I could be wrong, but I would just break it up and run through a dry blower and then process the concentrates. The concentrates are still going to need to be broken down to get all the gold out of the clay, but there will be much less to process.
I mix up my concentrates with water in a bucket thoroughly and run through a mini dream mat sluice after the dry blower. I check the tailings from the dream mat periodically and there is never any gold in it.
I work off the theory that gold stuck in bits of clay is still going to get caught by the dry blower. Mixing up a heap of clay with water is a lot of messy work!