BET YOUR ASSAY - Mining Terms Explained Message Board

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Gold/Mining/Energy : BET YOUR ASSAY - Mining Terms Explained

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To: Walt who wrote (254)	11/10/1997 7:37:00 PM
From: Junaidi	Read Replies (1) of 463

Walt, It is important to have the weights of the two size fractions. Then you calculate the weighted average of the assays of the +150# and the -150# to get the best estimate of the gold content of the sample. Usually the lab will fire assay the entire +150# fraction thereby capturing all the coarse gold. In these southern parts we call them screened fire assays but I believe you call them total gold. They are more expensive because of more intense sample preparation and two gold determinations per sample. Cheers, Junaidi.

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