MGX Minerals Inc. (OTCQB: MGXMF) (CSE: XMG) reports that joint-venture partner A.I.S. Resources (“A.I.S.”) (AIS) has received the final TEM Geophysics report from Quantec. The report includes a detailed analysis and interpretation of the TEM profiles. Two major aquifer structures based on low resistivity have been identified.
A.I.S. Exploration Director and CEO, Phil Thomas, undertook a 20 trench sampling program using a 321C Caterpillar excavator to trench down to 5 metres at each point selected at the Salinitas JV Project in the Salinas Grandes Salar, Salta Province, Argentina. The objective was to identify the types of sediments with a specific resistivity close to the surface and identify the porosity of this unit, eg stratigraphic units of green-grey clays, sand, black volcanic sands or brown clays. The black sands have a porosity of 22-32% +/- 3%.
Preparations have commenced to start a drilling program in the next two weeks subject to drill rig availability. Some drill pad preparation and roads have been upgraded and drill rig fluid pits have been dug at trench site 12 and 18 in preparation for drill hole 1, and if successful, drill hole 2.
Figure 1. The above 1D model at 2.5 Hz shows the two very low resistivity areas at a depth of 300-500m (located by yellow circles). The black sands/gravels were encountered trenching at UTM 802000 which is the relationship we were seeking to correlate. The geophysics data was changed to 0 to 20 ohm-m, rather than 0 to 100, and was modified in order to better highlight zones of very low resistivity and to better differentiate the resistivity within the 0 to 10 ohm-m range.
Figure 2. The above schematic shows a very low resistivity zone, possibly a lithium rich aquifer in black volcanic sands given the trenching correlation. The red triangle is the trenching locations.
Figure 3. Above is the second zone of low resistivity, where there is large area approximately 2km wide by 150 metres in thickness in what is interpreted to be paleochannels.
Left: Shows the significant amount of brine that flowed into the 5m x 4m x 4m pit, some 36,000 litres within 18 hours. Center: shows the transition from the green-gray clay possibly montmorillite into black sands starting to show through. Right: shows the black sands unit with brine flowing into it.