** Shares of Australia's Boab Metals BML.AX slip as much as 8.1% to A$0.455, their biggest intraday fall since October 2
** Base and precious metals explorer receives firm commitments to raise A$50 million ($32.55 million) via placement at an issue price of A$0.40
** Placement price represents 20% discount to co's last close
** Proceeds will be used to advance Sorby Hills Silver-Lead Project in Western Australia
** BML has gained 178.8% so far this year
($1 = 1.5359 Australian dollars)
(Reporting by Keshav Singh Chundawat in Bengaluru)
((Keshav.singhchundawat@thomsonreuters.com))