The existing pit where initial sampling returned 43.3 g/t gold over 0.5 meters continues to be expanded and artisanal workers have sunk two more pits nearby, the company reported. An artisanal pit developed 90 meters east of the original pit at Vila Rica returned grades of 8.1 g/t and 16.8 g/t Au from its rock chip samples. Sampling of stockwork-style mineralization in the original pit, 30 meters south of the narrow high-grade intercept of 43.3 g/t Au over 0.5 meters, returned 1.1 g/t Au over 10 meters.
Rock chip samples from a pit developed 250 meters to the south of the above pits returned 6.1 g/t Au. At the southern end of the pit, channels returned an interval of 7.9 g/t Au over 1.9 meters. Mapping suggests this may be a parallel structure, the company stated.
Artisanal workers uncovered gold-bearing vein and stockwork-style mineralization within saprolite (highly weathered bedrock) in the Vila Rica area, while mining placer gold under a cover sequence. Initially, the discovery of bedrock gold at Vila Rica was announced on March 21, 2018 (43.3 g/t Au over 0.5 meters).
"The Vila Rica program has given us our first indication of just how extensive the transported cover sequence is at Cuiú Cuiú, and the potential for this cover to conceal vein and stockwork style gold mineralization. The identification of stockwork style mineralization as well as higher grade mineralization at Vila Rica is a characteristic of the other four deposits with resources thus far identified at Cuiú Cuiú, but perhaps more exciting is the recognition of new targets under post-mineral transported cover identified through reprocessing of the magnetic data. It may well be that the best targets are yet to come as we commence our evaluation of these newly defined trends," said Alan Carter, Cabral's president and CEO.
An auger drilling program has been commenced by Cabral to test for base-of-cover/top-of-saprolite gold anomalism, with past surface soil geochemistry now thought to be ineffective over large areas due to the extent of transported cover, the company noted.
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