** Shares of Arafura Rare Earths ARU.AX fall nearly 15% to A$0.1875, snapping 7-session winning streak
** Stock earlier fell as much as almost 20.5% to A$0.175, its lowest level since August 7
** Rare earths miner receives commitments for an almost A$80 million ($51.49 million) placement
** Issue price of A$0.19/shr represents a discount of 17.4% to stock's last close
** About 37.5 mln shares traded so far vs 30-day avg of nearly 9.9 mln
** Stock is up 63% YTD, including session's moves
($1 = 1.5538 Australian dollars)
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))