Medaro Mining Corp. reported new, extremely positive lithium recovery data derived from use of the company's patent-pending spodumene processing technology (the "Technology"). In bench-scale laboratory tests performed recently under mild experimental conditions, application of the Technology culminated in extraction of greater than 95% of the lithium present in two very different b-spodumene compositions, one very pure (rich in lithium with low ppm concentrations of minor and trace elements), the other relatively impure (comparatively lithium-poor with significant ppm concentrations of small and trace elements).

Further explanation of the work, along with important analytical data and calculated values developed from it, appear below. 1 A small batch of granular high-purity -spodumene was formed by processing a piece of a large single crystal of spodumene excavated from a mine in the Black Hills of South Dakota, USA--the resulting granular material subsequently being calcined at ~1,050 °C to induce the -to- polymorphic phase transition. The values for ppm Li provided in this table, and also the ppm concentrations for other elements listed in Note below-- measured by Galbraith Laboratories Inc. (Knoxville, Tennessee, USA)--were communicated to Medaro in Galbraith Report 147768 dated 5/9/23.

3 The following analytically determined ppm concentrations of elements in the two unleached subsamples of the -spodumene attest to its high purity: Al, 146,000 and 148,000 ppm; Si, 286,000 and 285,000 ppm; Fe, 923 and 905 ppm; Mn, 413 and 410 ppm; Na, 1,750 and 1,760 ppm; Ca, 705 and 430 ppm; and Mg, 185 and 122 ppm. 1 A small batch of granular low-purity -spodumene was created using a heavy liquid to separate out grains of the mineral present in a small sample of a large mass of spodumene concentrate manufactured industrially in China, the resulting mineralogically pure mass of -spodumene then being calcined at ~1,050 °C to convert the grains in it to the crystallographic form. 2 The values for ppm Li provided in this table, and also the ppm concentrations for other elements listed in Note 3 below-- measured by Galbraith Laboratories Inc. (Knoxville, Tennessee, USA)--were communicated to Medaro in Galbraith Report 147822 dated 5/10/23.

The following analytically determined ppm concentrations of elements in the two unleached subsamples of the -spodumene reflect its lower purity: Al, 140,000 and 138,000 ppm; Si, 280,000 and 271,000 ppm; Fe, 7,690 and 7,790 ppm; Mn, 1,530 and 1,590 ppm; Na, 2,770 and 2,370 ppm; Ca, 6,500 and 6,530 ppm; and Mg, 2,760 and 2,370 ppm. 4 The average of the four values below, and the standard deviation of that average, are 95.7% and ±0.7% respectively.