Updates throughout with further details and analyst comments
TSX down 0.54%
First Quantum Minerals, Ero Copper fall more than 5%
Kinaxis climbs 7.7% after quarterly revenue beat
Canadian Natural Resources rises 3.3%
By Utkarsh Hathi
March 5 (Reuters) - Canada's main stock index fell on Thursday as retreating gold prices pulled down mining shares, while investors stayed cautious as the Middle East conflict entered its sixth day.
The S&P/TSX Composite Index .GSPTSE was down 0.54% at 33,758.51 points as of 10:05 a.m. ET.
The index had rebounded on Wednesday after a sharp selloff driven by fears that the U.S.-Israel war against Iran would lead to inflation.
"Markets are always shooting first and asking questions later. The algorithms are designed to pick negative headlines and when you get some of those negative headlines, that's what you get," said Allan Small, senior investment advisor at Allan Small Financial Group with iA Private Wealth.
Gold miners .SPTTGD slipped more than 3% as spot gold XAU= declined 0.7%, giving up gains made early in the day. In the broader materials sector .GSPTTMT, base metal miners fell 3% as silver XAG= and copper HGc1 prices also dropped.
Miners First Quantum Minerals FM.TO and Ero Copper ERO.TO slipped more than 5% each.
The heavily weighted financial index .SPTTFS fell 0.2%, while the communication services subindex .GSPTTTS slipped 0.9%.
Energy shares .SPTTEN, however, were 1% higher as crude oil extended gains, with the Middle East conflict disrupting supplies and prompting some major producers to cut output.
Tech stocks .SPTTTK climbed more than 3% led by enterprise software firm Kinaxis KXS.TO, which jumped 7.7% after strong customer expansion helped it beat quarterly revenue estimates.
The healthcare subindex .GSPTTHC also rose 0.6%.
Among other notable movers, oil and gas producer Canadian Natural Resources CNQ.TO climbed 3.3% after fourth-quarter profit beat analysts' expectations.
(Reporting by Utkarsh Tushar Hathi; Editing by Shreya Biswas and Jonathan Ananda)
((utkarshtushar.hathi@thomsonreuters.com; shreya.biswas@thomsonreuters.com;))