The Straits Property covers uranium in lake sediment anomalies located by the Geological Survey of Canada with anomalous values ranging from 10 to 239 ppm against a background of approximately 5 ppm (97th percentile - 28 ppm) associated with copper values over 75 ppm (99th percentile) against a background of <20 ppm, associated with a north-northwest trending fault structure. The area was never explored for uranium prior to Silver Spruce's work.

Fugro Airborne Surveys flew an airborne radiometric/magnetic survey with 100-meter line spacing over the Straits Property in the fall of 2006. Twenty-one significant airborne radiometric targets were selected by consultant Ted Urquhart, of NuSense Geophysics, on the basis of the 95th percentile of U/Th ratios (uranium minimum 14 cps). Compilation, in conjunction with remote sensing studies carried out over the winter of 2007, showed significant structural complexity in the area and led to the staking of additional claims contiguous to the south, east and northeast of the existing claims for "protection" as it showed increased potential for uranium mineralization, especially along the northeast trending unconformity contact in the southern part of the group. Field work, including prospecting, detailed lake sediment sampling, soil sampling, geological mapping and rock sampling, was carried out in June 2007. A total of 219 lake sediment samples, 81 soil samples and 78 rock samples were taken and a number of uranium mineralized areas were located.

Prospecting covered the original 896 claim block in follow up of the airborne survey. Three areas of mineralization were defined giving 36 values greater than 100 ppm (0.01%) U3O8. Nine values exceeded 500 ppm (0.05% or 1.0 lb/ton) and four values exceeded 0.1% (2.0 lbs/ton), with a high value of 0.26% U3O8. Uranium/thorium ratios were good in most areas (minimum of 3:1), although high thorium values were associated with low U/Th ratios in some areas.

Three areas of anomalous lake sediments were defined. The strongest area, with values from 42 to 266 ppm uranium, and a number of values greater than 100 ppm, is located in the central portion of the claim group. It is developed along a northeast trending structure with offsetting northwest trending structures, over a seven-kilometer strike length. A total of 16 rock samples were taken from this area with nine giving values >100 ppm and two with values >0.1% U3O8. The highest value was 0.16% U3O8. The WD Showing is located within this anomaly. It is a cluster of large boulders of orthogneiss/ aragneiss showing strong uranophane staining within a radiometric anomaly 600 to 800 meters long that gave values from 92 to 1,391 ppm (0.14% or 2.8 lbs/ton) U3O8, with three of four samples >400 ppm.

A northeast trending zone in the northeastern part of the group gives values from 15.5 to 639 ppm uranium. This area includes the Henley Harbour area where a radiometric anomaly of 800 to 1,100 meters in length gave values of 439 ppm and 384 ppm U3O8 from two rock samples. Host rocks are aplites, mafic intrusives (gabbros), gneisses and pegmatites. In the western portion of the group, a linear, north-south trending zone gives values from 10.6 to 125 ppm.

The LP Showing, a large, irregular, pegmatite dike system which can be traced for a few hundred metres and which gives erratic values, is located in the northern portion of this area. Values from 10 samples ranged from 38 ppm to 2,650 ppm (0.26% or 5.2 lbs/ton) U3O8, with six samples exceeding 100 ppm and two exceeding 0.2% U3O8.

Exploration of the Straits Property planned for 2008 includes gridding, soil and stream geochemistry, RadonEx gas surveys, prospecting and geological mapping followed by trenching and drilling, if warranted.

 
Close