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Sedimentological Evaluation of Placer Deposits


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Author Prudden JM


Measurable physical characteristics of placer deposits include both fluvial sedimentological features and their related heavy mineral suite. These two important identifiable factors are interrelated and generally compliment each other furnishing a complete geological geochemical tool in cost- effective placer evaluation. Heavy mineral suite composition and character will change downstream from the provenance area and will compliment the related sedimento logical environment. Careful attention to gold particle characterization during the exploration phase will indicate new source additions, enhance deposit evaluation techniques and greatly assist in maximizing metallurgical efficiencies. Recognition of the various characteristics within these fluvial systems should enhance the total contained geochemical suite evaluation considering a finite source. Failure to recognize and measure these two important features very frequently leads to frustrated and unrewarding placer evaluation objectives.