Dolly Varden Silver has announced the results of its 2011 diamond drilling campaign conducted at the Wolf Mine on its Dolly Varden Property, situated 40 km south of Stewart in British Columbia. Overall, the company drilled 4,600 m in 21 diamond drill holes.
Drilling was initiated in 2011 September, but was stopped in view of unfavorable weather conditions in November 2011.
The company has received the analytical results, and check assays were conducted for all drilling. These results comprised an intersection in WS11-110 drill hole from 86.17 to 105.82 m, denoting a core length of 19.65 m grading 388 g/t silver. That interval comprises an intersection from 86.17 to 90.38 m, denoting a core length of 4.21 m grading 1313 g/t silver. The exact widths of these core lengths have not been identified.
The Torbrit and Dolly Varden Mines in the Dolly Varden property produced considerable silver until 1959. Significant mineral resources have been outlined and designed underground at the Wolf and North Star Mines, which are situated in similar sedimentary and volcanic layers to the Eskay Creek deposit that lies 120 km north-northwest of the Dolly Varden property. Both academia and government studies revealed that the Dolly Varden’s geologic setting is an analogue to Eskay Creek. This analogue is rich in silver.
The 2011 drilling program focused to validate and search for extensions along the Wolf mine silver deposit. Drilling particularly targeted the down dip expansions at the Wolf No. 2 deposit, further than the region of significant mineral resource estimates. The layers in the hanging wall of the No. 2 deposit were also targeted for precious metal mineralization comparable to Eskay Creek.
Dolly Varden Silver’s 2011 drilling program at the Wolf Mine has encountered two types of silver mineralization close to each other.
In the Wolf No. 2 Zone, a feeder vein system intersects the stratigraphy. In its core part, it contains brecciated quartz-barite-sulphide- carbonate-rich stockwork vein, which comprises ruby silver, silver, sphalerite, galena, tetrahedrite and probably argentite. At the hanging wall of No. 2 Zone, sulphide debris, mineralized hydrothermal eruption breccias and sulphide replacements in volcanic breccias conform to the volcanic and sedimentary layers. Drilling in the diamond drill holes focused on the area at the No. 3 vein region, but only low-grade silver mineralization was encountered.
Source: http://www.dollyvardensilver.com/