** Shares of Astron Corp fall 8% to A$0.69, set for their worst session since June 7
** Stock hits lowest since Aug. 20
** Critical minerals miner plans to raise A$10 mln ($6.68 mln) via an entitlement offer
** Offer issue price at A$0.66 per share is at a 12% discount to stock's last close on Oct. 14, when trading was halted pending the announcement
** Says funds to be utilised for starting commercial production at Donald project in Victoria
** More than 48,000 shares change hands, 3.3 times the 30-day avg
** Stock down 2.1% YTD
($1 = 1.4961 Australian dollars)
(Reporting by Nikita Maria Jino in Bengaluru)
((Nikita.Jino@thomsonreuters.com;))