No. Mexus claimed Argo backed out due to price of gold. Argo never mentioned a reason.
Gold prices are now significantly up (and anticipated to go much higher). If that was a determing factor, then why is Argo not back trying to work out a deal?
According to PRs JV's are being discussed for other Mexus properties not Santa Elana.
I realize it's hard to keep up with the story constantly changing. Happens to me quite a bit too when it comes to Mexus.