Riscos de Oro Project
Final Drilling Results for the 2010 Program Calibre announced final drilling assay results from its Riscos de Oro project on August 19, 2010. Riscos de Oro Diamond Drilling Results - August 2010
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Exploration success at Riscos de Oro During the 2009/2010 exploration season, Calibre identified a new and second low sulphidation epithermal vein trend at the Riscos de Oro gold project, northeast Nicaragua. The new vein trend is located near the historic Riscos de Oro mine. Calibre advanced the Riscos de Oro project through sampling and trenching to the current drill testing stage. The Riscos de Oro project is located approximately 20 kilometres northeast of the town of Rosita and is accessible by road. A small past producer, the Riscos de Oro historic gold mine, is located on the La Luna project. New epithermal vein trend outlined near past producing mine Calibre completed a 5.5 line-km reconnaissance soil sampling program that identified a new northeast-trending 700 metre long by 200 metre wide mercury trend northwest of the main vein system at the historic Riscos de Oro underground and open pit gold mine. The new trend is open to the southwest and northeast and is sub-parallel to the main Riscos de Oro vein. The zone contains numerous samples of chalcedonic and banded quartz veins that are coincident with a mercury anomaly high. In addition to the soil anomaly, a potassium thorium radiometric low, a possible geophysical signature representing argillic alterations, denotes the area. Drill program to test vein systems at depth The newly discovered vein zone is interpreted to represent the upper portions of a low-sulphidation epithermal precious metal system at Riscos de Oro, which may possibly preserve veins at depth. A diamond drill program is planned to test this system at depth and is focused on two targets:
The down dip extensions of the Riscos de Oro mine will be drill tested 100 to 150 metres below the abandoned workings and historical drilling. Historic drilling between the 46 metre and 93 metre development levels at the underground mine by a previous operator reported the following intercept*s:
The northeast and southwest extensions of the main Riscos de Oro vein trend will be tested by diamond drilling. The Riscos de Oro vein trend has been defined by previous operators in 18 trenches over a 2 kilometre strike length. The proposed drilling will test the following mineralized trenches on strike of the main Riscos de Oro mine:
*Rosario Resources company records on Riscos de Oro. Circa 1975 to 1977. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
