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The Rosebush Project lies along the west side of the Cortez gold trend, also known as the Battle Mountain -- Eureka mineral belt, 25 miles southwest of the multi-million ouce Cortez Hills gold deposit being developed by Barrick Gold Corp. Anomalously high levels of antimony, arsenic and mercury are present at Rosebush in strongly-altered and quartz-veined Tertiary volcanic rocks and in Paleozoic rocks beneath the volcanics.
Rosebush lies along a regional north-northwest trending range-front fault zone which is parallel to mineralized structures along the Cortez trend. The vein zone and alteration trend north-northeast and project into a northeast-trending gravity high underlying the adjacent valley to the northeast. The gravity high indicates the potential for shallowly-buried bedrock northeast of the exposed alteration.
Although the exposed alteration lacks significant gold, both sediment-hosted (Carlin type) and volcanic-hosted gold systems in the Great Basin are coincident with enrichments in arsenic, antimony and mercury, commonly peripheral to gold mineralization. Therefore, it is possible that the exposed Rosebush altered area is marginal to a buried gold system underlying the adjacent valley. There is no evidence of previous exploration drilling along the gravity high in the valley, and only several shallow (<500 feet) drill holes may have been completed in the altered area prior to the mid 1990's.
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