Boadicea Managing Director
HIGHLIGHTS
Application for Hanns Gully tenement (EPMA28125) adds lithium exploration in Boadicea's portfolio.
Low-cost entry gives Boadicea excellent upside in new lithium discovery project in
Hanns Gully is located in the Croydon district of
Targeting greisen style igneous lithium deposits that are strongly associated with tin.
Total area of 296km2.
BOA exploration strategy now fully committed to four (4) of the key electric vehicle (EV) metals - copper, nickel, cobalt, lithium.
The BOA portfolio of exploration metals forecast to experience a huge demand increase by between 1.5 to 5.5 times by 2030.
Tenement has additional exploration potential for gold, tin, tungsten and tantalum mineralisation.
The key focus of BOA's lithium exploration in the region is the association of lithium with extensive high grade tin mineralisation and previously identified greisen granite within the Esmeralda Granite that covers almost 100% of the area covered by the application.
Hanns Gully Geology
The application is centred on historic tin workings known as the Stanhills tin field within the Esmeralda granite. Between 1900 and 1936 it is estimated that 260 tonnes of cassiterite concentrates were mined from numerous small but high-grade lodes. Previous explorers reported that tin mineralisation is commonly associated with strong alteration of the granitic rocks. These greisen zones are fine-grained and composed principally of quartz and muscovite in approximately equal quantities. Lithium micas zinnwaldite and lepidolite are commonly associated with altered granites.
The Stanhill field tin lodes are typically associated with chloritic and/or greisen (quartz-muscovite-topaz) alteration of the host rocks. The lodes commonly contain cassiterite, quartz and fluorite as well as sulphide minerals including chalcopyrite, pyrite, sphalerite, galena and arsenopyrite. Initial exploration will be focussed on the potential for large greisen bodies that could contain lithium mineralisation.
Features of Greisen Style Lithium Mineralisation
There are about 120 different lithium bearing minerals. The target of exploration at Hanns Gully is greisen igneous formation, which are hydrothermally altered rocks that are associated with granitic intrusions.
Greisens correspond to some parts of a granite intrusion transformed by hot hydrothermal fluids into an assemblage mainly composed of muscovite and quartz. Greisens are porous rocks and in these pores can be found apatites, cassiterite and sulphides. Greisens are located at the roofs of granite intrusions as well as along faults intersecting the granites. Greisens developed in crustal granites are typically associated with Sn-W deposits[1].
As an example of a world class greisen-style deposit is the Cinovec deposit in the
Contact:
Tel: 61 (0) 409 858 053
Email: info@boadicea.net.au
Web: www.boadicea.net.au
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