A PROGRAM of infill geochemical sampling and geophysical surveys at Marmota Energy’s West Melton Copper-Gold Project on South Australia’s Yorke Peninsula has defined a significant geochemical target ready for immediate drill testing. A key target area that returned strongly anomalous coincident gold and copper-in-calcrete results was defined on the West Melton tenement, which is considered a high priority for immediate low-cost aircore drill testing.
Marmota began follow-up exploration in late 2013 over the target zone comprising infill ground magnetic surveys and calcrete sampling. Assay results from 25-metre spaced infill calcrete sampling have confirmed an exceptional copper in-calcrete anomaly coincident with gravity and magnetic features, which extends for more than 1.2km. Historic shallow copper workings lie at the south-western end of the anomaly.
Individual calcrete sample assays ranging up to 197ppm copper were returned. This is comparable to results recorded at other prospects on neighbouring tenements where follow-up drilling of geochemical anomalies of this tenor has intercepted high grade mineralization. Niton XRF spot readings of calcrete samples from the Areena workings area range up to 423ppm copper.
Ground geophysical surveys were commissioned in early 2014 complementing Marmota’s acquired data, defining coincident gravity and magnetic anomalies associated with the copper and gold-in-calcrete anomaly.
Modelling of the results indicates that potentially mineralized bodies could be as shallow as 15 metres. This is in line with mineralization at the nearby surface working at Areena. No drill holes have tested this anomaly with the nearest historic drill hole 4km away.
Shallow aircore drill testing of priority targets within the defined copper anomaly was planned to commence in mid-March. Several drill holes were also planned adjacent to the historic Areena workings.
Workings were undertaken in 1863 at the Areena mine shaft on the West Melton tenement. It was reported in a newspaper at the time, that ‘very good quality yellow and grey ore with green carbonate intermixed’ was extracted and was named the ‘Champion Load’. The DMITRE database reports that malachite and chalcopyrite were extracted from the Areena workings.
The West Melton project is on the northern Yorke Peninsula adjacent to recent copper-gold discoveries.