No, lets start over.
Coax has it's own built in ground wire, it's called shielding. A coax ground block looks like this;
http://ecx.images-amazon.com/images/I/41w5%2B5iDdjL.jpg
You attach the coax from the antenna to the block, the coax into the house to the other side of the block and a ground wire from the screw on the block to the service ground. You mount this block on the house where it enters the house.
The mast needs a ground wire from the mast to the service ground, no other ground block needed on it. Just run it from the mast to the service ground point. Good connections are all that's required for it.
In addition look here;
http://www.hdtvprimer.com/ANTENNAS/basics.html
scroll down to the section "Grounding Outdoor Antennas"
AND I really can't stress enough that you check out your local code requirements on this.