Todd River seeks extra floor close to massive Yilgarn copper anomaly

2021-07-13 11:04:55

Todd River Assets plans to get busy on the bottom this quarter at its Nerramyne challenge in WA’s Murchison area after making use of for additional floor subsequent to its massive, granted exploration licence masking a 40km-by-6km copper soil anomaly. The corporate says a newly outlined mafic intrusive will likely be one goal value investigating additional within the expanded Nerramyne challenge space.

The Nerramyne space, about 130km north-east of Geraldton port, is taken into account potential for platinum, palladium and copper.

With a 30 sq. kilometre tenement utilized for subsequent to its 462sq.km Nerramyne challenge, Todd River expects to manage a large space alongside the margin of the mineral-rich Yilgarn Craton and the Perth Basin Narryer terrane. Regional regolith floor sampling by the Geological Survey of WA, or “GSWA”, on a 4km-by-4km grid over the world has recognized a broad low-level copper-platinum-palladium anomaly that stretches over a 40km-by-6km space, Todd River has reported.

Administration stated one of the best end result from the GSWA sampling was from the northern a part of the challenge space, coincident with a big magnetic characteristic, the place a big 228ppm copper, 21ppb palladium and 8ppb platinum was returned. This in contrast with background ranges of 2-30 ppm copper and principally beneath detection ranges for palladium and platinum.

Todd River says the geochemical anomalism uncovered by the GSWA sampling gave the impression to be linked with as much as 5 magnetic options masking a mixed 40sq.km. Its deliberate wide-spaced geochemical sampling over the “interpreted mafic/ultramafic intrusions” – both auger or floor lag sampling – will likely be aimed toward producing precedence targets for extra sampling, geophysics and drilling.

Todd River secured the primary Nerramyne tenement package deal by way of its 2020 acquisition of Marlee Base Metals.

Administration stated detailed desk prime research and exploration planning work had highlighted the “presence of an unpegged possible mafic-ultramafic intrusive physique adjoining to the unique tenement”. They stated the applied-for floor was thought of “extremely potential for copper and valuable metals”.

Platinum minerals are generally related to these kinds of intrusions.

The present Nerramyne challenge covers an 8-10km-by-45km-long stretch alongside the margin of the Yilgarn Craton the place the Archean craton is juxtaposed in opposition to the Narryer terrane. The Yilgarn and Narryer rocks are mapped predominantly as gneissic terrane, with mafic rocks within the south. The north south trending Darling Fault transects the challenge space.

Nevertheless, a portion of the challenge space is roofed by wind-blown sands and alluvial sediments which probably masks any floor expression of mineralisation and render easy soil geochemistry unreliable. Earlier exploration has been restricted and concentrated solely in an space of round 6km within the northern portion of the tenement, the place a complete of 5 soil sampling traces and 11 lag sampling traces have been accomplished, with soils taken to 30cm depth and lag collected at floor. As anticipated, greater than half the soil samples collected had been reported as being transported sand, suggesting that the shallow soil sampling accomplished was ineffective.

Regardless of this the sampling did return substantial anomalous outcomes, with as much as 29.1ppb palladium, 18.2ppb platinum and 416ppm copper in lag sampling. Mapping and petrological research by Todd River additionally confirmed the presence of poorly uncovered gabbro and amphibolite related to the magnetic options and geochemical anomalism.

Todd River’s neighbours at Nerramyne embrace Chalice Mining, S2 Assets and AusQuest.

Is your ASX-listed firm doing one thing attention-grabbing? Contact: matt.birney@wanews.com.au

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