If the Humnaz Calydon have any Petralith technology, odds are that the kleptomaniac Rabid Togs have stolen parts of them.
Step 1. Kill the Rabid TogA Tog raised by the Humnaz Tribe as an aggressive fighter with a savage bite.s and collect their Petralith Fragments. (You need to collect: Petralith Fragment)
Step 2. Talk with TanitiaStationed at the Disguised Humnaz Outpost, she suspects the Humnaz may be smarter than they look..