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Gold assaying is essential in determining the amount of gold in a mineral deposit. The process involves bringing a rock sample, most often a core obtained through drilling, to a laboratory where it is examined by experts. Assay results are often mapped and used to pinpoint targets for future drill programs.
Assay: An assay is an analysis done to determine: 1  The presence of a substance and the amount of that substance. 2  Thus, an assay may be done for example to determine the level of thyroid hormones in the blood of a person suspected of being hypothyroid (or hyperthyroid).3  The biological or pharmacological potency of a drug.ssay is also used as a verb and has several related meanings in this role: 1  To try or attempt. 2  For example, she assayed this operation for the first time and so was understandably nervous.. 3  To analyze a mixture for one or more of its components. 4  To judge the value, the worth of something.