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Rock Tech Increases Lithium Tonnage at Georgia Lake by more than 40% in preparation of Preliminary Economic Study - Measured and Indicated Resources more than doubled

Resource Estimates Economic Studies

Rock Tech Increases Lithium Tonnage at Georgia Lake by more than 40% in

preparation of Preliminary Economic Study - Measured and Indicated Resources

more than doubled

VANCOUVER, June 27, 2018 /CNW/ - Rock Tech Lithium Inc. (the "Company" or "Rock Tech") [TSX-V:

RCK; Frankfurt: RJIB (WKN: A1XF0V)] is pleased to announce that DMT GmbH & Co. KG ("DMT") has

completed a NI 43-101 Technical Report (the "Technical Report") following the decision of reassessing

the resource potential at Rock Tech's flagship 100%-owned Georgia Lake lithium property in the Thunder

Bay Mining District of Northwest Ontario, Canada.

The updated resource estimate contained in the Technical Report represents both an increase in total

tonnage and an upgrade in resource classification relative to the previous NI 43-101 resource estimate

released in 2012. The updated resource estimate, which is the first result of the assistance of German

DMT Group with the aim of mining lithium, is as follows:

• Measured Resources: 1.89 million tonnes @ 1.04% lithium oxide ("Li2O");

• Indicated Resources: 4.68 million tonnes @ 1.00% Li2O;

• Inferred Resources: 6.72 million tonnes @ 1.16% Li2O.

"We are extremely pleased and excited to announce an updated resource estimate, including the first-

ever 'measured' resource for our Georgia Lake lithium project," said Martin Stephan, Chief Executive

Officer of Rock Tech. "And we are very happy in the current market environment that we own a hard rock

pegmatite project. The increased resource tonnage and upgraded resource classification bolster our

confidence in the future prospects and the economic feasibility of our flagship property. The new lithium-

bearing pegmatite discoveries made during the 2016 and 2017 field programs have not even been

included in the updated resource estimate and demonstrate the significant upside that still remains at

Georgia Lake."

"Rock Tech has made significant investment in exploring and developing the Georgia Lake lithium project,

which resulted in an initial NI 43-101 resource evaluation carried out in 2012. Since summer 2016, we

have increasingly worked on the further development of our property. A key aspect is the cooperation with

DMT, a leading international mining services provider, who is an integral part of the German TÜV NORD

Group – one of the most respected brands in Germany", added Dirk Harbecke, the chairman of Rock

Tech's Board of Directors. "The updated Technical Report with resource estimate will form the basis of

the first-ever Preliminary Economic Assessment ("PEA") on the Georgia Lake property."

In total, 175 drill holes totalling more than 29,000 metres were available for the current resource estimate,

in addition to a substantial amount of trenching and channel sampling.

The Technical Report will be filed on The System for Electronic Document Analysis and Retrieval

("SEDAR") within 45 days of this news release.

The majority of pegmatites in the Georgia Lake group can be classified as albite-spodumene type

pegmatites. Albite-spodumene type pegmatites are characterized by homogenous dykes with coarse-

grained spodumene and K-feldspar aligned perpendicular to the dyke walls. Spodumene is the dominant

or only lithium-bearing mineral.

Drill holes were drilled in a sectional pattern with drill hole spacing of around 60 metres in maximum

between sections and 40 to 60 metres along sections.

All scientific and technical information in this news release was reviewed and prepared under the

supervision of Karl Stephan Peters, EurGeol 787, an independent Qualified Person to Rock Tech.

About DMT GmbH & Co. KG

DMT is a global consortium, providing interdisciplinary services in the Mining, Oil & Gas, Civil Engineering

& Infrastructure and Plant Engineering markets with a client roster that includes Anglo American, BHP

Billiton, OMV, E.ON, Schlumberger, De Beers and leading institutes such as The World Bank and the

Asian Development Bank. DMT occupies 30 offices worldwide and belongs to the German certification

agency TÜV NORD GROUP. To date, DMT has completed several thousand projects in over 150

countries, working in over 25 countries in a typical year.

About Rock Tech Lithium:

Rock Tech Lithium is an exploration company focused on acquiring and exploring properties in the field of

lithium and other selected battery metals. The Georgia Lake Lithium project aims to develop a lithium-rich

pegmatite vein deposit for the purpose of mining. The deposit was discovered in the Thunder Bay Mining

district in northwestern Ontario/Canada, close to the Lake Superior, as early as 1955. Rock Tech Lithium

has been working increasingly on the property since 2016 – in a market environment, where the trend for

electric cars on the international market has been rising steeply for years. Analysts expect that more than

25% of newly sold cars in 2025 will be electrified, with the demand for Batteries and therefore Battery

metals such as Lithium expanding rapidly.

On behalf of the Board of Directors of the Company,

"Martin Stephan"

Martin Stephan

Director, Chief Executive Officer

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.

Statements included in this announcement, including statements concerning our plans, intentions and

expectations, which are not historical in nature are intended to be, and are hereby identified as, "forward‐

looking statements". Forward‐looking statements may be identified by words including "anticipates",

"believes", "intends", "estimates", "expects" and similar expressions. The Company cautions readers that

forward‐looking statements, including without limitation those relating to the Company's future operations

and business prospects, are subject to certain risks and uncertainties that could cause actual results to

differ materially from those indicated in the forward‐looking statements.

SOURCE Rock Tech Lithium Inc.

View original content with multimedia:

http://www.newswire.ca/en/releases/archive/June2018/27/c8746.html

%SEDAR: 00005870E

For further information: Brad Barnett, Chief Financial Officer, Rock Tech Lithium Inc., 777 Hornby

Street, Suite 600, Vancouver, B.C., V6Z 1S4, Telephone: (778) 358-5200, Facsimile: (604) 670-0033,

Email: [email protected]

CO: Rock Tech Lithium Inc.

CNW 09:00e 27-JUN-18