AuKing Mining Limited Prospectus

A U K ING M INING L IMITED I NDEPENDENT T ECHNICAL A SSESSMENT R EPORT – W ESTERN A USTRALIAN M INERAL A SSETS CSA Global Report Nº R278.2020 9 Figure 4: Map of Eastern, Central, and Western Zones of the Lamboo Province within the Halls Creek Orogen Source: GSWA Report 159 (Occhipinti et.al. , 2016) The Western Zone comprises flysch and felsic volcanic rocks which are deformed and metamorphosed; potassic, I-type granitic and sub-volcanic rocks, as well as gabbroic rocks, and layered mafic/ultramafic intrusions. The Western Zone is thought to represent the eastern margin of the buried Kimberley Craton. The Central Zone comprises turbiditic metasedimentary and mafic volcanic and volcaniclastic rocks of the Tickalara Metamorphics, deposited by 1865 Ma. These rocks were intruded by tonalitic sheets and deformed and metamorphosed between 1865–1856 Ma and 1850–1845Ma. A younger succession of rocks comprising the sedimentary rocks and mafic and felsic volcanic rocks of the Koongie Park Formation (KPF) were deposited in a possible rifted arc setting at around 1843 Ma. Layered mafic-ultramafic bodies were intruded into the Central Zone at 1856, 1845 and 1830 Ma. Large volumes of granite and gabbro of the Sally Downs Supersuite intruded the Central Zone during the Halls Creek Orogeny at 1835–1805Ma. Researchers interpret the Central zone to be an arc-like domain developed on a continental fragment. The Eastern Zone has exposed older basement mafic and felsic volcanic rocks dated at 1910 Ma – the Ding Dong Downs Volcanics. These are unconformably overlain by low-grade metasedimentary and metavolcanic rocks of the Halls Creek Group. At the base of the Halls Creek Group the quartz sandstone of the Saunders Creek Formation contains ancient detrital zircon crystals (dated 3600–2512 Ma). Overlying mafic volcanic rocks of the Biscay Formation in the lower part of the Halls Creek Group were erupted at 1880 Ma on a passive continental margin along the western edge of the North Australian Craton. The overlying turbiditic metasedimentary rocks of the Olympio Formation divided into upper and lower units separated by alkaline volcanism dated at 1857–1848 Ma. The Halls Creek Group was deformed and metamorphosed during the 6. Independent Technical Report continued 84