** Iron ore pellet producer's shares GRR.AX rise as much
as 5.8% to A$0.635, highest since April 2, 2012
** Company says Q1 pellet output rose to 616kt from 479kt
during Q4 due to a planned shutdown for an installation in Q4
urn:newsml:reuters.com:*:nASXbGD4Bb
** GRR says Q1 avg received prices rose to $228.52/t vs
$174.69/t in Q4
** Stock posts biggest intraday pct gain in more than four
weeks
** Nearly 4.5 mln shares change hands vs 30-day avg volume
of about 2.4 mln
** Stock has more than doubled this year, as of last close
(Reporting by Rashmi Ashok in Bengaluru)
((Rashmi.Ashok@thomsonreuters.com; +918061822604))