Partial relinquishment report for ELs 6647 to 6650, 6652, 7380 to 7382 and final report for EL 6651, for the period ending 21-06-1992

Abstract

A programme of stream sediment and soil sampling of the licences was conducted. A total of 741 heavy mineral samples have been collected from all the licences. a number of non-kimberlitic chromites were recovered in drainages sourced in the Antrim Plateau Volcanics, the Burrel Creek Formation, and the Berinka Volcanics. No diamonds or kimberlitic indicator minerals were recovered from the relinquished portions of these licences. In addition, aeromagnetic data was acquired from the NTGS. Although regional magnetic interpretations were carried out by the NTGS, Stockdale's Geophysisists are reinterpreting the digital data covered by the JV tenements. Airphotos and TM are also being used, to further assess the tenement areas. A total of 7 dipolar magnetic anomalies were chosen for follow up with ground magnetics and/or heavy mineral sampling. the follow up showed them to be of no interest, with respect to primary diamondiferous intrusives. All anomalies were explained as being a result of local accumulation of iron rich surface material. Geochemical samples were taken at each site of each of the 741 heavy mineral samples. the geochemical results of the relinquished areas do not show any variation from background.