Highlights
Alligator’s CEO Greg Hall stated: “We are pleased to see Blackbush deposit mineralisation extending within the immediate target areas of the current resource to the west and east initially. The resource geology team is becoming adept at finding the redox boundary between oxidised and reduced sands, and hence quickly narrowing the search for the potentially economic roll front structures. In some instances, we are aided by the great exploration work done by the predecessor company historical gamma drilling intersections.”
Samphire 2024 Drilling Program Rationale
Exploration drilling re-commenced at Samphire late January 2024 to investigate potential extensions to uranium mineralisation in the Kanaka Bed sands within the Samphire palaeochannel system surrounding the Blackbush deposit. Initial focus has been on Blackbush Extensions 1 and 2 Target Areas (Figure 2). To date, forty-nine (49) holes for 4,089m have been drilled.
For background, the palaeochannels are ancient structures eroded into the underlying granites (being the source of uranium), where the Kanaka bed sands have been deposited at approx. 60 to 80 m depth. Not all these Kanaka bed sands are mineralised. Rather the dissolved uranium moves through the sand pore spaces with the saline groundwater within sand layers until it encounters a reducing medium (e.g. pyrite, carbonaceous matter) when the uranium deposits out around the sand grains. These deposition structures are called “roll fronts” and are the main structures being targeted during resource extension drilling.
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