(Updates prices, changes dateline to London)

By Polina Devitt

LONDON, Jan 23 (Reuters) - Copper prices rose on Friday,

getting support from a weaker dollar, growth in other metals and

setting aside for now signs of rising stock availability for

nearby supply.

The benchmark ‌three-month copper on the London Metal

Exchange gained 1.2% to $12,901.50 a metric ton by 1043

GMT ​after finding support at its 21-day moving average at the

market ‍close on Thursday. The metal hit a record ⁠high of $13,407

on January ⁠14.

The U.S. dollar headed for its steepest weekly drop since

June as geopolitical tensions and ‌abrupt policy shifts around

Greenland unsettled investors. ​A weaker dollar makes the

dollar-priced metals more attractive for buyers using other

currencies.

Providing some support from the supply ⁠side, Capstone Copper ( CSCCF )

said that a ‍workers' strike ​had forced a production halt

at its Mantoverde mine in Chile.

Copper miner Freeport-McMoRan ( FCX ) said that it expected

about 85% of production at ‍its giant Grasberg mine to be back

online by the second half of this year.

On the demand side, record December copper production in top

metals consumer China and high prices saw the Yangshan copper

premium , a gauge of Chinese appetite for copper

imports, stabilising at $22 ​a ton, ‍its lowest since mid-2024.

The premium of the Comex copper contracts against the LME

ones has narrowed down sharply this week,

prompting ​deliveries to the LME-registered warehouses in the

U.S. , while copper inventories in warehouses

monitored by the Shanghai Futures Exchange rose 6%.

Indicating rising availability of the metal for nearby

supply, the spread between the LME cash copper contract and the

benchmark swung to a discount of $83 a ton, its widest

since September, from ​a premium of $102 on Tuesday.

In other LME metals, aluminium rose 0.1% to

$3,135.50, zinc climbed 0.3% to $3,221, lead

gained 0.2% to $2,023.50, tin jumped 3.3% to $53,400,

while nickel was up 3.1% ‍at $18,545.