Hillgrove Resources Limited (Hillgrove) was granted ADI Round 2 programme subsidy funds to allow it to undertake diamond drill testing of a combined MT - gravity - magnetic anomaly located near its Kanmantoo mine, which it has termed the Stella target. This timely financial assistance from the SA Government enabled the completion of two diamond holes at Stella, and several zones of Cu-Au vein style mineralisation were intersected, including an albite-carbonate-copper-gold zone that is unequivocally post-Delamerian in age and magmatic in origin. This is newfound proof that a retrograde metamorphic type of hydrothermal mineralising system has been active in this area. During June-July 2012, inclined wholly HQ/NQ diamond cored holes SLD001 and SLD002 with a combined total penetration of 1370.09 m were drilled at Kanmantoo as part of Hillgrove's search for near mine copper-gold mineralisation occurrences of a scale that will warrant new capital investment. Three discrete geophysical targets at Stella prospect were selected for testing by these two holes, which were drilled from two drill pads constructed a short distance outside of and near the south-eastern boundary of Hillgrove's Mining Lease ML 6345. The company's acquired geophysical data had suggested that a different style of mineralisation to the Kanmantoo mine orebody's geology is present in the Stella prospect area, and this inference was supported by the discovery of an altered monzonite in the bottom-hole section of an historic EL 1582 drillhole from 1994. During 2017, rare outcropping altered albite-K feldspar veins from the area were radiometrically dated by Lucy McGee of the University of Adelaide, and yielded a maximum age of ~438 Ma, i.e. younger than the Delamerian Orogeny. The ADI drillholes have revealed the existence of two separate mineralised lodes that are spatially associated in the subsurface with the modelled MT conductivity "shell": a garnet-pyrrhotite high grade copper sulphide-gold zone intersected over 82.35 m in hole SLD001 which carries up to 10.2% Cu and 16.85 ppm Au, and an albite-carbonate-Cu sulphide-Au zone occupying a 43 m wide interval which has on average <1% Cu and <1 ppm Au. Both zones appear to be comprised of many narrow veins of the order of 1-2 m thick as intersected by the coring. Other, Kanmantoo style epigenetic Cu-Au and Pb-Zn-Ag veins were also encountered in positions that are somewhat distal to the conductive body. A total of 1177 half-core samples were taken at 1-metre hole depth intervals for laboratory assaying, and 59 selected samples of the mineralised zones were described from thin sections. 476 samples of differing rock stratigraphic units discerned within the drill cores were also subjected to determinations of their rock bulk density values. Initially, it was hypothesised by Hillgrove that a porphyry style of mineralisation might exist at Stella; however, the ADI project's drilling results (geochemistry and petrology) do not support this model. A possible model of mineral paragenesis for the unusual Stella mineralisation has been tentatively outlined by Roger Taylor, the consultant petrologist. Hillgrove stated that several breakthrough findings have been made by the project: 1. identification of a retrograde Cu-Au albite alteration system; 2. identification of a high-grade Cu-Au-Bi system lying nearby to said alteration system that has the potential to be economic and of significance for the continuity of the Kanmantoo mine operation; 3. Demonstrating that the magnetic plate models which have been generated for the Kanmantoo region bedrock are reliable tools to use for exploring for the high grade Cu-Au-Bi style of mineralisation where it lies under cover; and 4. Confirming that the magneto-telluric (MT) geophysical model has also identified the sulphide-bearing alteration system under cover.