METALS — Copper falls on stronger dollar, Chile supply worries cap downside

(Adds analyst comment, updates prices, changes dateline) By Polina Devitt LONDON, Sept 24 (Reuters) — Copper prices fell on Thursday as a firmer dollar and risk reduction ahead of a long Chinese holiday weekend weighed on sentiment, although worries over supply disruptions at major Chilean mines limited the losses. Benchmark three-month copper on the London Metal Exchange was down 0.4% at $14,565.50 a metric ton by 1001 GMT. Copper, used in power and construction, is up 9% so far this quarter, having hit a record high of $14,875 a ton two weeks ago. Financial markets in top metals consumer China have closed for the Mid-Autumn Festival. Trading will resume on Monday. "China is out, but really it's the macro weight," said Alastair Munro, senior base metals strategist at Marex. The dollar held near a two-month high after a sharp rally, fuelled by expectations of additional Federal Reserve interest rate hikes. FRX/ A stronger US currency makes dollar-priced metals more expensive for buyers using other currencies, while the prospect of higher borrowing costs affects sentiment towards growth-dependent metals such as copper. China equities saw their biggest one-day decline in a month on T