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Gold/Mining/Energy : A New Age In Gold Refining

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To: Michael J. Wendell who wrote (459)	1/16/1998 9:36:00 PM
From: Bill Jackson	Read Replies (1) of 672

Michael, what you say is true about the costs being high for some special situations. Most of the time you can get to the best precision by careful addition of some known amount of metal into a sample that has been split, so you then assay both splits and see how much of your added metal shows up. So if you assay a sample and get 6 grams per ton, and then you add another 6 grams per ton to some more and you then get 9 grams per ton, you know you are missing 50% due to masking effects, and the real assay should be 12 grams per ton. Keep the additions in the range of what you are assaying. Do not add 1000 grams per ton, or you will bury your result in that high value. This can be done, but it costs. I am ever curious if there is really metal in theose dirts?? Any assay must be fine tuned to what they are assaying as native ores are so variable that it is rarae to find a universal assay for any metal in any ore. Bill

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