Coralie Jean is a shallow prospect that sits within 200m of the eastern edge of the greenstone – granite contact, a similar geologic position to the known Millrose Deposit.
The Coralie Jean Prospect was discovered in late 2016 when a reconnaissance sampling program across the northern part of the Yandal East tenements was conducted by Zebina Minerals. A single rock chip returned in excess of 60 g/t Au. On further inspection, outcropping and sub-cropping quartz veins were discovered in a highly sheared and contorted mafic volcanic.
The quartz vein at Coralie Jean sits in the ideal structural and stratigraphic position, being directly on the interpreted regional shear and approximately 200m west of the granite-greenstone contact, the same structural and stratigraphic setting that hosts the Millrose Deposit that contains 309,000oz of gold @ 2.4 g/t. A total of 81 rock chip samples have been collected returning exceptional results. The 81 samples were taken over a 1,000m strike length, with 55 samples over the inner 400m high grade zone averaging 17.3 g/t Au (see Figure 1). Of these 55 samples 17 returned values in excess of 20 g/t Au and 25 returned values in excess of 10 g/t Au.
Figure 1: Plan showing the distribution of high grade rock chips at Coralie Jean
Coralie Jean represents a very exciting target with high grade mineralisation evident over 400m of strike length. Whilst visiting Coralie Jean in September the Company collected 12 samples covering 1,000m of strike see Figure 1 and Table 1. The sampling included the interpreted extensions to the previously identified mineralisation and a series of samples in the high grade corridor. Of the 12 rock chip samples collected, 5 returned assays greater than 10 g/t with an additional sample returning 2.6 g/t. The other 6 samples were all taken from outside the 400m high grade corridor. Further mapping and sampling is required to trace the high grade zone beyond the known 400m strike length before a targeted drilling program to test the mineralisation is initiated.
|Sample No.||Type||Easting||Northing||Gold (g/t)|
Table 1. Overland’s recent rock chip sample results from Coralie Jean
(Refer ASX Announcement 23-10-2017)