Post by
TSXPLAYER1 on Feb 12, 2014 11:11am
BGM news out today.
Barkerville assays 2.1 m of 160 g/t Au at Cow Mountain
2014-02-12 10:16 ET - News Release
Mr. J. Frank Callaghan reports
BARKERVILLE GOLD MINES REPORTS BOTH METALLIC SCREEN & LEAD COLLECTION FIRE ASSAY RESULTS OF FIFTEEN DIAMOND DRILL HOLES CONDUCTED ON COW MT.
Barkerville Gold Mines Ltd. has released results from complete hole metallic screen and lead collection fire assay results of 15 diamond drill holes conducted on Cow Mountain in 2011.
As recommended in the company's National Instrument 43-101 report dated Dec. 31, 2012 (see news release dated June 19, 2013), and mentioned in the news release dated Dec. 9, 2013, all reject samples from drill core that was originally analyzed in 2011 with standard fire assays and unassayed infill core samples from those same holes collected in 2013 have been sent for 1,000-gram metallic screen, and 50-gram lead collection/gravimetric fire assay. Considering coarse-grained gold is common in the area it has been determined that the original 30-gram standard fire assay method possibly undervalued gold grade. Once all drill data has been received, the company will provide a comparative analysis between new and original drill data. The company will also provide an updated NI 43-101 resource estimate.
Metallic screen and lead collection fire assay results of 15 drill holes have been received, and significant intercepts are listed in the table.
Highlights include:
CM11-30: 2.1 metres (6.9 feet) of 160 grams per tonne (4.668 ounces per ton) gold between 45.4 and 47.5 metres (148.9 and 155.8 feet);
CM11-35: 3.9 metres (12.8 feet) of 13.11 grams per tonne (0.382 ounce per ton) gold between 175.2 and 179.1 metres (574.7 and 587.5 feet);
CM11-37: 5.6 metres (18.4 feet) of 8.77 grams per tonne (0.256 ounce per ton) gold between 51.4 and 57 metres (168.6 and 187 feet);
CM11-40: 4.6 metres (15.1 feet) of 8.9 grams per tonne (0.26 ounce per ton) gold between 68.4 and 73 metres (224.4 and 239.5 feet);
CM11-102: 2.2 metres (7.2 feet) of 293 grams per tonne (8.633 ounce per ton) gold between 77.4 and 79.6 metres (254 and 261.2 feet); 1.5 metres (4.8 feet) of 158.8 grams per tonne (4.632 ounces per ton) gold between 192.9 and 194.4 metres (633 and 637.8 feet); and 1.4 metres (4.5 feet) of 72.6 grams per tonne (2.117 ounces per ton) gold between 249.8 and 251.2 metres (819.5 and 824 feet).
SIGNIFICANT INTERCEPTS OF THE WHOLE HOLE SAMPLES
Hole ID Core sampling interval Metallic fire
assay
From To Width Au Au
(feet) (feet) (feet) (metre) (g/t) (oz/t)
CM11-06 55.0 65.0 10.0 3.0 0.46 0.013
CM11-16 No significant (greater and equal to 0.4 g/t Au) intercept
CM11-30 148.9 155.8 6.9 2.1 160.0 4.668
894.0 895.3 1.3 0.4 20.0 0.583
CM11-33 444.3 446.2 1.9 0.6 37.55 1.095
647.2 667.3 20.1 6.1 2.58 0.075
CM11-35 375.4 392.6 17.2 5.2 1.86 0.054
574.7 587.5 12.8 3.9 13.11 0.382
CM11-37 168.6 187.0 18.4 5.6 8.77 0.256
242.8 250.0 7.2 2.2 4.85 0.141
CM11-39 842.6 850.8 8.2 2.5 2.18 0.064
CM11-40 112.4 118.8 6.4 2.0 3.99* 0.116*
224.4 239.5 15.1 4.6 8.90 0.260
CM11-41 252.8 257.1 4.3 1.3 5.85 0.171
CM11-42 225.0 226.2 1.2 0.4 1.05 0.031
CM11-47 337.3 342.1 4.8 1.5 3.08 0.090
CM11-48 63.7 73.1 9.4 2.9 4.74 0.138
107.9 114.8 6.9 2.1 7.37 0.215
CM11-102 53.8 55.2 1.4 0.4 13.66 0.398
85.1 93.1 8.0 2.4 5.74 0.167
225.3 244.7 19.4 5.9 4.74 0.138
254.0 261.2 7.2 2.2 293.0 8.633
342.5 344.7 2.2 0.7 84.6 2.467
517.0 524.6 7.6 2.3 4.42 0.129
633.0 637.8 4.8 1.5 158.8 4.632
819.5 824.0 4.5 1.4 72.6 2.117
CM11-122 701.8 717.8 16.0 4.9 2.86 0.083
1,264.0 1,277 13.0 4.0 2.89 0.084
1,314.5 1,330.3 15.8 4.8 2.90 0.085
CM11-131 481.0 494.8 13.8 4.2 4.74 0.138
520.7 537.8 17.1 5.2 3.82 0.111
Note: 0.4 gram per tonne cut-off and uncapped grade;
*lead collection/gravimetric fire assay
All the significant intercepts of CM11 drill holes described above and in the table may not be the true width. Due to the complexity of analyzing three types of quartz veins; namely, strike, diagonal and orthogonal veins, the true width will be determined after the company's 3-D geological model is updated.
The standard fire assay technique was conducted on a relatively small (30-gram) aliquot of sample material that may or may not be truly representative of the gold content of the sample as a whole, particularly if coarse gold or visible gold is present that is notoriously difficult to homogenize within a sample pulp. The screen metallic technique utilized in the company's double assay program effectively evaluates 1,000 grams of pulverized material for each sample, and was specifically developed by laboratories to measure coarse or visible gold within pulverized sample materials to provide a more representative estimate of overall gold content.
The collection of reject samples, infill core sampling and core sample cutting of 239 Cow Mountain drill holes conducted in 2007, 2009, 2010 and 2011 has been completed. News on complete holes that include metallic screen fire assay results of reject samples and lead collection fire assay results of previously unassayed infill core samples will be published as they become available. The company is in the process of utilizing this information to update the drill hole database.
Drill core processing included descriptive logging and sampling for geochemical analyses. The NQ-size drill core was cut/split in two halves using saws at the company's Lowhee Creek compound in Wells-Barkerville, central British Columbia. One-half of the core is put in a sample bag. After all the samples are placed in the rice bags at the mine site, they are transported by BGM's personnel to a shipping company in Quesnel for trans-shipment to ACME Analytical Laboratories Ltd. in Vancouver, both of which are under the Bureau Veritas Group Company, for analysis. Sample preparation and geochemical assaying is done at ACME, following its own internal standards for quality control and verification. The gold assaying method uses a 1,000-gram metallic screen gold assay and 50-gram lead collection fire assay. ACME is certified under the Assayers Certification Program of B.C.
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