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Orosur Mining Inc Announces El Pantano, Argentina Update

03.05.2022  |  Accesswire
- Positive results from first soil sampling program at El Pantano
- Teams mobilised for short follow-up program.


LONDON, May 3, 2022 - Orosur Mining Inc. ("Orosur" or the "Company") (TSX-V/AIM:OMI), is pleased to announce that results from the first reconnaissance geochemical soil sampling program at the La Esfinge prospect at El Pantano have returned highly anomalous results in Gold and several other pathfinder elements, over a 3.3km strike length of the target, with moderate level anomalism over an additional 3.4km of the target.

Gold anomalism in soil samples have returned results in excess of 100ppb Au across the western half of the La Esfinge target, with highly significant anomalies from other elements such as Arsenic (As), Silver (Ag), Bismuth (Bi), Indium (In) and Copper (Cu) across the entire length of the target of almost 7km (figures 4 through 9).

Anomalism remains open to the west.

While widely spaced and preliminary in nature, these results are highly encouraging from a first pass program and are in accordance with the geochemical responses we would expect to see from an epithermal gold system in this environment.

As a result of these positive results, the Company's geological teams have returned to El Pantano to carry out a short in-fill program to better define the scale and nature of the key anomalies before the approaching winter. Due to time constraints associated with short days, this infill will concentrate on the western half of the target with the most anomalous gold values.

For the full PDF version of the announcement with Figures 1-9 included, please refer to:http://www.rns-pdf.londonstockexchange.com/rns/9803J_1-2022-5-2.pdf

El Pantano

The El Pantano Project is subject to an Exploration & Joint Venture ("JV") agreement ("Agreement") with private Argentinean company DESEADO DORADO S.A.S and its shareholders ("Deseado").

The general terms of the Agreement allow for the Company to earn 100% equity in the Project by investing US$3m over five years in two phases:

  • Phase 1, earn 51% by investing US$1m over an initial 3-year period.
  • Phase 2, move to 100% ownership by investing an additional US$2m over a subsequent 2-year period and granting Deseado a residual 2% net smelter return royalty on the Project.

Figure 1. Regional Location

Figure 2. Licences

Survey

As announced on March 21st, a reconnaissance geochemical program was planned at El Pantano as the first work phase of the JV.

Survey planning was focussed on the La Esfinge prospect, a roughly 7-8km long silicified ridge that showed geological characteristics potentially suggestive of a major epithermal system, but to the best of the Company's knowledge had never been sampled.

Nine geochemical survey lines were located along the target length, at approximately 1km spacing, with samples taken every 20m along these lines. The lines varied in length so as to extend well into the surrounding host rocks and thus provide background geochemical signatures that are required for the subsequent statistical analysis of results.

Samples were taken at depths varying from 30cm to 60cm beneath the surface, at what was deemed the local equivalent of a B Horizon, although this nomenclature is somewhat complicated in Patagonia as there is almost no vegetation and as a result, very little soil development. This zone was however seen to possess the required levels of clays and manganese and iron nodules and so act as a suitable collecting medium.

A total of 362 samples were taken, with these samples prepared at the local ALS preparation facility in Santa Cruz province, before final assay at the ALS laboratory in Lima Peru. Samples were assayed for gold and a large suite of other metals, some of which are known to act as pathfinder elements within the geological environment of the Deseado Massif gold province.

The line spacing was intentionally broad as the survey was designed as a first pass reconnaissance program to assess the appropriateness of the sampling method and medium, and to collect the necessary background data that would be required for analysis of results.

Unlike drilling or rock chip sampling, results from soil sampling cannot be assessed against an absolute, objective scale, but must instead be statistically analysed above the local background. What is deemed "anomalous" is entirely dependent upon the local conditions of the prospect.

Figure 3. Project satellite imagery

Results and Followup.

Geochemical results were statistically analysed on an element-by-element basis, with various levels of anomalism determined by the number of standard deviations above the mean.

Analysis has demonstrated widespread moderate gold anomalism across most of the western half of La Esfinge, with several key occurrences of high-level anomalism (>24ppb Au), with the highest value of 118ppb Au.

Gold anomalism was concentrated along the southern margin of the La Esfinge silicified ridge, most likely indicating a major structure along this margin that has allowed the less mobile element to migrate upwards. The highest gold values also coincide with the western half of the La Esfinge ridge, where the orientation of the ridge deviates closer to the SE-NW direction that is commonly the major structural control on gold mineralisation in this portion of the Deseado Massif.

Other pathfinder elements however show more widespread anomalism in both directions, which is to be expected as these elements, such as As, are more mobile and thus able to migrate more readily.

While extremely preliminary in nature, these results are a positive indicator of an epithermal system along a substantial strike length of almost 8km. Seeing the most widespread gold anomalism at the western end of the ridge may be suggestive of the system shallowing in this direction.

As a result, Company geological teams are remobilising to site to carry out a brief infill soil sampling program in the brief time permitted before the winter recess.

A number of additional soil sampling lines will be located across the western half of the La Esfinge ridge to infill the wide preliminary spacing and so better define the anomalies, and to extend coverage westward and southward where anomalism remains open. This work program is expected to require approximately two weeks, although actual duration will be dependent on weather conditions.

Figure 4. Gold in soils

Figure 5. Arsenic in soils

Figure 6. Silver in soils

Figure 7. Bismuth in soils

Figure 8. Indium in soils

Figure 9. Copper in soils

Orosur CEO Brad George commented:

"While preliminary and reconnaissance in nature, these positive results are highly encouraging from a first pass program on a virgin prospect. We targeted La Esfinge not only because of its positive geological indicators, but also its very large size. To now see geochemical anomalism along almost the entire 8km strike gives us much to work with moving forward."

For further information, please contact:

Orosur Mining Inc.
Louis Castro, Chairman,
Brad George, CEO
info@orosur.ca
Tel: +1 (778) 373-0100

SP Angel Corporate Finance LLP - Nomad & Joint Broker
Jeff Keating / Caroline Rowe
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 Strategic and Investor Communications
Tim Thompson
Mark Edwards
Fergus Mellon
Tel: +44 (0) 207 129 1474
orosur@flagstaffcomms.com

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 (Withdrawal) 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.

About Orosur Mining Inc.

Orosur Mining Inc. (TSX-V: OMI; AIM: OMI) is a minerals explorer and developer focused on identifying and advancing projects in South America. The Company currently operates in Colombia, Argentina, Brazil and Uruguay.

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 Ltd and a qualified person as defined by National Instrument 43-101.

Orosur Mining staff follow standard operating and quality assurance procedures to ensure that sampling techniques and sample results meet international reporting standards.

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 the 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 and Option agreement, the ability for Loryser to continue and finalize with the remediation in Uruguay, the ability to implement the Creditors' Agreement successfully as well as continuation of the business of the Company as a going concern 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.

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.

SOURCE: Orosur Mining Inc.

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