"Laboratory scale tests by the previous owner showed the
amenability of the main ore deposits to a mild alkaline lixiviate. ...
http://www.wma-minelife.com/uranium/insitu/art137.htm "

My dictionary gives "bleach", but in usage above it means "leachate"=solution
obtained by leaching. Cognates are leak, lye, Lat. lix. Bleach = "be-leach",
with blanch=whiten. Liquid is also cognate.