard Lutnick, put "meat on the bones" of an agreement reached last month in Geneva to ease bilateral retaliatory tariffs that had reached crushing triple-digit levels.

"Our deal with China is done, subject to final approval with President Xi and me," Trump said on the Truth Social platform. "Full magnets, and any necessary rare earths, will be supplied, up front, by China. Likewise, we will provide to China what was agreed to, including Chinese students using our colleges and universities (which has always been good with me!). We are getting a total of 55% tariffs, China is getting 10%."

A White House official said the 55% represents the sum of a baseline 10% "reciprocal" tariff Trump has imposed on goods imported from nearly all U.S. trading partners; 20% on all Chinese imports because of punitive measures Trump has imposed on China, Mexico and Canada associated with his accusation the three facilitate the flow of the opioid fentanyl into the U.S.; and finally pre-existing 25% levies on imports from China that were put in place during Trump's first term in the White House.

The U.S. president later posted: "President XI and I are going to work closely together to open up China to American Trade. This would be a great WIN for both countries!!!"

Other specifics for how the deal would be implemented remained unclear.

China's commerce ministry did not immediately reply to a request for comment and more information.