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Zacatecas Lithium Brine Drilling Commenced
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26 June 2017
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Quarterly Activity Statement & Appendix 5B
Quarterly Report
28 April 2017
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Half Yearly Report
13 March 2017
Quarterly Activity Statement & Appendix 5B
Quarterly Activity and Cashflow Report
30 January 2017

SAN DOMINGO - USA (Zenith Minerals 100%, Bradda Head Ltd earning initial 55%)

The project covers a 9km by 1.5km lithium-bearing pegmatite dyke swarm that intrudes Proterozoic mafic gneiss host rocks that are in turn locally overlain by Tertiary age volcanic and sedimentary rocks.

 

Figure 1: San Domingo Lithium Project- Due Diligence Surface Rock Sampling Results

(Blue box – outline of Zenith claims and lease applications, Grey boxes - approximate area of excised claims,

* indicates sample close to boundary of excised claim with poorly constrained location)

 
Initial mapping and sampling by Zenith’s consultants to date has identified 10 lithium bearing pegmatite dykes ranging in outcrop size up to 60m in width and up to 600m in length within the area subject to Zenith’s tenements.  Initial continuous rock chip sampling conducted within the new applications has returned very encouraging results up to 5m @ 1.97% Li2O including 2.4m @ 2.49% Li2O, and sampling of Lithia King workings returned up to 1.44% Li2O over a 3 metre composite.  A further 3 lithium bearing pegmatite dykes are known to occur at least partly within small claims that are believed to be excised from the land recently applied for by Zenith. 

Zenith rock chip sample locations and assay results are shown in Figure 1 and are further described in JORC tables appended to this release.

The pegmatite dykes show clear zonation, with lithium enrichment within the inner ‘’core’’ zones.  Historical records refer to spodumene crystals up to 11 feet long at the Lithia King pegmatite (held by Zenith). 

Lithium (as spodumene and amblygonite concentrates) along with tantalum was produced from small scale mining of the pegmatites within the district during the period 1947 – 1952, historic production of lithium from two small scale mines within Zenith’s claims produced amblygonite concentrates grading from 7.4 to 8.5% Li2O (Arizona Bureau of Mines Bulletin 1952).   However the area has been subject to sparse systematic exploration for lithium.  No drilling for lithium appears to have been completed since the early 1950s when diamond drilling on 4 of the pegmatite bodies and associated minor surface and underground exploration is mentioned in historical documents.  Very little detail on this work has been sighted by the Company, other than partial results from one drillhole and anecdotal information mentioning “..considerable thicknesses of  spodumene-bearing pegmatite..” penetrated in several other holes reported by a 3rd party.  Since hole locations, sampling details and assay methodology are not known the Company considers the results not to be reportable under the JORC Code.  A third party reference to a 1980-82 exploration program for tantalum and niobium does not mention lithium analyses.