BEIJING, Sept 13 (Reuters) - Shanghai copper prices rose sharply to a near two-week high in early trade on Thursday after a U.S. official said Washington had invited Beijing to restart talks aimed at resolving their trade dispute. The United States and China have so far imposed tariffs on $50 billion of each other's goods in a spat that has left the market fearing demand for industrial metals will weaken. FUNDAMENTALS * SHFE COPPER: The most-traded November copper contract on the Shanghai Futures Exchange rose as much as 2.1 percent to 48,560 yuan ($7,098.17) a tonne, its highest since Aug. 21, and stood at 48,440 yuan as of 0127 GMT. * LME COPPER: Three-month copper on the London Metal Exchange gained 0.1 percent to $6,004 a tonne, after hitting its highest in more than a week in the previous session, when it closed up 2.4 percent. * TRADE: The Trump administration has invited Chinese officials to restart trade talks, the White House's top economic adviser said on Wednesday, as Washington prepares to escalate the U.S.-China trade war with tariffs on $200 billion worth of Chinese goods. * NICKEL/ZINC: Shanghai nickel and zinc were the other big gainers, rising as much as 3.1 percent and 2.3 percent, respectively, after big jumps in London on Wednesday. * NICKEL: Slower production increases in leading supplier Indonesia and continued growth in stainless steel demand are forecast to extend a supply shortage in the global nickel market, supporting price gains through 2019. * BROKER: Chinese conglomerate Fosun International Ltd is in discussions to buy British-based commodities broker Marex Spectron, two industry sources said. * DRC: Democratic Republic of Congo's mines minister said on Wednesday that a new mining code signed into law in March that hikes royalties and taxes cannot be called into question.