CEO Gervaise Heddle said the IP survey was designed to "test whether the large, chargeability anomaly that was previously identified over 1,000m of strike, and which is spatially coincident with gold mineralisation identified at surface, continues further to the south-east".
Greatland will use data from the survey and ongoing additional field mapping work to refine drill targeting for the area's maiden drilling campaign, which it expects to start in early June. It has outlined a program of more than 20 reverse circulation drill holes to depths of up to 300m for about 6,000m of drilling.
Last year, the first exploration campaign at Black Hills recovered multiple gold samples in thin sand cover within the first few days, establishing the presence of high-grade gold mineralisation at surface at the Saddle Reefs prospect.
Results from additional rock chip sampling over the prospect returned many values over 10g/t gold, peaking at 81.7g/t gold, quadrupling the strike length of surface gold mineralisation from 200m to 800m.
At the current 1.59p (US2.08c) level, Greatland's shares (AIM:GGP) have dropped 10.7% since the start of the year.