Australian lithium producer,
JORC 2012 MINERAL RESOURCE UPDATE
The updated JORC 2012 compliant Mineral Resource incorporates all historical data including drilling data acquired through a number of exploration campaigns completed by
GEOLOGYThe Pilgangoora Lithium-Tantalum deposit is located on the western flank of the East Strelley greenstone belt, in a sequence of highly deformed, fault bounded mafic dominated supracrustal rocks, which protrude into the Carlindi Batholith. Lithologies within the project area are dominantly tholeiitic metabasalts with thin interflow metasedimentary units. The metabasalts may contain abundant fine to coarse grained actinolite, possibly of hydrothermal origin, within the centre of the project area is an intrusive sequence of layered meta-ultramafic sills, with subordinate metamafic units, are up to 500m thick. This ultramafic sequence is comprised of peridotite, pyroxenite and Mg- and Fe-rich varieties of dolerite, with gradational contacts between units. Four phases of deformation have been recognised in the project area. The first phase (D1) produced the steeply inclined attitude of the supracrustal rock sequence by the development of a fold and thrust belt. A regional strike slip fault system developed across the greenstone belt in D2, as an interconnected network of layer parallel strike slip faults with discordant cross faults.
This faulting pattern is particularly strongly developed in the vicinity of the Central pegmatite domains. The D3 event is related to the pegmatite emplacement - these breach the D2 structures and have a local preference for exploitation of the Ultramafic rock package.
Three principal pegmatite groups or domains are identified in the centre of the project area - Eastern, Central and South. In addition, there are three outlying pegmatite groups, Lynas Find, Monster and
Contact:
Tel: +61 (0)8 6266 6266
(C) 2021 Electronic News Publishing, source