** ASX-listed Patriot Battery Metals PMT.AX rises 5.2% to A$0.405, highest since January 17
** Hard-rock lithium explorer confirms large pollucite-hosted caesium pegmatite deposit at its Shaakichiuwaanaan Project in Quebec
** Says Rigel and Vega zones confirmed as major caesium discovery, with potential to be significant supply source for global markets, including next wave of terrestrial solar tech
** Caesium plays vital role in significantly improving next generation solar panel efficiency and stability
** Co evaluating options to determine if it can develop caesium as saleable by-product
** PMT falls ~5% this year, as of last close
(Reporting by Shruti Agarwal in Bengaluru)
((Shruti.Agarwal@thomsonreuters.com))