the precipitant is smb----- perhaps i did not explain well----i am not assuming nothing-----what i am saying is : i have an ar solution with gold chloride in it----when i add smb to it,gold precipitates and wth the gold another powder precipitates together-----by my thoughts, only gold should precipitate----- i do not think that it is telurium---the gold comes from plated (fantasy jewllery), or black ic or processors(ceramic)-----the material which i work with,usually is put in nitric to eliminate ag , pd and base metals and then after washings the powder left , it goes thru ar-----the example given is just to try to explain better--- 3grams of smb (i learned in the forum) would precipitate 3grams or 4grams of gold----not 3 grams or 4grams of gold plus 4 or 5grams of other things-----thanks and regards,
Arthur