YUKON – Vancouver-based Blind Creek Resources
, owner of the Blende zinc-lead-silver project 64 km northeast of Keno Hill, has the results of four months of metallurgical testing of samples from the property. A 175-kg sample of split drill cores that had been stored on site for several years were tested. Despite elevated sulphide oxidation, the material responded well to conventional mineral processing techniques.
[caption id="attachment_1003722858" align="alignright" width="300"] Site of the Blende zinc-lead-silver deposit northeast of Keno Hill. (Image: Blind Creek Resources)
Head grades ranged from 1.5% to 3.5% zinc, 1.5% to 5.4% lead and 17 to 65 g/t silver. The samples were pre-concentrated using dense media separation of particles from 6.3 mm to 25 mm in size. After DMS, grades were approximately double what the heads were.
Differential flotation without fine grinding yielded encouraging results. With a particle size of 80% passing 110 microns, the approximate recoveries were 70% for zinc to concentrate and 85% for lead to concentrate. Most of the silver reported to the lead concentrate with a total silver recovery of 90%.
Blende mineralization outcrops at the surface, making it suitable for open pit mining.
Visit the Blind Creek website, www.BlindCreekResources.com
where the most recent 43-101 report will be posted by the end of May 2018.