Vancouver The results from a batch of silver reassays have boosted the economic propsects of the Monterde silver-gold project in the prolific Sierra Madre belt of northern Mexico.
Newly listed Kimber Resources (KBR-V) selected 145 samples previously assayed by aqua regia digestion to be tested using four-acid digestion. The comparisons showed an average increase of 6%, plus 41 grams per tonne.
The junior also completed 4 bottle roll tests on a composite sample split into four size fractions. Results for gold showed that recovery by cyanidation range from 70%-to-90%. Silver recovery, showed conflicting results ranging of 13% and 58% in the bottle roll tests, and 58-to-97% using cyanide assays. Additional tests will be completed as soon as new samples are available from the current drill program.
The Monterde property hosts a low-sulphidation, epithermal, oxide gold-silver deposit. Based on 21 drill holes, an inferred resource of 6.9 million tonnes grading 2.26 grams gold and 106.6 grams silver havs been tabled.
Last year, Atna Resources (ATN-T) dropped its option to earn a 100% interest in the former underground producer of gold and silver.
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