The Mulwarrie Gold Project is located 150km north-west of Kalgoorlie in the Ularring District of the North Coolgardie Mineral Field. The project encompasses two contiguous tenements, M30/119 (68 Ha) and M30/145, which lie 10km north-west of the Davyhurst Mining centre.
Mulwarrie deposit location
The two tenements lie within a 10km wide greenstone belt which forms the north-west extension of the Coolgardie Line. The structurally dominant, north-trending Mt Ida fault lies approximately 4km east of the Mulwarrie Mining Centre. Most of the lithologies within this greenstone belt are steeply-dipping and well foliated along a NNW/SSE trend.
Mulwarrie tenements and simplified geology
In the late 1980’s, Callion Mining Pty Ltd mined the Mulwarrie Central West Pit extracting 24,344 tonnes @ 3.88g/t Au for 94.5 kg (3,037 ounces) of gold. The waste-to-ore stripping ratio was 5.25:1, with gold ore extracted to a maximum depth of 36 vertical metres over a strike length of 150m. Outside of this figure historical underground production in the Mulwarrie District, including the Mulwarrie Project area, has a recorded production of 26,344 ounces of gold from 19,728 tonnes for an average grade of 41.5g/t Au.
Following the three phases of Spitfire drilling, a maiden Mineral Resource Estimate has been completed for the Mulwarrie Gold Deposit. The Mineral Resource Estimate is 880,800t at 2.8g/t Au for 79,000oz, as summarised 8 below. Grade estimation was by Ordinary Kriging for Au using GEOVIA Surpac™ software.
The resource is classified as inferred only primarily due to a lack of oriented diamond core holes to assisting in supporting the structural model. In addition, very limited bulk density data is available to date. (See ASX releases dated for all details regarding drill hole information and assays; 16 May 2017, 3 July 2017, 27 September 2017 and the 30 January 2018).
Mulwarrie 3-D vein model – oblique view looking down 15° to Local Grid North