Middle Island eager to apply polish to Sandstone

THE INSIDE STORY: With much love in the air for gold at present it makes perfect sense that a company looking to acquire a project would want one it can bring on stream sooner rather than later.

The acquisition of the Sandstone gold project by Middle Island Resources (ASX: MDI) is a case in point.

In 2013, Middle Island let it be known it was eager to find advanced gold (and gold/copper) opportunities, primarily within Australia and Africa.

The company made its objectives on the subject very clear – it was in the market to acquire an asset which would meet its stringent criteria: that it would mitigate shareholder exposure to sovereign and political risk; provide near-term production and cash flow potential; and require limited capital expenditure to develop.

As its search deepened it became apparent Australia would be the best jurisdiction to find, and work up, such an asset with positive administrative synergies, a favourable recent exchange rate and relatively lower operating cost environment.

There was also a much appreciative audience from improving market support for ASX-listed gold stocks.

The project to raise its head above the parapet was the Sandstone gold project and processing facility, located 12 kilometres south of the township of Sandstone, approximately 600km northeast of Perth between the mining towns of Mt Magnet and Leinster in the East Murchison Mineral Field of Western Australia.

The project is an attractive package, comprising 100 per cent interest in two granted Mining Leases and a JORC 2004 Mineral Resource of approximately 11 million tonnes at 1.4 grams per tonne gold for total contained gold of around 480,000 ounces of gold.

With this comes a 600,000 tonnes per annum CIP processing plant – which has been on care and maintenance since 2010 – a power plant, workshops and offices, licenced tailings facility, bore field, three fully equipped camps on freehold title in the nearby settlement of Sandstone and a substantially inventory of equipment and spares.

Sandstone is a proven gold producer with historic production in excess of one million ounces of gold from surface, underground and open pit operations since the 1890s.

The area has also been productive in more recent times under the watch of previous owners, including Herald Resources in the 1990’s and Troy Resources (ASX TRY), which operated the mine from 1999 to 2010.

Troy upgraded the plant to 600,000 tonnes per annum capacity in 1999 then extracted and processed a combined total of approximately 4.4 million tonnes of ore at an average grade of 3.6g/t gold producing 508,000 ounces of gold before placing the operation on care and maintenance in September 2010.

“The plant is in good condition and we anticipate spending five to eight million dollars to refurbish it and bring it back on line,” Middle Island Resources managing director Rick Yeates told The Resources Roadhouse.

After acquiring Sandstone from Troy in December 2012, Southern Cross Gold (SXG) never produced any gold, instead its objective was relocating the processing plant to its Marda project, which also never occurred.

SXG merged with Poly Metals to form Black Oak Minerals with the new entity more focused on assets in New South Wales, only to be placed into administration in 2015 and subsequently liquidation in early 2016.

Middle Island was able to pick up the Sandstone project for a highly-competitive price of $2.5 million due to its unloved status, completing the acquisition in July, which involved the original payment of a $250,000 deposit and $1.25 million at completion of the deal.

A further $500,000 is due at 18 months following completion (or $400,000, if paid by 11 October 2016), plus $500,000 on re-commencement of gold production from any source.

The tenements come with a legacy 2 per cent NSR royalty payable to Troy, along with a royalty of $1 per tonne of ore mined and processed from M57/129 to Herald and National Resources Exploration.

The transaction value of $2.5 million equates to approximately US$4 per resource ounce.

Although it didn’t produce any gold from the project, SXG did complete pit optimisations on the two main deposits of Two Mile and Shillington in 2012-2013, using then current contract mining and processing costs, as well as process recoveries from Troy’s metallurgical testwork and production records, using a gold price of $1,600 per ounce.

These numbers would stack up well today considering the drop in operating costs and buoyancy of the Australian dollar gold price current producers enjoy.

The historical work included drilling that identified two exploration targets at Two Mile Hill, the first being a 250m long and 70m wide sheeted-veined, tonalite intrusive, which returned historic drill intercepts of:

141m at 2.30g/t gold;
353.3m at 1.04g/t gold; and
156.3m at 1.14g/t gold.

The second is a strongly mineralised banded iron formation (BIF), which obliquely intersects the tonalite at depth where drilling of the BIF adjacent to the tonalite returned:

8.5m at 49g/t gold;
13.7m at 26g/t gold;
4.5m at 25g/t gold; and
3.5m at 20g/t gold.

“These two targets are brownfields opportunities that will not be addressed or included in the current feasibility program and study,” Yeates explained.

“The second target will, however, be tested via a diamond drilling program scheduled to commence late September.”

SXG’s optimisation of the Shillington and Two Mile open pit deposits estimated Indicated and Inferred Resources within the pit shells of approximately 1.1 million tonnes at 1.4g/t gold.

“Our immediate plans include a program of drilling to upgrade these deposits and the Shillington North deposit to Indicated Resource status under the JORC 2012 guidelines prior to completing a Pre-feasibility Study,” Yeates said.

“We have commenced our maiden drilling program at Sandstone, comprising approximately 153 holes for around 4,200 metres of RC drilling, designed to infill existing resources at the Two Mile Hill, Shillington and Shillington North deposits.

“Our primary objective is to upgrade the balance of Inferred resources comprising the three deposits (approximately 15%) into the Indicated category for inclusion in the PFS in September.

“We are also hoping to extend mineralisation around the periphery of the optimised pit shells in order to define additional resources for inclusion in the PFS.”

The drilling will comprise two components; the first being shallow, vertical holes on a 20m by 20m offset pattern to upgrade and extend known mineralised laterite flanking the Two Mile Hill deposit.

The second will comprise deeper, angled holes drilled within and adjacent to the optimum pit shell margins to upgrade the balance of the existing Inferred resources into the Indicated category.

Once drilling has been completed and the data fully validated, all new and existing drilling data for the Two Mile Hill, Shillington and Shillington North deposits will be applied in re-estimating the resources (2012 JORC Code guidelines) to underpin the PFS.

“Hopefully we will be in a position very soon to be able to make the call to proceed with recommissioning Sandstone’s existing 600,000 tonnes per annum CIP gold processing plant,” Yeates said.

“All that will be decided once we, hopefully, receive a positive outcome from the PFS in December.”

Middle Island Resources Limited (ASX: MDI)
…The Short Story

HEAD OFFICE
Suite 1
2 Richardson Street
West Perth WA 6005

Ph: +61 8 9322 1430

Email: info@middleisland.com.au
Website: www.middleisland.com.au

DIRECTORS
Peter Thomas, Rick Yeates, Beau Nicholls