Methodical approach and 3D insight help NexGen achieve 95% hit rate on its high-grade Arrow zone

NexGen Energy, a uranium exploration company working in the Athabasca Basin of Saskatchewan, is achieving a high hit rate on its high-grade Arrow zone.

By combining 3D geological insight, integrated exploration techniques and comprehensive data compilation in Geosoft Target, NexGen has hit the buried Arrow zone on the Rook I property that straddles the southwest margin of Saskatchewan’s Athabasca basin in almost every hole.

The company holds several land positions in the basin and is currently wrapping up a 20,000 m winter drill program on its flagship Rook 1 property.

“On all of our properties, our technical team completes data compilations from historical and recent drilling, geochemical and geophysical surveys that we input to Geosoft Target,” says Garrett Ainsworth, VP of Exploration. “Many of our projects have large compilation databases, which we illustrate as fully integrated 3D maps that we use to optimize our drill targeting.”

This methodical approach has helped NexGen achieve a 95% hit rate on its growing, high-grade Arrow zone, where mineralization remains open in all directions. Of the 42 holes drilled on the Arrow zone, 40 have returned high grade uranium mineralization. 

“Every drill hole tries to dial into the structural controls at Arrow that help us to predict where the next blow out of mineralization will be,” says Ainsworth. “When drilling is in progress, the ease and speed upon which we can create 3D maps in Geosoft Target allows us to tweak our targeting on the fly.”

NexGen recently drill-tested radon anomalies associated with a severely disrupted VTEM conductor about 3.7 km northeast of and along the same trend as Arrow, intersecting widespread alteration and anomalous radioactivity at the Bow discovery.

This summer, NexGen will follow up the new discovery with further testing along the VTEM conductor where it is coincident with a gravity low, while continuing to advance the Arrow zone. In both cases, Target will help the company plan the drill program and display the results for shareholders.

“Target is an integral part of our day to day exploration at the Arrow zone and regionally,” says Ainsworth. “It is valuable software for developing comprehensive compilations and graphically communicating important information to investors and geologists.”

In an interview with Earth Explorer, Ainsworth, who won the Colin Spence award for excellence in global mineral exploration for his contribution to the discovery of the nearby Triple R Deposit at Patterson Lake South (PLS), explains the company’s approach to exploration in the Basin.

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