Mt Pleasant

The Mt Pleasant tenement EL5954 comprises an area of 58 units (~166km2) on the Eastern Margin of the Silurian-Devonian Hill End Trough of the East Lachlan Fold Belt. MinRex has identified two key prospects of interest. Mt Pleasant was drilled by Pacminex Pty Limited and CSR Limited including 46 diamond holes 9 Percussion holes and Bombardi was drilled by Pacminex Pty Limited (1 Diamond Hole).

Historic Drill Results

Prospect Drill Hole From (m) To (m) Interval Cu (%) Ag (g/t) Zn (%)
Mt Pleasant DDH8832S/4 196.3 196.8 0.5 2.7
Bombardi DDH8832S/7 60 108 48 23 5.25

Geology and Mineralisation

The Mount Pleasant project lies on the eastern margin of the Silurian-Devonian Hill End Trough, a broad north-south oriented volcano-sedimentary basin in the Eastern Lachlan Fold Belt of NSW. The volcano-sedimentary sequence is chevron-folded into variably gently plunging anticlinal and synclinal structures. near EL 5954, the Hill End Trough is bounded on the east by the Wiagdon Thrust Fault.

East of the Wiagdon Fault, sediments and volcanics of the Biraganbil & Piambong Formations of the Middle-Upper Silurian Chesleigh Group, form part of the Capertee High. The Piambong Formation is intruded by a north-trending Carboniferous metadolerite. These units are the main host to the Mt Pleasant Mo-W porphyry mineralisation.

Mineralisation at the Mt Pleasant prospect consists of molybdenum, scheelite and pyrite with minor wolframite, chalcopyrite, sphalerite, galena, and bismuthinite occurring within a fracture controlled stockwork of quartz veins and veinlets.

Felsic-intermediate volcanics and sediments, dolerite dykes and felsic stock and dykes comprise the host lithologies. Mineralisation is strongly associated with the upper stockwork portion of an intrusive porphyritic granite.  Within the mineralised stockwork zone the metadolerite exhibits strong pervasive K-feldspar alteration in the upper zone, which can be up to 60m wide.

Molybdenite occurs as grains or thin seams proximal to quartz veining, and as fine disseminations within veins often forming distinctive “blue moly veins”.