Zenith Minerals (ASX:ZNC) has released further high grade lithium results from its Zacatecas Lithium Project in Mexico. Surface samples were taken from 0.4m to 1m depth across the salt pans, with results from 277ppm up to 924ppm lithium returned. The Zacatecas Project forms part of the $5m JV with Bradda Head, whereby Bradda Head can earn up to 55% equity in the US and Mexican lithium portfolio.
- Highly anomalous results up to 924ppm lithium from new surface sediment samples taken on salt pans in the Zacatecas Lithium Project in central Mexico – comparable to and higher than those from competitor lithium brine projects in Mexico and the USA;
- First phase geophysical surveys using the passive seismic technique confirm initial interpretation of a sedimentary basin beneath the surface salt lakes;
- As recently announced (7th March 2017) the project forms part of the new Bradda Head lithium joint venture, whereby a private company controlled by prominent UK investor Jim Mellon has agreed to spend an initial US$5M to earn 55% equity to unlock the potential of Zenith’s USA and Mexican lithium project portfolio;
- Zenith previously advised (17th January 2017) that lithium brines grading up to 2.1% lithium have been reported in regional water and surface sediment sampling programs conducted by the Mexican Federal Government from solar evaporation ponds for salt production on an adjacent salt lake (10km west of the Zacatecas Lithium Project).
- These regional water results confirm lithium enriched source brines are present in the district, as well as demonstrating that concentration of lithium by traditional solar evaporation methods is possible: Four water samples returned 1.2%, 1.4%, 1.4% and 2.1% lithium, these very high-grade lithium brines are similar to post-concentration brine feedstock to lithium brine production facilities;
- Ground based electrical geophysical surveys are planned prior to drill testing in 2017.
Zenith Minerals Limited (“Zenith” or “the Company”) is pleased to advise that highly anomalous results up to 924ppm lithium have been returned from new surface sediment samples taken on salt pans in the Zacatecas Lithium Project in central Mexico (Figures 1 – 3). The samples were collected as part of an orientation surface sampling program designed to assess lithium levels in sediments at two different depths (0.4 metre to 1.0 metre) below the surface of the salt pans. The program indicates that lithium levels appear to be increasing at depth with 4 of the 5 samples showing a marked increase in lithium levels in the deeper sample (average 52% greater), within values ranging from 277ppm to 924ppm lithium. Following this orientation sampling work a systematic 1.0m depth surface sampling program (1km spaced samples) across the three Zacatecas project concessions is now planned to define the distribution of lithium in surface sediment samples that will assist in future drill design to test for subsurface lithium brines.
A geophysical survey using the passive seismic technique has also now been successfully completed over the Zacatecas concessions confirming the initial interpretation of a sedimentary basin beneath the surface salt lakes. A near surface layer 50 to locally 70m thick is resolved throughout all three concession areas. In addition flat lying to gently dipping reflectors (150 – 180m depth) are observed on several profiles however they cannot be definitively modelled at this stage, but are likely to represent deeper sedimentary layers in the basin (Figure 4).