The company said that the Bow Discovery is the result of radon anomalies testing associated with a severely disrupted versatile time domain electromagnetic (VTEM) conductor.
The Bow Discovery was discovered while testing a 5.4 pCi/L radon in water anomaly with drill hole BO-15-02, which intersected weak to moderate radioactivity (10,000 to 10,200 cps) within a 5.0m section (206.5m to 211.5m) associated with visible veinlets, flecks and blebs of pitchblende.
The company identified two narrow (0.5m) weakly mineralized (<500 to 700 cps) intervals at drill hole Hole BO-15-13, starting from 233.5m and 244.5m associated with a sheared, pyritic graphitic pelitic gneiss (mylonite).
Additionally, an elevated radioactivity (150 to <500 cps) has been intersected at the drills holes BO-15-11, -12, and -14, associated with favourable geology, strong alteration, and persistent structure with associated strong radon anomalies.
The company is planning to land drill testing of the VTEM conductor northeast along trend from the Bow Discovery, in summer 2015.
NexGen exploration and development vice-president Garrett Ainsworth said: "The widespread strong alteration and anomalous radioactivity intersected with only 14 drill holes at the Bow Discovery is remarkable, and continues to fortify the Patterson conductor corridor within the southwest Athabasca basin as a world class uranium district.
"High grade mineralization has been intersected across an approximate 14 km strike length of the Patterson corridor, of which our Rook I property dominantly covers 9.5 km and hosts our Arrow zone and Bow Discovery.
"The summer 2015 drill program will prioritize testing on land to the northeast of Bow where a strong gravity low anomaly suggests another hydrothermal alteration cell with associated uranium mineralization may be present."