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Location: 90 km S from Port Hedland, Western Australia, Australia
Level 2, 146 Colin StreetPO Box 884West PerthWestern Australia, Australia6005
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The Pilgangoora pegmatite deposit is one of the largest hard rock lithium deposits in the world. The Pilgangoora pegmatite district is located within the East Strelley greenstone belt, approximately 30 km east of Wodgina. Three principal pegmatite groups or domains are identified in the centre of the project area: Eastern, Central and South. Pegmatites of the principal domains have a strike length of up to 1.4 km, and mostly range in thickness from 1-30 m, although pegmatites in the Central domain may be up to 70 m thick. Two outlying pegmatite groups, Monster and Southern have strike lengths of up to 350 m and 500 m respectively. Pegmatites strike sub-parallel to the dominant north-northwest trending fabric of the greenstone belt with variable dips ranging from shallow to subvertical to the east. The pegmatite domains at Pilgangoora are composites of several intrusive phases emplaced sequentially over the duration of the late-stage Turner River orogeny. Lithium grade in the pegmatite domains is subject to two main influences, one primary and the other secondary. The primary ore types comprise mainly coarse spodumene, K-feldspar and quartz, and the abundance of spodumene relative to the other two gangue phases is likely the main control on grade variations in zones grading better than 2% Li2O.The main modelled mineralised domains are hosted in an area stretching 8,500m (north-south from Lynas Find and Monster down to South End), ranging between 50-1,500m (east-west) in multiple veins and ranging between (minus) -550m and 220m RL (AMSL).The mineralisation dips between 20 and 60 degrees at a dip direction between 050 and 115 degrees for the majority of the domains. The Monster zone strikes 040 to 045 degrees and dips moderately to the south-east. In the Lynas area the pegmatite varies between horizontal and 50-degree dip towards the south and south-east.
