frontiermetals
Member
- Joined
- Mar 31, 2012
- Messages
- 20
Can anyone shed some light on what metals might show up in a cupel after fire assaying other than gold, silver and the PGMs?
Definitely tungsten as I have had high tungsten samples leave residue in the finished cupel. Was wondering about tantalum and a couple others.kurtak said:Just a guess but one metal I can think of that "might" not respond to cupeling would be tungsten due to its "high" resistance to oxidization & extremely high melting point
There are other metals that take "special" conditions to process as well that "may" (guessing again) to process (separate/refine)
Kurt
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