Hopkins County Brine Lease

I received a brine lease from Standard Lithium. The sign on bonus is $400 per acre and then $300 per acre or 6.25%, whichever is greater and 25% for any oil or gas. I personally feel like the lease for the brine should be at least 10%. Is this unreasonable?

Would be a good idea to get a good oil and gas attorney to review the lease. Lithium leases are new territory, so the language needs to be reviewed in light of the new TX Supreme Court ruling on produced water.