The 100% owned Ajana Project is located within the Meso-Proterozoic age Northampton mineral field, situated near the western margin of the Yilgarn Craton – an area of renewed exploration interest following the discovery of Chalice Mining’s substantial Julimar deposit in the western Yilgarn.
A large number of copper and lead-zinc deposits were mined at Northampton between 1850 to 1973. The mined deposits were relatively small and associated with outcropping mineralisation. The deposits are structurally controlled and present as massive and disseminated sulphides.
Since mining ceased, there has been minimal exploration in the area and the vast majority of the Northampton mineral field remains underexplored.
St George believes that modern exploration techniques and concepts, including the latest geophysical surveys, have the potential to identify blind deposits of mineralisation that may be present under 20m to 100m of cover.
Map showing the location of the Ajana Project and highlighting the project tenements.
St George completed a detailed airborne magnetic survey covering the Ajana Project in early April 2022 which clearly defined a 20km-long north-northwest trending elliptical magnetically anomalous body. This large Ajana magnetic anomaly includes several concentric features and is cut by the same dykes that host the historic lead, zinc and copper sulphide deposits in the Northampton mineral field.
Inversion modelling of the magnetic data by Newexco suggests the magnetic anomaly is indicative of a late-stage, potentially layered mafic intrusion which may be prospective to host significant Ni-Cu-PGEs. There is no known outcrop and minimal historic exploration over the interpreted intrusion.
Map of the Ajana granted exploration licences with airborne magnetics data set against regional magnetics. The large magnetic feature is interpreted to be a mafic intrusion.