First Lithium Minerals Corp. announce positive results from the Magneto-Telluric ("MT") geophysical surveys at its 100% owned OCA lithium project ("OCA Project") in the Antofagasta Region of northern Chile. The MT geophysical survey program was conducted by SouthernRock Geophysics S.A. and
comprised data collection of 60 Tensor MT sites spaced 600m along 8 lines on two identified sectors at the northeastern prospect areas at the salar de Ascotan (approx. 1,775 ha), salar de Carcote (approx. 1,275 ha), and the southern prospect area of the salar de Ollague (approx. 300 ha). The 1D and 2D inversion models were generated with industry standard Geotools software and included static corrections provided by the previous TEM surveying. Responses observed in final MT inversion model resistivity sections are coherent with those delivered by the TEM survey, both with regard to the tenor of the conductivity and the depth to the top of a hyper conductive layer. Further to the existing information, the MT data has provided an estimate to the base of a potential brine layer beyond the scope of TEM survey, which may prove useful in defining future resource estimates. The results of the survey indicate highly conductive horizontal zones of less than 1.0 Ohm-meter signatures which are typically associated with brine mineralization in hydrogeologic settings across the Andean plateau. Preliminary hydrogeological modelling suggests a gradually increasing brine signature starting at approximately 200 meters beneath the surface with widths up to 400 meters reaching a consolidated lacustrine base or bedrock at approximately 600 meters at depth. Highly conductive zones of less than 1.0 Ohm-meter also exhibit large extent and continuity in the southeastern sectors of the Carcote prospects and the northeastern sectors of the Ascotan prospects.