Hi @rjtmpgar,
I am not trying to be a scaremonger, quite the opposite. Just stating the facts. The link, although not recent, indicates that "71.5% of the tin (1.6% of total mass) reported to the plus 30 micron fraction". That is to say 28.5% is less than 30µm. Still recoverable but not by conventional gravity means.
http://europeanmet.com/assets/EMH_-_Metallurgical_Testing_-_Jan_2015_FINAL.pdf
My comments on size/liberation from mica comes from my experience on these matters. The fact of the matter remains that a leaching process will liberate the tin tungsten from the micas - rendering it recoverable.
Hi @rjtmpgar, I am not trying to be a scaremonger, quite the...
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