(Updates prices to Asian market close)

By Hongmei Li

SINGAPORE, July 8 (Reuters) - Copper prices edged higher

on the London Metal Exchange and the Shanghai Futures Exchange

on Tuesday, though uncertainty over U.S. tariffs and the

potential for increased copper supply from Chile, the world's

largest producer, capped further gains.

Three-month copper on the LME was up 0.3% at $9,860

per metric ton, as of 0703 GMT, and the most-traded copper

contract on the SHFE inched 0.14% higher to 79,620 yuan

($11,102.13) a ton.

The United States sent formal notices to 14 countries on

Monday announcing new tariffs ranging from 25% to 40%, set to

take effect on August 1. Additionally, U.S. President Donald

Trump warned that an extra 10% tariff could be imposed on BRICS

nations, including Brazil, Russia, India, and China, if they

pursue what he described as "anti-American" policies during

their summit in Brazil.

"The market focus is still very much on the U.S. trade

tariffs, as all have not been finalized, and higher copper

export value from Chile probably suggests a higher supply

volume," said a Beijing-based metals analyst from a futures

company.

Chile exported $4.67 billion worth of copper in June,

marking an increase of 17.5% in the year-ago period.

"Chilean copper mines had their best month of export revenue

in over three years in June," ANZ said.

Copper is still flowing to the U.S., as Washington's ongoing

investigation into potential new copper import tariffs keeps the

premium of COMEX copper futures over the LME benchmark elevated,

and the COMEX copper stocks are at a seven-year high, or up 120%

since mid-February.,

LME nickel edged 0.31% lower to $15,130 a ton, while

tin gained 0.57% to $33,475, lead went up 0.56%

to $2,048, aluminium grew 0.54% to $2,587.5, and zinc

up 0.47% to $2,697.

SHFE aluminium gained 0.12% to 20,525 yuan a ton,

while nickel went down 0.67% to 120,370 yuan, zinc

lost 0.61% to 22,050 yuan, lead eased 0.29% to

17,160 yuan, and tin ticked down 0.08% to 265,480 yuan.

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($1 = 7.1716 Chinese yuan)