Grid Metals Reports Increased Nickel Cobalt Recovery to Bulk Concentrate in Mayville Testwork
For Immediate Release
Exchange: TSX Venture
Toronto, Ontario
Symbol:GRDM
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Grid Metals Reports
Increased Nickel Cobalt Recovery to Bulk Concentrate in Mayville Testwork
Toronto, ON – May 8, 2019 – Grid Metals Corp. (TSX.V: GRDM | USOTC: MSMGF)
(“Grid” or “the Company”) today provided an update on the metal lurgical test work on
samples from its Mayville Deposi t located in southeastern Manit oba, Canada. The
laboratory flotation testwork program was focused on determining whether a satisfactory
bulk flotation concentrate coul d be produced which subsequently could be taken to
copper/nickel separation in order to produce marketable concentrate products (Ni>10%;
Cu>25%). Based on positive curr ent test results the next phase of testwork has been
commenced.
Summary of Results
A medium grade Mayville sample, selected by Grid Metals, gradi ng 0.48% Cu;
0.24% Ni, 0.02% cobalt was subjec ted to a laboratory scale flot ation program of
rougher and cleaner flotation. The best performing bulk concen trate achieved
(Float 7), contained a copper/nic kel grade of 23% with a cobalt grade of 0.40%.
The mineralogical composition wa s 19% pentlandite, 47% chalcopy rite, 22%
pyrrhotite and 13% non-sulphide gangue.
Recoveries to the bulk concentrate were nickel 69.8%, copper 9 0.1%, cobalt
51.7% and palladium 64.2%.
The iron-S/Pn ratio was reduced fr om 11:1 in the feed to 1.34:1 in the
concentrate, which is at a level considered acceptable for a bulk concentrate.
Preliminary precious metals anal ysis suggest precious metals ( palladium –
platinum – gold) are being upgraded and recovered.
The mineralogical character of the bulk concentrates produced from the sample
are considered favourable for making marketable nickel and copp er
concentrates.
Discussion
In the 2014 Preliminary Economic Assessment (“PEA”)* for the M akwa Mayville Project
nickel recovery for the Mayville deposit was an average of 41%. As such, improving
nickel recovery from Mayville and demonstrating the potential f or a quality marketable
nickel concentrate was an important recommendation of the PEA. There are ~105
million pounds of nickel in the Indicated category and 20 milli on pounds of nickel in the
Inferred category in the current resource at Mayville (see table below).
Mineralogical work has shown the cobalt is associated with pent landite which is the
recoverable mineral containing ni ckel. A certain level of pay-a bility from smelters for
cobalt as such may be anticipated provided marketable nickel co ncentrates can be
produced.
While the focus of the current tes twork program is nickel the r eport concludes that the
precious metals are being upgraded and recovered.
Next Phase of Metallurgical Testwork
The next phase of metallurgical testwork on Mayville ore samples has now commenced.
The program will be completed on a fresh Mayville composite sample. The program will
be designed to
1) confirm the flotation and bulk concentrate results previousl y achieved in
Mayville ore testwork
2) complete open cycle copper and nickel separation
3) Complete diagnostic mineralog y on the nickel and copper products produced.
Ian Ward P.Eng is overseeing the m etallurgical program as a con sultant to the
Company and is a Qualified Person for NI 43-101 purposes and ha s approved the
scientific and technical information in this release. The test program is being conducted
under contract with XPS Expert Process Solutions, a Glencore Co mpany, a Sudbury-
based technical consultancy and testing firm. XPS has extensive experience in
flowsheet development and nickel-copper-cobalt ores.
Makwa Mayville Resource ( RPA – November 2013)
Category and
Deposit
Tonnes Ni Cu Pt Pd Au Co
( Mt) (%) (%) (g/t) (g/t) (g/t) (%)
Indicated
Makwa 7.2 0.61 0.13 0.1 0.36 N/A 0.01
Mayville 26.6 0.18 0.44 0.05 0.14 0.05 N/A
Total Indicated 33.8 0.27 0.37 0.06 0.19 N/A N/A
Inferred
Makwa 0.7 0.27 0.08 0.05 0.14 N/A 0.02
Mayville 5.2 0.19 0.48 0.06 0.15 0.04 N/A
Total Inferred 5.8 0.19 0.43 0.06 0.15 N/A N/A
Note: Resources which are not reserves do not have demonstrated economic viability.
* The PEA ( RPA April 2014 ) completed by the Company is prel iminary in nature and
includes inferred mineral resour ces considered too speculative geologically to have the
economic considerations applied to them that would enable them to be categorized as
mineral reserves and there is no certainty that the PEA will be realized.
About Grid Metals Corp.
Grid is focused on its Makwa Mayville Project a sulphide nickel copper cobalt PGE
project located in southeastern Manitoba. The Company is positi oned to benefit from
the growing demand for metals used in batteries used to power e lectric vehicles. In
particular demand for nickel is expected to grow strongly in th e next five years. Grid
also has exposure to lithium t hrough its Mayville Lithium prope rty which has a historical
resource and to palladium through its exploration stage East Bu ll Lake Property near
Sudbury Ontario.
To find out more about Grid Metals, please visit our website at www.gridmetalscorp.com.
On Behalf of the Board of Grid Metals Corp.
Robin Dunbar – President, CEO & Director
Telephone: 416-955-4773 D a v i d B l a c k I n v e s t o r R e l a t i o n s
Email: [email protected] E m a i l : i n f o @ g r i d m e t a l s c o r p . c o m
We seek safe harbour.
This news release contains forward-look ing statements within the meaning of the United States Private Securities
Litigation Reform Act of 1995 and forward-looking informati on within the meaning of the Securities Act (Ontario)
(together, “forward-looking statements”). Such forward-looking statements may include the Company’s plans for its
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