Binduli – Au
The 100% owned Binduli gold project area comprises ~98.8 km2 tenement package and is located 5-20km west of Kalgoorlie-Boulder, immediately adjacent to the south and west of the Company’s Teal gold mine. It is also adjacent to the Frogs Leg underground and White Foil open pit gold mines operated by Evolution.
Project geology at Binduli comprises Achaean felsic to intermediate volcanic and volcanoclastic rocks, porphyry intrusions and sediments within the hinge of the Goongarrie – Mt Pleasant Anticline. The area is bound to the west by the economically important Zuleika Shear Zone and to the west by the Abattoir Fault. The Zuleika Shear Zone and major faults and splays related to it are host to numerous significant gold deposits, a number of which are currently in production or development.
There are a number of priority targets within the project where historic drilling has intersected significant gold mineralisation including;
Bee Eater Prospect – 4m @ 21.1g/t and 1m @ 7.5g/t Au;
Honey Eater – 5m @ 5.74g/t, 2m @ 4.71g/t and 3m @ 3.25g/t Au;
Coot & Crake – 14m @ 2.55g/t, 9m @ 1.88g/t and 20m @ 6.67g/t Au; and
Darter – 10m @ 4.44g/t and 2m @ 1.84g/t Au.
Evolution have conducted one small reconnaissance aircore drilling program since inception of the JV and no significant results were returned.
During 2018, a drilling program comprising 85 RC holes for 8,096m was drilled to an average depth of 95m at the Crake prospect, 9km west of Kalgoorlie in the Western Australian goldfields, with results including:
- 13m @ 4.10g/t Au from 65m including 2m @ 18.52g/t Au from 75m (BRC18036)
- 15m @ 2.75g/t Au from 27m (BRC18069)
- 9m @ 4.38g/t Au from 39m including 1m @ 31.2g/t Au from 39m (BRC18079)
- 4m @ 4.90g/t Au from 52m and 10m @ 2.49g/t Au from 74m (BRC18044)
- 1m @ 26.10g/t Au from 68m (BRC18096)
- 3m @ 7.40g/t Au including 1m @ 19.60g/t Au from 27m and 2m @ 4.41g/t Au from 46m (BRC18071)
Stage 1 drilling (~5000m) focussed on areas where historical mineralisation had been delineated but appeared to have poor continuity. Stage 2 drilling (~3000m) then expanded the potential resource by infilling between the northern and southern drill areas and extending the northern strike length. The strike length is now increased to 420m from 360m. Most of the ore is defined within the top 25-100m and is open at depth, however deeper holes showed reasonable continuity to 140m vertical depth (e.g. BRC18093 6m @ 2.15 g/t Au from 163m and 1m @ 1.52 g/t Au from 171m).
The recent drill results continues to show that the Crake contains significant amounts of gold. In particular, narrow high grade veins typically >8 g/t Au are now being more frequently intersected throughout the mineralisation e.g. BRC18079 (9m @ 4.38 g/t Au from 39m including 1m @ 31.2 g/t Au from 39m), BRC18082 (2m @ 7.62 g/t Au including 1m @ 9.93 g/t Au from 40m), BRC18096 (1m @ 26.1 g/t Au from 68m) and BRC180363 (13m @ 4.10 g/t Au from 65m including 2m @ 18.52 g/t Au from 75m) and BRC18091 (1m @ 8.80 g/t Au from 29m).
In addition, several new, shallower lodes have been intersected as the drilling has stepped back to the west e.g. BRC18100 (5m @ 1.38 g/t Au from 33m), BRC18071 (3m @ 7.40 g/t Au from 27m), BRC18067 (6m @ 1.40 g/t Au from 36m) and BRC18092 (1m @ 3.18 g/t Au from 24m, 1m @ 4.72 g/t Au from 30m and 1m @ 4.22 g/t Au from 35m). This new mineralisation is consistent with other (multiple) stacked lodes now being interpreted at Crake. The lodes are typically 1-6m thick but can swell out to 25m.
The results show significant gold mineralisation over a 420m strike length and remains open along strike to the north and at depth. All data now being compiled to generate a maiden Mineral Resource estimate with metallurgical test work and initial mining studies to commence in the March Quarter.
The Binduli project is a high priority area for Intermin. Extension and resource drilling at Crake (Stage 3) will continue as a priority in 2019 together with high priority targets including Coote, Darter and Honeyeater. Coote which is only 700m west of Crake, and also appears to be directly along strike from the Janet Ivy open cut mine, has historic results that include 5m @ 19.62 g/t Au and 12m @ 2.33 g/t Au. Darter is located 1,600m north along strike from Crake and has recorded highly encouraging mineralisation such as 20m @ 2.85 g/t Au. Further north at Honeyeater, there are historic RC hits such as 1m @ 175 g/t Au and 17m @ 2.06 g/t Au. Most of these areas have not been subjected to adequate drilling and have considerable upside potential.