What is a mineral?
For your edification...
Every one of these executive orders that I took the time to look up have been revoked. For example EXECUTIVE ORDER 11001, shows this status: Revoked by: EO 11490, October 28, 1969. Thus I am thinking this information is alarmist and misleading.
Gold confiscation occurred under FDR when gold WAS the money. I don't see how or why that would occur today. If they wanted a gold backed currency, all the government would have to do is open the gold window at whatever price they wanted to back it at and have gold freely exchangeable at that price.