Using gold as collateral to get a mortgage

[Nick Strauss]

I've just started looking into buying a duplex. One side for myself and the other for a tenant. I am self employed so it's harder to get a mortgage. I have no other assets except for gold - my money is made through trading currencies so I have no business to put up for collateral. 

What are the odds I could negotiate a mortgage with a lender with terms that might look something like 30% cash down and then offering 25-50% of collateral for the loan amount? My credit is very good - 782.

Just looking for some opinions or things to consider that might make this work. I'm new to this, so maybe this is an absurd idea, but I'm looking for options other than paying for the duplex in full up front.

[Don Konipol]

@Nick Strauss, unfortunately, your ability to live an independent lifestyle and obtain a mortgage you can obviously afford was eliminated by the people who know what's best for everyone - so they enacted the Dodd Frank act and created the CFPB to ensure that only people deemed qualified by themselves can have access to money to purchase a personal residence.  These laws and agency rules do not allow you and I to reach mutually agreeable terms on a home loan.