Saturday, September 26, 2026
MiningNewsTerminal
Saturday, September 26, 2026 Admin

SMN.V ·

San Marco Continues to Discover High Grade Mineralization at Chunibas; Samples 6.41 % Copper and 27.3 g/t Silver

Drill Results Sampling & Geoscience Results

San Marco Continues to Discover High Grade Mineralization at Chunibas;

Samples 6.41 % Copper and 27.3 g/t Silver

Vancouver, B.C. – January 16th, 2018: San Marco Resources Inc. (SMN: TSX-V) ("San

Marco" or “the Company”) announces further assay results from continuing fieldwork at

Chunibas. As disclosed in the Company’s news release dated January 10th, 2018, newly

discovered copper and silver mineralization at the Company’s 100% owned Chunibas property

has been located over an area of approximately 1.2 kilometres of strike and at least 100 metres

of width. That zone has now been extended to 1.7 kilometres of strike and up to 150 metres of

width, and open in all directions.

Recent surface work included 38 rock chip samples, of which 26% assayed greater than 1%

copper and 50% greater than 0.2 % copper. Highlights of the recent 38 assay results are:

Sample number Cu (%) Ag (g/t)

366587 0.75 4.8

366588 1.28 13.7

366589 2.62 26.3

366590 1.29 5.83

366591 1.82 29.8

366592 1.52 10.9

366596 3.95 32.8

366597 6.41 27.3

366601 2.13 7.2

366606 1.59 10.8

366608 0.58 3.6

366610 1.06 5.1

366612 0.87 1.9

An initial petrographic study has identified bornite, chalcocite, covellite and idaite as the primary

copper minerals which appear associated with hydrothermal alteration. Microscopic textural

features indicate that chalcocite, covellite and idaite are replacing bornite. The nature of the

replacement could be a late hydrothermal event or supergene. The dominant alteration

assemblage is represented by Iron – epidote -> chlorite > quartz > calcite.

2

The andesitic host rocks of presumed Larimide age have undergone hydrothermal alteration,

represented by patches, cavity filling and microbrecciation.

Additional and pending exploration on the Chunibas property includes:

• Continuous rock chip channel sampling over outcrops is underway.

• Follow-up more detailed petrographic studies to be initiated.

• A trenching program between individual outcrops is being evaluated. Success of this

program will depend on the depth of cover between outcrops.

• Induced Polarization (I.P.), as well as ground magnetic surveys are being considered to

help define the boundaries of the system.

For related images, please visit the Chunibas Project on the Company’s website.

About San Marco

San Marco Resources Inc. is a Canadian mineral ex ploration company with a portfolio of

promising projects in mining-friendly Mexico, including the Chunibas, Mariana and 1068

Projects in Sonora State.

San Marco actively pursues strategic project generation program focused on high -caliber, low

acquisition cost opportunities in northwestern Mexico. The Company has a committed

management team with extensive experience in Mexico and a proven track record of building

shareholder value. San Marco currently has 64,716,276 issued and outstanding shares.

On behalf of the Board of Directors:

Robert Willis, P. Eng.

President & CEO

For further information, contact:

Nancy Curry

[email protected]

National Instrument 43-101 Disclosure

This news release has been approved by San Marco's CEO, Robert D. Willis, P. Eng. a "Qualified

Person" as defined in National Instrument 43-101, Standards of Disclosure for Mineral Projects of the

Canadian Securities Administrators. He has verified the data disclosed, including sampling, analytical and

test data, underlying such technical information by reviewing the assay reports provided to San Marco by

its independent testing laboratory.

The Company has implemented quality assurance (“QA”) and quality control (“QC”) programs to ensure

sampling and analysis of all exploration work is conducted in accordance with the best possible practices.

All sampling programs are carried out in a careful and diligent manner using scientifically established

sampling practices designed and tested to ensure that the results are representative and reliable. Quality

control programs appropriate to the type of sample and the mineralization are implemente d, including

such measures as external blanks, standards and duplicate samples. The security of samples from

sample acquisition to analysis is a vital component of the sampling process. Procedures include the use

of secure core logging, sampling, storage and preparation facilities as appropriate and the prompt, secure

and direct shipping of samples to the laboratories. Appropriate sample security procedures are employed

given the geographic and topographic conditions and the logistics created by the site location.

3

Forward Looking Information

Information set forth in this document may include forward-looking statements. While these statements

reflect management's current plans, projections and intents, by their nature, forward-looking statements

are subject to numerous risks and uncertainties, some of which are beyond the control of San Marco.

Readers are cautioned that the assumptions used in the preparation of such information, although

considered reasonable at the time of preparation, may prove to be impre cise and, as such, undue

reliance should not be placed on these forward-looking statements. San Marco's actual results, programs,

activities and financial position could differ materially from those expressed in or implied by these forward-

looking statements.

Neither the TSX Venture Exchange nor the Investment Industry Regulatory Organization of Canada

accepts responsibility for the adequacy or accuracy of this release.