• Australian mining stocks slide as much as 3.6%, logging their lowest level since July 21

• Sub-index sees biggest intraday pct fall since September 11

• AXMM on course for third consecutive session of declines, if current trend holds

• Miners fall on the back of falling copper and iron ore prices [MET/L] [IRONORE/]

• Mining giants BHP Group and Rio Tinto down 3.8% and 4.2%, respectively

• Sub-index up 5.9% YTD

(Reporting by Rudrannsh Mehra in Bengaluru)