* Benchmark's biggest weekly gain since early Feb
* Nickel players pressure mining index
* Energy stocks buck trend (Updates to close)
By Nikhil Subba
Nov 29 (Reuters) - Australian shares ended a six-session winning streak on Friday, slipping from record highs hit earlier in the session, dragged by mining stocks and as Hong Kong tensions cast fresh uncertainty over a Sino-U.S. trade deal.
The S&P/ASX 200 index .AXJO fell 0.3% to 6,846.00 at the close of trade, having touched an all-time peak of 6,893.70 earlier in the session.
In a thinly traded session, investors assessed China's warning of "firm counter measures" to the United States after President Donald Trump signed legislation into place backing anti-government protesters in Hong Kong. will continue to wait for potential counter measures from China", OCBC analysts said in a note to clients.
Equities around the globe had rallied earlier this week on optimism that the world's two largest economies would seal an agreement to defuse their protracted tariff war.
Reflecting that, the Australian benchmark rose 2.03% this week, its biggest weekly gain since early February. The month of November was the index's best since July.
However, on Friday, mining stocks .AXMM fell 0.6%, hurt by lower prices for iron ore and base metals. Heavyweight Fortescue Metals Group FMG.AX finished almost 1% lower, while nickel miner Western Areas Ltd WSA.AX slumped 4.5%.
Gold stocks .AXGD fell 0.7%, with Ramelius Resources RMS.AX shedding 2.4% and Silver Lake Resources SLR.AX ending the session 1.8% lower.
Prices for safe-haven gold have weakened this month as hopes for a preliminary U.S.-China trade deal buoyed demand for riskier assets. GOL/
Financial stocks .AXFJ fell about 0.5%, dragged by the "Big Four" banks, all of which ended the day lower.
Across the Tasman sea, New Zealand's benchmark S&P/NZX 50 index .NZ50 rose about 1% or 109.3 points to finish the session at 11,316.58.
The benchmark posted a weekly gain of 3.4%, its biggest since early September, and marked its fourth straight week of gains.
Electricity retailer Trustpower TPW.NZ and Fisher & Paykel Healthcare FPH.NZ each closed about 3% higher.