Gold Assaying: A Practical Handbook Giving the Modus Operandi for the Accurate Assay of Auriferous Ores and Bullion and the Chemical: A Practical ... and Chlorination (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Gold Assaying: A Practical Handbook Giving the Modus Operandi for the Accurate Assay of Auriferous Ores and Bullion and the Chemical Tests Required in the Processes of Extraction by Amalgamation, Cyanidation and Chlorination

BY assaying is generally meant the scientific determination of one or more elements in a given substance by means of dry reagents and heat, in contradistinction to analysis, which process determines, by chemical wet methods, the proportion of any desired substance contained in a sample; although the deter mination of certain metals by wet methods, notably iron and copper, are characterized as wet assays, as opposed to dry or fire assays. In this little work - which, however, only concerns itself with gold, and incidentally silver - both systems are dealt with. The intrinsic value of a gold-bearing mineral or alloy (bullion) of course depends upon the amount of the noble metal it contains, and a means of its accurate determination is an indispensable essential in the metallurgy Of gold, and in trade dealings in the metal.

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