DRILLING RESUMES AT SONORO'S MONROE PROPERTY.. Feb 25th, 2015 NR
"Sonoro Metals Corp. has resumed drilling at its Monroe property, located in the Sullivan corridor of southeastern British Columbia. Sonoro's geological team has compared data from the current hole with data from several exploration holes drilled in the vicinity of the Monroe property, resulting in a recommendation to extend the drill hole from its current depth of 854 meters to a projected target of 1,200 meters to test the Sullivan Footwall Quartzite interval. British Columbia-based Orofino Drilling Ltd. was selected to complete the hole and drilling has progressed below the location of the original stoppage.
In December 2014, drilling at the Monroe Property was progressing through the first stratigraphic interval within the sub-basin, namely the Sullivan Time interval and was proceeding through a gabbro sill, when progress was temporarily halted as a result of the drill rods becoming stuck. The resulting delay presented an opportunity for Sonoro to conduct petrographic analyses of core from the Monroe and neighbouring drill holes to broaden the understanding of the regional structure.
"Our review of the core indicates that a 3.6 meter wide zone of extremely intense alteration consisting of albite, sericite and thulite was encountered at a depth of 818 meters and is present as a screen of sediment within the gabbro sill," said Monroe technical advisor, Gordon Leask, P.Eng. "Such alteration is extremely rare but was also encountered in the adjacent Fors massive sulphide vent complex located approximately 1 km to the west of the current drill hole and is believed to be related."
The 1,282 hectare Monroe Property is located approximately 20 km south of Cranbrook, British Columbia and 40 km south of the former giant class Sullivan Zinc-Lead-Silver mine. Cominco Ltd. operated the Sullivan mine continuously from 1900 to 2001, yielding 160 million tons of ore grading 6.5% lead, 5.6% zinc and 2 oz/ton silver.
The Monroe Property is situated at the intersection of two major Proterozoic aged crustal structures, specifically the Moyie Fault and the Sullivan Corridor. The property hosts a large volume of Sullivan-type alteration and a gabbro sill-dyke complex fringing a third-order basin, which is developed at the Sullivan Time interval. The depocentre is a 1 km-by-1 km sub-basin which has not been previously evaluated by drilling. The Sullivan deposit is hosted in a similar geologic setting. Past work on the Monroe project dates from the discovery of the adjacent Fors Zinc-Lead-Silver massive sulphide prospect in 1966 by Cominco Ltd. The most recent investigation comprised a major drill campaign in 1997."