McBride Exploration Work

For complete information concerning the McBride River Property please click here to review in detail the November 2005 McBride River Geophysical Report prepared by Laurence Stephenson, P.Eng. and updated in April 2007.

The aeromagnetic survey was conducted by the Geological Survey of Canada (“GSC”) as part of their program to cover most of the map sheets of Canada with aeromagnetic surveys. Completed in 1981 the surveys were under the control of the GSC. No correction was made for regional variation and the magnetic data was compiled from information recorded along the flight lines over the area. No further details are available. The GSC aeromagnetic map sheet is 104 I/3 (Aeromagnetic Map 9193G). A magnetic low was observed in the central area of the McBride Property close to the Discovery Vein. The data that was presented in this map was obtained from NRCAN (National Research Council of Canada) by S.J.V. Consultants Ltd. in digital form and an "inversion analysis" was performed.

As the data collected was regional in nature only general observations could be made. These included that a circular magnetic high dominated the southern edge of the area with weaker magnetic highs to the north and along the western and northern borders, and with an interpreted NW-SE geological structural trend. Further interpretation of the data suggests some shapes of the geological causes of the magnetics which adds to the general data base and understanding of the region.

Geophysics of McBride Property
No previous ground geophysical surveying has been reported for the McBride Property although such surveying is recommended. During July of 2005, a ground magnetic and VLF (Very Low Frequency) Electromagnetic (EM) survey was conducted on the grid covering the Discovery, D4 vein and the intervening area. This survey was conducted by personnel from S .J.V. Consultants Ltd. The following is a brief summary of their geophysical report.

The magnetic data outlined four linear magnetic trends across the McBride Property striking NNE (labeled AA; BB; CC and DD) in the central portion of the grid. In the SW corner of the grid the strongest magnetic intensity was observed in a dipole effect. Two VLF features were identified in the NW corner of the grid unrelated to any magnetic response.

In reviewing of the geophysics in light of the geology of the McBride Property, the author of the Report were able to add two additional zones of geophysical interest. In the southern part of the grid a small anomaly (EE) is shown to have gone off the grid, and if the NNE trend identified for the other zone swere followed, would trend into the area of the “B2” Vein and is therefore of significant interest. In the area of the magnetic high in the SW of the grid, a low indentation in its eastern portion is directly associated with the area of the “Discovery Vein.”

A further observation is that the magnetic anomalies BB and CC which extend from the high magnetics in the SW roughly bracket the trend of the “Discovery Vein” towards the weakly mineralized “D4” area. The north end of these anomalies is associated with a base metal soil geochem zone.

A quick review was made of the VLF data but as no visit was made to that area no geological opinion can be rendered. Since the area is mapped as sediments and the soil geochem does not reveal any significant data, a low priority geological inspection of the continuous EM response for what it might reveal could be undertaken.

A continuation of the magnetic survey to the south is warranted, especially in light of the gold geochem anomaly in that area.

Exploration Geochemistry

Regional Geochem Survey
The regional geochem survey was completed under the auspices of the government of British Columbia and was released to the public in the early 1990’s as the NTS104I Cry Lake Regional Geochemical Survey, (“RGS 44”). The results were obtained by analyzing archived sediment pulps collected in 1981 under a joint Federal and Provincial stream sediment and water survey. Fine grained stream sediment material, one to two kilograms in weight, was collected from active stream channels and placed in kraft bags and unfiltered water samples excluding suspended particles were collected. Field observations of the sample site were recorded. Field dried samples were shipped to Kamloops Research Assay and Laboratory for final preparation before being sent to Chemex Labratories in North Vancouver for analysis. Water samples were analyzed by Bondar Clegg. Analytical reproductivity gave a high degree of confidence in the quality of both the field sampling and analytical methods.

The area of the McBride Property has several creeks draining it and demonstrated the following characteristics. Not unexpectedly gold and base metal values were in the higher percentiles for these creeks. Specifically, in the highest percentile, copper was found in creeks to the north and south and gold and zinc (and mercury) on the main creek draining the area of the Discovery Vein and the "B" Vein to the south. Lead and molybdenum were associated with all these creeks in the middle percentile range reported. The drainage area size and sample density does not lend itself to any meaningful interpretation other than the area being anomalous and worthy of further investigation.