Canadian Company Commences Due Diligence on Macarthur Minerals' Ravensthorpe Lithium Acreage

VANCOUVER, BC--(Marketwired - July 28, 2016) -

THIS NEWS RELEASE IS NOT FOR DISTRIBUTION TO UNITED STATES SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

Macarthur Minerals Limited (TSX VENTURE: MMS) (the "Company" or "Macarthur Minerals") is pleased to announce that a Canadian lithium company has commenced due diligence for its farm-into Macarthur Minerals' lithium acreage at Ravensthorpe, Western Australia. Under the terms of the farm-in, the Canadian company is required to expend a minimum of A$2 million to earn a 51% interest in the lithium acreage at Ravensthorpe. The farm-in only relates to five percent (91 km²) of Macarthur Minerals' total Western Australia lithium acreage of 1,678 square kilometres.

David Taplin, President, CEO and Director of Macarthur commented:

"Macarthur Minerals is excited that the Canadian lithium company has commenced its due diligence for its farm-into Macarthur's Ravensthorpe acreage. Macarthur's acreage is in the vicinity of a recent lithium mineralisation discovery by another Australian lithium company for which pegmatite samples included assays up to 4.1% Li₂O."

HIGH GRADE LITHIUM OF ADJACENT PROJECTS

As indicated in Figure 1, Macarthur Minerals' Exploration Licence Application E74/587 is immediately adjacent to Australian Securities Exchange ("ASX") listed Lithium Australia NL's ("LIA") Horseshoe, Phillips South and Deep Purple Prospects. LIA has announced the presence of lithium bearing pegmatites for Phillips South and Horseshoe from which rock chips have been taken with assays ranging between 2.4% Li₂O and up to 4.1% Li₂O.¹

The Ravensthorpe acreage, at its closest point, is approximately 7 kilometres from ASX listed Galaxy Resources Limited's and General Mining Corporation Limited's Mount Cattlin Lithium Project, which is currently mining and processing spodumene and tantalum concentrate.

TERMS OF FARM-IN

The Company (through its 100% owned subsidiary Macarthur Lithium Pty Ltd) and Zadar Ventures Limited (TSX VENTURE: ZAD) ("ZAD") entered into a binding Memorandum of Understanding ("MOU") on July, 12, 2016 for a Farm-in Agreement ("FIA") for lithium exploration on the Company's Ravensthorpe lithium acreage.

The key terms of the MOU are:

• the Company and ZAD will enter into a FIA for the Ravensthorpe lithium acreage within 4 months.

• entry into the FIA is conditional upon ZAD conducting due diligence within 3 months to confirm that the Ravensthorpe acreage is prospective for lithium and for the Company to conduct due diligence on ZAD.

• ZAD will initially earn into 51% of the Ravensthorpe lithium acreage by expending a total of A$2,000,000 within 2 years from the grant of the Ravensthorpe exploration licences.

• ZAD will earn into an additional 24% of the Ravensthorpe lithium acreage taking its total interest to 75% upon completing a positive NI43-101 Preliminary Economic Assessment ("PEA") within 3 years from the grant of the Ravensthorpe exploration licences.

• MLi have a free carried interest during and after farm-in, for the life of the Ravensthorpe tenure and any related project, of not less than 25%.

• the Company will manage the Ravensthorpe lithium exploration program and will be paid a project management fee of 15% of total expenditure until ZAD has completed a positive NI 43-101 PEA.

• ZAD will pay for all expenditure and project management fees in advance and MLi will be reimbursed all its associated costs in full.

• once ZAD has acquired 75% interest in the Ravensthorpe lithium acreage, ZAD will have the first right to offer to purchase MLi's remaining 25% interest.

• if ZAD does not meet expenditure of A$200,000 in the first 3 months after the FIA has been entered into or by the time exploration licences are granted, whichever is later, the FIA will end and 100% of the ownership of the Ravensthorpe lithium acreage will revert back to MLi.

• if ZAD does not complete a positive NI 43-101 PEA, a joint venture will be formed (ZAD 51% and MLi 49%), whereby MLi continues to have free carried interest of 25%, effectively only contributing to 24% of expenditure.

The FIA, although not envisaged, may be subject to regulatory approval.

DUE DILIGENCE

The Canadian company plans to commence initial field reconnaissance on Macarthur Minerals' lithium acreage at Ravensthorpe in the near future. Initial due diligence will focus on Exploration Licence Application E74/587 and the Southern part of Exploration Licence Application E74/588. As indicated in Figure 1, those areas contain or are adjacent to pegmatites previously mapped by the Geological Survey of Western Australia (GSWA). The Company is currently in the process of arranging landowner access for conducting initial field reconnaissance.

RAVENSTHORPE ACREAGE STATUS

Exploration Licence Applications E74/587 and E74/588 are progressing routinely through the application process towards grant. The applications have received no objections under the Mining Act 1978 (WA) and have been now advertised under the expedited procedure in accordance with the Native Title Act 1993 (Cth). Provided no objections are received, it is anticipated that the applications will be granted in early November. Until such time, prospecting activities are still permitted across the application areas.

COMPANY'S STRATEGY FOR ZADAR VENTURES FARM-IN

The Company holds 20 Exploration Licence Applications and prospective interest in rights to lithium covering a total area of 1,678 square kilometres (414,642 acres) in the Pilbara, and in the Ravensthorpe and the Edah regions of Western Australia.

The ZAD farm-in allows the Company to accelerate its exploration activities over its large acreage package prospective for lithium, which is one of the largest for any junior listed company. This allows the Company to maximise its efforts on its Pilbara acreage.

The Company will manage the exploration program for the Ravensthorpe acreage contributing the resources of its very experienced lithium technical team, comprising Emeritus Professor Ken Collerson, a member of the Company's lithium advisory board, Dr Andrew Scogings, Mr Graham Jeffress and Mr Ralph Porter from CSA Global Pty Ltd, who are independent Western Australia based consultants with substantial experience in lithium.

ABOUT ZADAR VENTURES LIMITED

Zadar Ventures Ltd. is a Resource Company listed on the TSX Venture Exchange (TSX VENTURE: ZAD) focused on the acquisition and exploration of economically viable green energy resources in jurisdictions favourable to mining and industry.

ABOUT MACARTHUR MINERALS LIMITED (TSX VENTURE: MMS)

Macarthur Minerals Limited is an exploration and development company that is focused on identifying and developing high grade lithium and counter cyclical investments that complement Macarthur's capabilities.

On behalf of the Board of Directors,

MACARTHUR MINERALS LIMITED

"Cameron McCall"

Cameron McCall, Chairman

NEITHER TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.

Caution Regarding Forward-Looking Statements

Certain of the statements made and information contained in this press release may constitute forward-looking information and forward-looking statements (collectively, "forward-looking statements") within the meaning of applicable securities laws. The forward-looking statements in this press release reflect the current expectations, assumptions or beliefs of the Company based upon information currently available to the Company. With respect to forward-looking statements contained in this press release, assumptions have been made regarding, among other things, the timely receipt of required approvals, the reliability of information, including historical mineral resource or mineral reserve estimates, prepared and/or published by third parties that are referenced in this press release or was otherwise relied upon by the Company in preparing this press release. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and no assurance can be given that these expectations will prove to be correct as actual results or developments may differ materially from those projected in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include fluctuations in exchange rates and certain commodity prices, uncertainties related to mineral title in the project, unforeseen technology changes that results in a reduction in iron ore demand or substitution by other metals or materials, the discovery of new large low cost deposits of iron ore, uncertainty in successfully returning the project into full operation, and the general level of global economic activity. Readers are cautioned not to place undue reliance on forward-looking statements due to the inherent uncertainty thereof. Such statements relate to future events and expectations and, as such, involve known and unknown risks and uncertainties. The forward-looking statements contained in this press release are made as of the date of this press release and except as may otherwise be required pursuant to applicable laws, the Company does not assume any obligation to update or revise these forward-looking statements, whether as a result of new information, future events or otherwise.

Figure 1 - Macarthur's Ravensthorpe acreage

¹ ASX Announcement dated July16, 2016 http://lithium-au.com/wp-content/uploads/2013/09/12thjuly.pdf

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