Osmond Resources Limited (ASX:OSM) has confirmed the handheld XRF (pXRF) analysis results in recent exploration activities at the Sandford Project, EL6958, located in western Victoria, Australia.
Base metals and TREO (Total Rare Earth Oxide) anomalism in an independent laboratory analysis of soil samples collected earlier last quarter has confirmed the pXRF analysis results.
Significant and coincident Zn-Pb-Cu-Ba-S anomalism has been identified within a regional NW- SE structural zone contained by a subsurface greenstone belt on the southwest margin of an exposed block of Cambrian basement sequences and intrusives.
The nature and location of the anomalism to the large regional scale structures and intrusive systems is suggestive of SEDEX (sedimentary exhalative) style mineralisation.
“The Sandford soil sample assay results are highly encouraging as they have identified a significant Zinc-Copper-Sulphur anomaly within a structural corridor known to host base metal mineralization. These large regional scale structures on the margins of volcanic domains provide potential conduits for mineralized fluids. The strong coincidence in base metals, barium and sulphur anomalism from assays suggests a potential for SEDEX type mineralization which we aim to test with follow up soils and geophysics,” Osmond Resources Executive Director, Andrew Shearer, said.
Several small base metal occurrences are known within the region (Figure 2Figure 3) adding validity to the geological model, including Nolan’s Creek (Pb-Zn-Ag-Cu-Au), Gossan A (Pb-Zn- Cu) and Robertson Creek (Au, Cu, Ni, Pb, Zn). Nolan’s Creek being the largest of the occurrences, underwent a brief period of mining in the late 1890’s. The mineralization style at Nolan’s Creek has historically been compared to Broken Hill SEDEX type and more recently to Kanmantoo Belt strata bound Hydrothermal and submarine exhalate Pb-Zn-Ag type.
Further to the emerging base metal prospect, rare earth anomalism has been confirmed through soil sample assays with a peak value of 1148ppm TREO (Figure 3). This TREO anomalism loosely correlates with the Jurassic aged trachytic lava flows of the Dens Hill Formation.
Osmond Resources are now in the process of designing a follow up infill soils program to define the extent of anomalism and to correlate with regional geophysical modelling and interpretation. Osmond Resources expect to carry out the infill soils program in 1Q 2023.
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