Drilling to test a volcanogenic massive sulphide horizon in the upper parts of Bear Glacier in the Stewart and MacKenzie area of British Columbia is starting to yield some eye-popping results for Mountain Boy Minerals (MTB-V).
Assay results for 12 drill holes completed in the junior’s 2008 exploration program on the BA property included highlights such as 309.3 grams silver, 3.95% lead and 6.19% zinc over 9.15 metres.
The VMS horizon on the BA claims lies within the same stratigraphic horizon that hosted the Eskay Creek deposit, which produced more than 100 tonnes of gold and 5,000 tonnes of silver until the mine was closed in 2008.
Geologists at Mountain Boy Minerals believe the zone is a portion of a Kuroko-type VMS system made up of an exhalite horizon with related zinc-lead-silver mineralization.
Assay highlights include 51.73 metres grading 146.13 grams silver per tonne, 1.39% lead and 4.01% zinc in DDH-2008-BA-62, including the 9.15 metres of 309.27 grams silver, 3.95% lead and 6.19% zinc, and 3.05 metres grading 187.5 grams silver, 1.77% lead and 4.24% zinc in DDH-2008-BA-58.
An additional 10 holes drilled during the 2008 field season have yet to be assayed. So far exploration work has been on a small portion of the VMS belt, which has been interpreted through drilling based on government mapping and company sampling to extend for 12 km.
Mineralization occurs below the main exhalite horizon and is located within mudstones, mudstone breccias and dacite breccias. The main exhalite horizon is 40 to 50 meters wide and can be traced for over 1 kilometer of strike length.
The initial discovery area for the BA claims was in the South Area, where assay results included up to 6.9% zinc, 2.3% lead and 759.6 grams silver obtained in a mudstone float sample during the exploration program in 2005.
But it has been the Central Area, 5 km northwest of the South Area of BA, that has undergone the most exploration, with 93 drill holes completed over a 400-meter section of exposed zone. In this area, the mineralized horizon is up to 80 meters thick and has been drilled to 300 meters below surface. A float sample of dacite yielded 0.92% zinc, 4.21% lead and 279.9 grams silver.
In the North Area, about 600 metres north of the company’s recent drilling, grab sampling of the upper horizon has returned up to 6.23% zinc, 0.86% lead and 81.4grams silver.
In mid-morning trading in Toronto, Mountain Boy Minerals was up 5.4% to 19.5¢ per share on 1.6 million shares traded.
Over the last year the junior explorer has traded in a range of 3¢-48.5¢ per share.
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