NexGen Completes Phase 1 Drilling; 3 Mineralized Holes at Rook

- October 16th, 2013

NexGen Energy Ltd. (TSXV:NXE) has completed its first phase drill program totaling 3,032m on Rook 1. Rook 1 is immediately adjacent to, and up strike approximately 2.1km northeast of the high-grade uranium discovery at Patterson Lake South.

NexGen Energy Ltd. (TSXV:NXE) has completed its first phase drill program totaling 3,032m on Rook 1. Rook 1 is immediately adjacent to, and up strike approximately 2.1km northeast of the high-grade uranium discovery at Patterson Lake South.

Highlights from the company’s drill program include:

  • 12 completed widely spaced holes tested a 1.6 km x 1.2 km area in which 11 holes contained significant clay and hematite alteration (see Figure 1).
  • Three holes on three separate parallel conductors intercepted mineralization.
  • Hole RK-13-05 (which is located on the conductor interpreted to be an extension of the PLS3b conductor which hosts the high grade PLS discoveries) encountered elevated levels of radioactivity (max total gamma 4,379 cps) over 2.7m within a 29m wide shear zone containing breccias, faults, fractures, and a variety of veining. Alteration features include massive silicification, clay alteration, hematite, chlorite, and desilicification (see Figure 2). Visible pitchblende was identified at a down-hole depth of 220.5-220.8m, within heavily altered and hematised breccia (see Figure 3).
  • Mineralization in holes RK-13-03 and -06 is located on other parallel conductors interpreted to be possible repetitions of the main PLS 3b conductor.

Two rigs completed 12 holes in an area of approximately 1.6km x 1.2km, with the closest two holes being 200m apart. Fertile receptive basement graphitic lithologies were intersected in 11 of the 12 completed holes below 48.7-82.6m of glacial and Cretaceous overburden. The 11 holes also contained significant clay and hematite alteration. All 12 holes contained evidence of repeated structural dislocation, being primarily brecciation, offset faulting, shearing, and veining.

Table 1 Rook 1 mineralization intercepts

Mineralized Intervals (m)
Drill Hole Depth From Depth To Downhole Width (m) Min cps Max cps
RK-13-03 131.9 132.7 0.8 350 508
137.0 137.4 0.4 326 495
149.9 150.4 0.5 345 1143
211.5 211.7 0.2 416 700
RK-13-05 215.7 218.4 2.7 380 4379
219.2 220.9 1.7 347 1771
RK-13-06 151.8 153.9 2.1 481 2297

 

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