Updated:
04 January 2007
Introduction to the geology of the Nolan's Bore LREE/P/U deposit
John Goulevitch
Consulting Geologist, Arafura Resources NL, Darwin
Introduction
The Nolan's Bore LREE/P/U deposit is located at 133° 14' 15"E ,22° 34' 40"S , approximately 135 km NNW of Alice Springs. The deposit was initially located in 1994 by PNC Exploration (Australia) Pty Ltd (Thevissen, 1995) and rediscovered by Arafura Resources NL in 1999 when the REE and phosphate potential of the deposit came to prominence. Current identified mineral resources (Indicated + Inferred, JORC compliant) stand at 18.6 Mt at 3.1% REO, 14% P2O5, and 0.021% U3O8 (Goulevitch, 2006).
The deposit is open laterally and at depth. The bulk of the mineralisation is currently restricted to an area about 1500 m × 1100 m in extent, and this may increase if suspected continuity to other fluorapatite outcrops 500-600 m along strike to the SW is confirmed. A fluorapatite band located about one kilometre west of the main deposit does not appear to be linked at shallow depths to the main deposit as mineralisation is absent in the intervening area.
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Related links
Evolution and metallogenesis of the North Australian Craton Conference Abstracts