Tungsten Mining - Drilling Commences at Mt Mulgine Tungsten Project
Tungsten Mining Limited (ASX:TGN) has commenced RC and diamond drilling at the Mt Mulgine Tungsten Project, located in the Murchison Region of WA. The 1700m drill program is targeting extensions to the current Resource, in areas previously identified as open. Tungsten is also stepping up its historical sampling program after the initial trial identified wide zones of mineralisation in previously unsampled core.
Emerging Australian tungsten developer, Tungsten Mining NL (ASX: TGN) (“Tungsten Mining” or “the Company”) is pleased to announce the commencement of drilling at its Mt Mulgine Tungsten Project.
The Mt Mulgine Project is located within the Murchison Region of Western Australia, approximately 350km north northeast of Perth. Tungsten Mining has 100% of the tungsten and molybdenum rights on a contiguous group of tenements that have been the subject of significant previous exploration for tungsten and molybdenum.
Two near surface Mineral Resources have been delineated by previous explorers at the Mulgine Trench and Mulgine Hill deposits. Currently, there is a combined Mineral Resource estimate of 72.2Mt at 0.18% WO3 and 230ppm Mo (0.10% WO3 cut-off – refer to ASX announcement dated 23 June 2016).
Figure 1: Plan showing historical and proposed drill hole location at Mulgine Hill.
Tungsten Mining is focussed on delivering on its strategic development plan to:
- Demonstrate a path to WO3 production and cash flow within 2 years;
- Increase the Mulgine Hill deposit resource by targeting previously drilled “open” areas, and
- Continue to gain a greater understanding of the metallurgy of the oxide layer of the Trench deposit.
A shallow 35 hole 1,500 metre reverse circulation (RC) drilling program targeting significant near surface tungsten mineralisation at the Mulgine Hill deposit and from the Bobby McGee pit within the Trench deposit commenced on 2 August 2016.
Figure 2: Cross section showing planned RC drilling targeting extensions of existing mineralisation.
In addition, a large diameter, 200 metre PQ diamond drilling program has also now commenced to collect metallurgical samples from Mulgine Hill, Bobby McGee and Trench. This will provide material for test work to confirm previous metallurgical studies that indicated conventional metallurgical treatment produces a saleable WO3 concentrate.
The RC and diamond drill programs are expected to take 10 days to complete. Results from the program are expected from early September 2016.
Whilst in the field, Tungsten Mining personnel will also complete a program of core sampling of historical diamond core. Previous operators, Minefields Exploration NL (Minefields) and Australian and New Zealand Exploration Company (ANZECO) drilled 213 diamond drillholes at the Mulgine Hill prospect over several campaigns from 1970 to 1980. Diamond holes were logged and UV lamped to determine mineralised material and only these mineralised intervals were assayed.
Subsequent inspection of core under UV light by Tungsten Mining indicated Minefields/ANZECO selective sampling potentially excluded significant tungsten mineralisation. Encouraging results were reported (see ASX announcement dated 23 June 2016) from the initial trial phase of a program designed to sample and assay the core, highlighting the potential to add to existing intersections plus to identify new zones of mineralisation from the historical drilling. It is expected that between 1,500 to 2,000 metres of core will be sampled in this program, with results expected over the coming months.
Based on the results of the drilling and historical core sampling program, it is expected that an updated Resource estimate will be undertaken in the December quarter.
Tungsten Mining’s Chief Executive Officer, Craig Ferrier, commented “This is an exciting period for the Company, with RC and diamond drilling underway, completion of the core sampling program and a major metallurgical test work program to follow. This work will greatly enhance our understanding of the Mulgine Hill orebody, its metallurgical characteristics and development pathway. In addition, the collection of sample from the Trench deposit complements our strategy to invest further in this large scale resource”.