Orosur Mining Inc - Lithium JV, Nigeria
Orosur Mining Inc - Lithium JV, Nigeria
• First results from mapping and sampling program on first licence.
• Abundant pegmatites evident, with LiO2 results in excess of 2%,
analysed by way of XRF and LIBS.
• Two additional licences confirmed, expanding land position in the
key Lithium districts to 533km2.
London, November 28th 2023. Orosur Mining Inc. ("Orosur" or the
"Company") (TSXV/AIM:OMI), is pleased to provide an update on
exploration progress at its new Lithium West Joint Venture ("the Project) in
Nigeria,.
Details
As announced on Oct 16th 2023, the Company has entered into a Joint
Venture ("JV") with Nigerian company Jurassic Mines Ltd ("Jurassic"),
whereby Orosur, via a new 100% owned UK subsidiary, Lithium West
Limited ("Lithium West"), may earn up to 70% equity in the Project by
spending US$5m over 5 years in two phases:
1. Phase 1 - Lithium West can earn 51% equity in the Project by
spending a total of US$3m over a maximum of three years.
2. Phase 2 - Lithium West can earn an additional 19% equity in the
Project, up to a total of 70%, by spending an additional US$2m over
a maximum of two years.
Results
Immediately upon signing of the JV, the Company's exploration teams
mobilised to site to begin preliminary reconnaissance mapping and
sampling, beginning on the western most Exploration Licence EL
43953. The decision to commence on EL 43953 was taken purely for
logistical reasons, with no consideration of prospectivity.
The objective of the program was to undertake preliminary geological
mapping of the licence, in order to confirm the regional interpretation and
prospectivity assessment that had led to its selection and to take a number
of samples for assay with a view to planning further work.
Several hundred samples of various outcrops were taken, with
approximately 70 then being analysed by way of XRF and LIBS for lithium
content as well as a number of other pathfinder elements.
XRF/LIBS are not as accurate as laboratory chemical assay, but as no
certified geochemical laboratory yet exists in Nigeria, XRF/LIBS provide a
faster, cheaper and sufficiently accurate alternative for the purpose at
hand.
Geological mapping quickly identified that the licence hosted numerous
swarms of potentially lithium bearing pegmatites, consistent with granitic
and gneissic lithologies and the major country scale "schist belt" structures,
that had been postulated as the primary controlling structures.
Mapped pegmatite system were noted over substantial strike lengths of
several km's and of varying widths from sub metre, to over 30m in one
massive example.
The primary analysis of interest was for elemental lithium, with secondary
focus on the ratio of potassium ("K") to rubidium ("Rb") as the K/Rb ratio is
a key indicator of the degree to which a granitic or gneissic body has
undergone fractionation that may have led to the late-stage development of
pegmatites. A K/Rb ratio of less than 100 is considered prospective, with
less than 50 being highly prospective.
Numerous pegmatite samples returned high levels of lithium, with several
over 2% LiO2, with substantial areas demonstrating K/Rb ratios of less
than 100 and several locations of less than 50 suggesting very high levels
of fractionation.
This work program, while preliminary in nature, has demonstrated this first
licence to be highly prospective for the presence of lithium bearing
pegmatites and thus worthy of follow up.
Crews have since moved east to the other licences in the package and it is
anticipated that results from this work will be available in coming weeks.
In the meantime, follow-up soil sampling programs over EL 43953 are
being planned and it is hoped these will commence in the near term once
the other licences have been assessed.
Figure 1 - Li and K/Rb
New Licences
As previously noted, the JV commenced with four exploration licences, for
a total of 323km2, with more licences being examined with a view to being
secured and included in the JV.
The Company is pleased to announce that two additional licences have
now been confirmed, taking the total area of prospective land under title to
533km2, representing one of the most dominant land positions in Nigeria.
While the total land area within the JV has increased, the new licences are
included within the original terms of the JV agreement and thus no
additional expenditure is required.
Figure 2 - Licences
The Company continues to assess new licences and opportunities and it is
hoped this land position may be added to in the medium term.
Orosur CEO Brad George commented:
"These outstanding results from our first field program in Nigeria are exciting
but not surprising. We pegged these licences with a very clear
understanding of the geological processes in play and so we expected to find
lithium. To then confirm this confidence and to find so many lithium bearing
pegmatites, some extremely thick, is ver y positive and bodes well for work
on the next 5 licences that is underway now."
For further information, visit www.orosur.ca , follow on twitter @orosurm or contact:
Orosur Mining Inc.
Louis Castro, Chairman,
Brad George, CEO
Tel: +1 (778) 373-0100
SP Angel Corporate Finance LLP - Nomad & Joint Broker
Jeff Keating / Kasia Brzozowska
Tel: +44 (0) 20 3 470 0470
Turner Pope Investments (TPI) Ltd - Joint Broker
Andy Thacker/James Pope
Tel: +44 (0)20 3657 0050
Flagstaff Communications and Investor Communications
Tim Thompson
Mark Edwards
Fergus Mellon
Tel: +44 (0)207 129 1474
The information contained within this announcement is deemed by the Company to constitute inside
information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ('MAR') which has been
incorporated into UK law by the European Union (Withdrawa l) Act 2018. Upon the publication of this
announcement via Regulatory Information Service ('RIS'), this inside information is now considered to be in the
public domain.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
About Orosur Mining Inc.
Orosur Mining Inc. (TSX: OMI; AIM: OMI) is a minerals explorer and developer focused on identifying and
advancing projects in Colombia, Argentina, Nigeria and Brazil.
Qualified Persons Statement
The information in this news release was compiled, reviewed and verified by Mr. Brad George, BSc Hons (Geology
and Geophysics), MBA, Member of the Australian Institute of Geoscientists (MAIG), CEO of Orosur Mining Inc.
and a qualified person as defined by National Instrument 43-101.
Orosur Mining staff and con tractors follow standard operating and quality assurance procedures to ensure that
sampling techniques and sample results meet international reporting standards.
Results contained in this announcement relate to reconnaissance mapping and rock chip sampling. Rock samples
were taken at locations of outcrop of fresh or weathered material with several samples being taken at each outcrop
so as to provide a more representative sample. Samples were not taken on a regular grid and so some sampling
bias will be present.
Representative samples varied in size from 500g to 2kg in mass. Collected representative samples were bagged
and labelled, before being transported to a preparation facility in Abuja for crushing, pulverising and
homogenisation.
Small 10g sub samples were then taken to be formed into assay pellets with a 30T hydraulic press. Pellets were
then then analysed with both XRF and LIBS analysers.
Both XRF and LIBS analysers are calibrated on a weekly basis via the use of CRMs.
Forward Looking Statements
All statements, other than statements of historical fact, contained in this news release constitute "forward looking
statements" within the meaning of applicable securities laws, including but not limited to the "safe harbour"
provisions of t he United States Private Securities Litigation Reform Act of 1995 and are based on expectations
estimates and projections as of the date of this news release.
Forward-looking statements include, without limitation, the exploration plans in Colombia and the funding from
Monte Águila of those plans, Monte Águila´s decision to continue with the Exploration Agreement, the formation of
a new mining company or mining venture to hold the project, the ability for Loryser to implement the Creditor´s
Agreement successfully in Uruguay and other events or conditions that may occur in the future. The Company's
continuance as a going concern is dependent upon its ability to obtain adequate financing, to reach profitable levels
of operations and to reach a satisfactory implementation of the Creditor´s Agreement in Uruguay. These material
uncertainties may cast significant doubt upon the Company's ability to realize its assets and discharge its liabilities
in the normal course of business and accordingly the appropriateness of the use of accounting principles applicable
to a going concern. There can be no assurance that such statements will prove to be accurate. Actual results and
future events could differ materially from those anticipated in such forward -looking statements. Such statements
are subject to significant risks and uncertainties including, but not limited, those as described in Section "Risks
Factors" of the MDA and the Annual Information Form. The Company disclaims any intention or obligation to update
or revise any forward-looking statements whether as a result of new information, future events and such forward -
looking statements, except to the extent required by applicable law.