** Shares of Australia's Prospech PRS.AX rise as much as
20% to A$0.036, their highest since Sept. 5
** Stock posts its biggest intraday percentage gain since
Sept. 5
** Mineral explorer says it has found rare earth elements
(REE) mineralization at its Korsnäs project in Finland
** Says mineralization was identified by reviewing
historical database at Geologic Survey of Finland archive
library
** Nearly 8.3 mln shares change hands, compared with the
30-day average volume of 714,157
** Stock up 11.8% YTD, based on last close
(Reporting by Aaditya Govind Rao in Bengaluru)
((Aaditya.govindrao@thomsonreuters.com;))