Since no one else has replied, being a Metallurgist too, I will: This is an important question. If you have Gold Tellurides, you must use a specialized priority method to treat your ore or concentrates, and if you apply a standard Fire Assay , or other tests to these ore types, you will never get the true assay until you use a special treatment and extraction methods to deal with it, AND Gold Tellurides can assay over 200 Ounces per Ton in Au., but it must be treated by a metallurgical ore specialist, experienced in working with AU Tellurides . I assume you might be getting various conflicting assay reports on this potentially perplexing ore .Gold, atomically, will "alloy" with many other metals,Copper, Silver, Platinum, Rhodium,etc., but, still not "combine" automatically, / Only 1 metal will it "combine" with atomically with Gold, , and that is Tellurium. Then. the Tellurium atom can 'carry' in its atomic matrix, 200 times its AW , Atomic Weight, in Gold atoms, which converts to  ore thats 200 OZ. Per Ton in AU , but you must apply that formula to your gold ore to get a bullion raw bar after 'unlocking' the two by utilization of hydro-metallurgical extraction. I can get a gold bar in 1 step process from Gold Tellurides concentrates , I have worked these ore types , my advice-I suggest, if you are sure you have Gold Tellurides, a potential substantial  ore resource, then seeking specialized consulting here is a good consideration for you; GSRIDDLE/MSHA Interstate Mine Safety Instructor