MGX Minerals Inc. (XMG: CNX) has
filed a technical report on SEDAR related to the environmental treatment and
recovery of lithium from oil industry waste water and continued development of
its technology portfolio. The report is now available for viewing under the Company’s
profile at www.sedar.com.

As
previously announced, MGX and PurLucid Treatment Solutions (“PurLucid) are
developing brine treatment and lithium recovery technologies that provide
superior performance while meeting a broad spectrum of treatment needs. The
technology suite complements existing MGX technologies (U.S. Provisional Patent
#62/419,011) ( see press release dated March 6,2017 ).

The
independent engineering group Saskatchewan Research Council (“SRC”)
recently validated the rapid recovery technology results ( see press release
dated April 20, 2017 ) from Phase 1 testing by Dr. McEachern. Phase II bench
top testing commenced in February with new brine pre-treatment and
concentration designs. The new design incorporates PurLucid’s proprietary
filtration technology and process optimization tools. In four consecutive
bench-scale trials, lithium was successfully concentrated by more than 25-fold
and the resulting brines contained far fewer impurities (notabl y calcium,
magnesium, boron and sodium) that impede subsequent production of lithium
solids. MGX plans to conduct a second round of independent testing with SRC
once the upgraded design process is finalized.

Example
results from Phase II testing are shown in the table below. Step 1 permeate
demonstrates the limited lithium loss during initial environmental treatment
(deoiling and scale reduction) of oilfield brines for reuse.

The report further discusses the recovery of lithium solids which are currently undergoing analysis for purity and crystallinity by x-ray diffraction and energy dispersive x-ray spectroscopy.

Also discussed in the report are on-going trials in oil industry wastewater treatment and the suitability of these waters as sources for subsequent lithium recovery. Excellent results have been achieved in oil removal (>99%) from waters with free and emulsified oil concentrations as high as 20,000 mg/L. Silica and other scale forming ions have been removed across a range of industrial brines making these waters suitable for further processing in lithium recovery and/or for reuse in the oil industry.

Sample chain of custody was managed by Roy Eccles (M.Sc., P. Geo.), a qualified person under National Instrument (N.I.) 43-101 Standards, and Dr. Preston McEachern, CEO of PurLucid. Samples were submitted to Maxxam Analytical Labs (“Maxxam”) for ICP-ES analysis. Maxxam is an independent, ISO-certified analytical laboratory.

Qualified Person

The technical portions of this press release were prepared by Dr. Preston McEachern, CEO of PurLucid Treatment Solutions Inc., and have been reviewed by Andris Kikauka (P. Geo.), Vice President of Exploration for MGX Minerals. Mr. Kikauka is a non-independent Qualified Person within the meaning of National Instrument (N.I.) 43-101 Standards.

MGX may decide to advance its petrolithium projects into production without first establishing mineral resources supported by an independent technical report or completing a feasibility study. A production decision without the benefit of a technical report independently establishing mineral resources or reserves and any feasibility study demonstrating economic and technical viability creates increased uncertainty and heightens economic and technical risks of failure. Historically, such projects have a much higher risk of economic or technical failure.

About MGX Minerals

MGX Minerals is a diversified Canadian mining company engaged in the development of large-scale industrial mineral portfolios in western Canada and the United States. The Company operates lithium, magnesium and silicon projects throughout British Columbia and Alberta as well as petrolithium exploration in Utah. Learn more at www.mgxminerals.com .

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