Skyfall Prospect 'Targeting a new type of Rare Earth Deposit' EL 27151 Diamond Drilling Final Report 2014

Abstract

SKDH05 failed to intersect any significant rare earth numbers expect for the already known flat lying surface mineralisation. SKDH05 did not intersect the magmatic body interpreted to be the source of the rare earth mineralisation. Cover sequence above the Carpentarian seems to be thicker than what Spectrum expected. SKDH05 provided Spectrum with new information on the regional stratigraphy and unit thicknesses. Spectrum observed the presence of crude oil trapped in Antrim Plateau basalt's vesicles and fractures. Scanning electron microscopy analysis of the deeper flat lying rock showed the presence of sedimentary - detrital monazites. However, in the zone at 297m evidence of secondary mobilisation by basinal brines within the rocks exists. Spectrum hypothesises that the more economically important types of rare earth minerals such as those found in the Skyfall surface mineralised zone (xenotime and crandallite group minerals) or at Stromberg (xenotime), are formed where these primary zones hit the surface and weather. Some secondary mobilisation and concentration mechanisms are active within the basin particularly around fault zones