Composite samples of drill core from three holes drilled during 2009, namely BW 43, BW 46 and BW 59, were selected for initial testing.
The samples are of selected sections from the three drill holes and represent different rock and alteration types; the samples are of drill core sawed in half lengthwise.
The samples responded well to direct whole ore cyanidation tests with an average of 92% gold recovery across three tests at different conditions on each composite (9 tests in total). Accessory silver was recovered at an average of 47%.
The three composites were also subjected to flotation testing to produce a bulk sulphide concentrate under three different grinding and reagent conditions.
The best recoveries obtained under one set of test conditions returned an average for the three composites of 94% of the gold and silver reporting to the bulk sulphide concentrate.
The composites were also subjected to direct gravity concentration, and again the samples responded well with the three composites averaging 51% gold recovered into a gravity concentrate.
Drillhole BW 46 is on ground owned 100% by Richfield. BW 43 and BW 59 are on ground in which Richfield has earned a 75% interest from Silver Quest Resources.
