I found a Potash Deposit, page-3

Or if it's too hard to do any work or spend money, you can vend the info to a public company for some shares and let them deal with it. A running exploration company in WA can send a geo out for a gander and decide if they are interested at the asking price bound by a non disclosure, no action agreement.
Drop me a line if you want to go that route. [email protected] and I can talk to a WA company who might want to have a look.. Obviously the more you spend on it and proving you do prior to sale... the more it is worth.