Vancouver, British Columbia – January21, 2021 – M. Maurice Giroux, President and CEO of Mosaic Minerals
Corp. (“Mosaic” or the “Company”) (CSE: MOC) is pleased to inform report that the Company expanded the
Crisafy Project, adding 5 claims to the South for an extra 280 hectares to the initial Crisafy Gold Property
located in Crisafy Township, SNRC 32G07 in the Chibougamau area in Quebec.

The Crisafy Property, originally 22 claims (see news release January 6, 2021), now comprises 27 mineral claims
covering 1,515hectares located in the very prolific Obatogamau neo-archean volcanic formation. The
formation is composed mainly of basalt and andesitic basalt, that hosts Iamgold’s Nelligan and Monster Lake
gold deposits as well as the Northern Superior’s recent Lac Surprise discovery, a few kilometers to the north.

The decision to expand the perimeter followed a detailed examination of the geological and
geophysical context of the property area. A geological map, derived from an interpretation by
CONSOREM, Consortium de Recherche en Exploration Minérale of Université du Québec à
Chicoutimi, of all the deformation corridors extrapolated from electromagnetic conductor axis
(INPUT) of the project area. The map shows the position of the Nelligan and Monster Lake Iamgold
discoveries and of the recent Northern Superior Lac Surprise discovery within the deformation
corridors. Mosaic has secured its three blocks of claims, namely, Philibert-1, Opawica North and
Crisafy within those corridors and the map illustrates their strategic positioning in reference to
existing deposits and new discoveries in the area.

About Mosaic Minerals Corporation

Mosaic Minerals Corp., founded in 2018,is a Canadian mineral exploration company focused on
unlocking the potential of former Stellar AfricaGold Inc. “Stellar” Opawica Gold Project (“Opawica”)
which is located in Québec’s renowned and very prolific Chibougamau mining district, Nord-duQuébec, within the famous Abitibi Greenstone Belt.

Mosaic is gold-focused concentrating its exploration efforts where the Company’s growth potential is
the strongest. After incorporation Mosaic acquired Stellar’s Opawica project in a 100% share deal.

Mosaic then completed a Plan of Arrangement with Stellar establishing a shareholder base of more
than 1,000 new Mosaic shareholders. Since the acquisition Mosaic has actively explored Opawica
completing its Phase I exploration program at the end of 2019 with results that warrant advancing
with a Phase II program.

The technical content of this press release has been reviewed and approved by Éric Allard, an
independent consultant and a Qualified Person as defined in NI 43-101.

On Behalf of the Board
Maurice Giroux BSc
President & CEO
Contact:Maurice Giroux at 1-514-952-5709