Replies to post #825 on El Capitan Precious Metals Inc (ECPN)

[Pan4Au]

I may have been incorrect about using cyanide in this process but that's what I read on the interwebs. They all say cyanide is used to take gold from crushed ore. I am guessing here but let me comment on this part of the last comment:

"The other separation tracks produce gold, and platinum, and some other platinum group metals such as palladium."

The person said "the other separation process". Then this must be where they use cyanide. That must be this "other separation process". What else could it be? I'm not sure. Everything I have read says cyanide is used to soak out gold from processed (crushed) ore.

[georgeiporgi]

Pan,
!0,000 mesh doesn’t exist

Cyanide leaching is one of the most common methods of gold extraction. ECPN announced test results from a cyanide test work on very finely ground drill hole composite in a Feb 2009 PR. You should look it up, the work was done by experts, very interesting.

Your expert witness says the main separation is done at 5 mm which is actually quite coarse. OK for separation of coarse grained magnetite ore. This and further testimony of you expert witness says that the gold is with the magnetite, the hematite has bugger all and the non-magnetic has silver and PGEs. It seems strange that at one point ecpn was talking about selling magnetite iron concentrates for their iron content only.
Then he says the magnetite has lower PMs and the PMs are in a 10-15% con. This is inconsistent. Also Smith said in his geologic report that he though drilling results indicated PMs were associated with hematite.

The only ore grade signed off by a geologist is Smith’s 0.02 opt.
If the head grade is 0.4 and the con the ship is 10% to 15% of head ore then the cons would be multi ounce. They could afford to remove the dirt with wheel barrows if that was true.

[gitreal]

Pan, I don't even know where to begin with that jumbled explanation of the Aurasource process..

Cyanide, or no cyanide?

1600 degrees, or maybe 6,000 degrees?

And then there's this: The whole process yields on average 0.4 ounces per ton of head ore of precious metals on a gold equivalent basis.

Definition of "head ore" is the ore that is at the head of the process....in other words, before any processing. So, the use of the term head ore is incorrect, they are really describing a concentrate.

Results of a hand-held XRF on gold and platinum beads are meaningless. There is no proof where those beads came from. I don't care if the gold is 24 carat or not, there is no credible evidence that there is anything but trace gold present at the El Capitan property.