Roberto Resources Inc.: Roberto Resources Reports Assay Results from Field Exploration Program

Vancouver, British Columbia--(Newsfile Corp. - April 24, 2025) - ROBERTO RESOURCES INC. (CSE: RBTO)("Roberto" or "the Company"), is pleased to announce that it completed its first phase exploration program on its Janampalla Property, located in Perú. The exploration program involved a rock-chip and soil sampling program, preparatory work for a petrographic study and detailed geological mapping.

The rock-chip and soil sampling program focused on the Terrinas, Viscacheros, Moises and Pamella veins and historical mines in the southern part of Janampalla concessions.

A total of 170 rock-chip vein and float samples were collected from multiple vein systems (Table 1). Of these, 43 samples assayed above 0.5% Cu, 35 assayed above 1% Cu including five samples above 10% Cu. A number of samples were anomalous in silver and lead with higher silver values generally correlating with higher lead values. The higher grade silver-lead assays included 65 g/t Ag and 4.37 % Pb, 25 g/t Ag and 1.12 % Pb, and 35 g/t Ag and 1.47 % Pb. These samples demonstrate the potential for the vein systems at the Project to host high grade copper mineralization with significant silver and lead co-mineralization. A summary of the material results are set forth in Table 1 below.

A total of 61 soil samples were taken at 15 m spacing along 4 orientation lines across the Terrinas, Viscacheros and Moises veins. Samples were taken from the lower B to upper C horizon. Eleven soil samples assayed between 0.006% to 0.078% Cu, with the remainder all below detection. The low tenor of assay results most likely reflects the fact that soils at the project are thin and poorly developed, reflecting limited chemical weathering and elemental distribution. In contrast, rock chip sampling has proven to be a very effective exploration technique.

The Company had initially planned to take approximately 400 rock chip samples and 250 soil samples. However, field geologists concluded that 170 rock-chip samples were sufficient to provide representative sampling coverage of the southern part of the field area, and in this respect met the objectives of this phase of the exploration program. Ten samples have been submitted for petrographic study.

The Company also redirected capital expenditures from the sampling program to acquire 16 band VNIR + SWIR high resolution satellite imagery across the project area, for the purpose of alteration mapping during the next exploration phase.

Figure 1: Geological map showing project areas and typical assay results at the Terrinas, Viscacheros and Moises prospects.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10814/249611_figure1.jpg

Quality Assurance and Quality Contract

Samples were submitted to Alfred H Knight (AHK) assay laboratory in Lima, Perú for gold analysis by 50 g fire assay with AAS finish and for multi-element ICP analysis following a 4-acid digest. AHK is a fully ISO and UKAS accredited and certified assay laboratory who is independent of Roberto.

Table 1: Summary of rock chip assay results

Sample No	Au (ppm)	Ag (ppm)	Cu (%)	Pb (%)	Zn (%)
JAN00102	< 0.01	< 0.6	1.63	0.002	0.002
JAN00103	0.01	3.1	2.52	0.001	0.003
JAN00104	0.01	1.1	0.204	0.002	0.001
JAN00105	0.03	7.7	3.66	0.001	0.005
JAN00106	0.01	2	0.382	0.002	0.001
JAN00107	0.01	3.3	0.821	0.001	0.002
JAN00108	< 0.01	1.8	0.601	< 0.001	0.001
JAN00109	< 0.01	0.8	0.807	< 0.001	0.003
JAN00110	0.01	2.3	0.222	0.001	0.001
JAN00111	0.02	5.2	0.523	< 0.001	0.002
JAN00113	0.01	1.9	0.444	< 0.001	0.001
JAN00114	< 0.01	< 0.6	1.04	0.004	0.004
JAN00117	< 0.01	3.1	1.24	0.001	0.002
JAN00118	< 0.01	4.3	1.67	0.001	0.002
JAN00119	< 0.01	2.9	1.14	0.001	0.002
JAN00122	< 0.01	3.1	1.13	< 0.001	0.002
JAN00123	1.37	9.8	5.87	0.006	0.012
JAN00124	0.74	12.1	4.54	0.002	0.002
JAN00125	0.01	< 0.6	8.33	0.001	0.004
JAN00126	0.02	< 0.6	4.14	0.001	0.001
JAN00127	0.18	8.4	8.14	< 0.001	0.003
JAN00129	< 0.01	1.2	0.503	0.003	0.004
JAN00130	0.02	16.1	> 10.000	0.003	0.012
JAN00131	0.06	17.9	> 10.000	0.005	0.013
JAN00132	0.03	13.8	> 10.000	0.002	0.009
JAN00133	< 0.01	0.7	0.734	0.002	0.004
JAN00134	< 0.01	1.3	1.43	0.002	0.006
JAN00135	< 0.01	< 0.6	0.519	0.002	0.002
JAN00136	< 0.01	< 0.6	0.276	0.002	0.002
JAN00138	0.01	< 0.6	1.67	0.002	0.006
JAN00139	< 0.01	< 0.6	0.103	0.002	0.003
JAN00140	0.02	3.1	3.92	0.002	0.005
JAN00141	< 0.01	< 0.6	0.157	0.002	0.003
JAN00142	0.01	1.2	1.54	0.002	0.002
JAN00143	0.01	1.8	2.05	0.002	0.003
JAN00144	< 0.01	0.9	1.01	0.002	0.003
JAN00145	< 0.01	5.9	0.402	0.44	0.018
JAN00146	< 0.01	5.7	1.03	0.335	0.028
JAN00147	< 0.01	16.6	1.49	0.162	0.088
JAN00148	< 0.01	18.2	1.73	0.268	0.117
JAN00149	< 0.01	24.2	2.05	0.139	0.147
JAN00150	0.01	19.1	1.38	0.516	0.104
JAN00151	0.06	2.1	> 10.000	0.002	0.006
JAN00152	0.03	1.4	4.44	0.001	0.005
JAN00153	0.03	1.8	9.44	< 0.001	0.003
JAN00154	0.07	4.1	> 10.000	0.001	0.003
JAN00155	0.02	0.9	9.44	< 0.001	0.006
JAN00156	< 0.01	< 0.6	0.981	0.002	0.006
JAN00157	< 0.01	< 0.6	0.697	0.002	0.003
JAN00158	< 0.01	0.9	1.52	0.002	0.002
JAN00159	< 0.01	< 0.6	0.802	0.002	0.002
JAN00160	0.02	1.6	2.61	0.002	0.003
JAN00161	< 0.01	8.9	0.539	0.138	0.008
JAN00162	0.01	25.4	0.906	1.12	0.023
JAN00163	0.01	65.2	1.03	4.37	0.076
JAN00164	< 0.01	35	1.13	1.47	0.034
JAN00165	< 0.01	19.9	1.43	0.525	0.033
JAN00166	0.02	1.9	4.23	0.045	0.047
JAN00167	0.02	1.5	5.32	0.019	0.031
JAN00168	< 0.01	1.5	3.42	0.019	0.029
JAN00169	< 0.01	1	1.16	0.001	0.005

Qualified Person

Dr. Christopher Wilson, Ph.D., FAusIMM (CP), FSEG, FGS, a Qualified Person under National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Roberto Resources Inc.

Roberto is engaged in the acquisition and exploration of its Janampalla Property, which is comprised of three exploration concessions for total area of 2,800 hectares and is located in the Huancavalica Province of Central Perú. Roberto currently holds an option to acquire a one hundred percent (100%) interest in the Janampalla Property. Roberto is focused on continuing exploration work that has indicated widespread, high-grade copper-gold mineralization hosted within Manto style veins and disseminations.

For more information please contact:

Todd Anthony
President & CEO
T: 604-416-1719
Email: [e-mail]

This news release includes certain statements that may be deemed "forward-looking statements", including statements respecting the services to be provided by Roberto. The use of any of the words "anticipate", "continue", "estimate", "expect", "may", "will", "would", "project", "should", "believe" and similar expressions are intended to identify forward looking statements. Although Roberto believes that the expectations and assumptions on which the forward-looking statements are based are reasonable, undue reliance should not be placed on the forward looking statements because Roberto can give no assurance that they will prove to be correct. Since forward-looking statements address future events and conditions, by their very nature they involve inherent risks and uncertainties. These statements speak only as of the date of this News Release. Actual results could differ materially from those currently anticipated due to a number of factors and risks including various risk factors discussed in Roberto's disclosure documents which can be found under Roberto's profile on www.sedarplus.ca.

Neither the Canadian Securities Exchange ("CSE") nor its Regulation Services Provider (as that term is defined in the policies of the CSE) accepts responsibility for the adequacy or accuracy of this news release.

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SOURCE: Roberto Resources Inc.