* Benchmark index closes nearly 2 pct higher
* Mining, financial stocks advance firmly
* Energy index rises 3.2 pct on overnight oil price surge (Updates to close)
Dec 27 (Reuters) - Australian shares rose sharply on Thursday, led by resource- based stocks, following an overnight surge in U.S. equities that provided some post-Christmas cheer for investors.
The S&P/ASX 200 index .AXJO climbed 1.9 pct to finished at 5,597.20 when the market reopened after a two-day holiday. The benchmark gained 0.5 percent on Monday.
Wall Street saw a buying frenzy overnight as markets latched on to upbeat U.S data and efforts by the Trump administration to soothe battered equities. MKTS/GLOB
A White House official said on Wednesday that Fed Chairman Jerome Powell's job was not in jeopardy, just days after President Donald Trump described the Federal Reserve as the "only problem" to the U.S. metals and mining index .AXMM gained 1.7 percent to its highest closing level since Nov. 12. Copper prices recovered from their lowest in three months while prices for coal and coking coal rose in China, the biggest importer of Australian minerals. MET/L IRONORE/
Shares of mining giant BHP Group Ltd BHP.AX rose 1.9 percent while those of South32 Ltd S32.AX advanced 3.4 percent.
Energy stocks .AXEJ soared 3.2 percent after a overnight surge saw oil prices post their strongest daily gain in more than two years. However, worries of oversupply and slackening demand continued to put pressure on markets. O/R
Oil & gas explorer Woodside Petroleum Ltd WPL.AX rose 4.2 percent, while peers Santos Ltd STO.AX and Oil Search Ltd OSH.AX advanced 3.1 percent and 2.7 percent, respectively.
Australia's 'Big Four' banks gained between 1.4 percent and 2.5 percent.
The biggest lender, Commonwealth Bank of Australia CBA.AX ,rose 2.5 percent and National Australia Bank Ltd NAB.AX advanced 1.9 percent.
For the day, the financial stocks index .AXFJ was up 1.8 percent. For the year, during which banks were embroiled in a public inquiry after revelations of misconduct, the index is down 17 percent.
Healthcare stocks .AXHJ also clocked significant gains, with index heavyweight CSL Ltd CSL.AX jumping 3.4 percent.
New Zealand's benchmark S&P/NZX 50 index .NZ50 rose 0.689 percent or 60.01 points to finish the session at 8,774.52.
Auckland International Airport Ltd AIA.NZ gained 2.4 percent and a2 Milk ATM.NZ rose 2.6 percent.