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Riverside Resources Expands Ariel Copper Project with Acquisition of Adjacent Maria Luisa Copper Property, Sonora, Mexico

Mergers & Acquisitions Property Options & Staking

Riverside Resources Expands Ariel Copper

Project with Acquisition of Adjacent Maria

Luisa Copper Property, Sonora, Mexico

Vancouver, British Columbia--(Newsfile Corp. - June 17, 2024) -

Riverside Resources Inc.

(TSXV:

RRI) (OTCQB: RVSDF) (FSE: 5YY)

("Riverside" or the "Company"),

is pleased to announce it has

completed acquisition and title transfer of the Maria Luisa Copper Property immediately north of

Riverside's Ariel Property thus consolidating another 30% and direct drill target for the full Ariel project.

With this acquisition Riverside has now fully consolidated the highly prospective Laramide age porphyry

Cu-(Au, Mo) district and now controls an area of 16 sq km.

The Ariel project has had mineral exploration

by Riverside including mapping, sampling, geochemistry, mineral chemistry, remote sensing,

geophysical interpretations and is fully permitted for drilling. It represents a turnkey, undrilled, high quality

drill target 18 kms immediately east and within sight of Mexico's 2

nd

largest copper mine, the La

Caridad Copper Mining Complex, operated for the past 40 years by Grupo Mexico Mining.

Please click the following link for a brief video summary of this news, the positive impact and opportunity

for Riverside provided by John-Mark Staude, President and CEO:

https://rivres.com/media-

center/ceo-interviews-presentations

Concessions and Transaction

The Ariel project is now consolidated into five concessions that in total cover an area of 1,640 hectares

(16 sq km).

CONCESSION

OWNER

TITLE

HAS

VALIDITY

ARIEL

RRM Exploracion

SAPI de CV

245325

1,241.98

23/11/2016

22/11/2066

MARIA LUISA

RRM Exploracion

SAPI de CV

237383

100.00

09/12/2010

08/12/2060

MARIA LUISA

RRM Exploracion

SAPI de CV

237384

99.49

09/12/2010

08/12/2060

MARIA LUISA

RRM Exploracion

SAPI de CV

237385

99.63

09/12/2010

08/12/2060

MARIA LUISA

RRM Exploracion

SAPI de CV

237386

99.63

09/12/2010

08/12/2060

The transaction to acquire the Maria Luisa Copper Property was finalized this quarter.and has now been

officially registered

with the Mexican Direction of Mines and titles transferred to Riverside. The title

registration was completed in May 2024 under Riverside SAPI, the company based in Mexico as now

the full title holder of the Maria Luisa concessions. Riverside resolved outstanding tax issues for the

previously private owner, completed required filings and then reimbursed the property owner minus

those costs with a total payment of USD$200,000 with no royalty or retained interest, giving Riverside

100% control. All concessions are now in good standing with data available.

The Company has now also

completed the updating of the drill permitting to cover both the Maria Luisa and Ariel drill targets with drill

permit in hand which sets up Riverside for a strong H2 2024 for this property. The mineral title map is

shown below with the acquired tenures, the color loops indicate favorable target criteria which are now

able to be drill tested.

Figure 1

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6101/213254_e9fd2717e4796bbc_002full.jpg

Riverside's President and CEO, John-Mark Staude, stated: "We are delighted to consolidate Maria

Luisa into the larger Ariel project as this has been a goal for several years and was able to be completed

on highly favorable terms for Riverside. This

now provides the

opportunity to move forward with drilling at

both Ariel and Maria Luisa.

Riverside will look to partner this large, fully titled, easily accessible and

proximal to La Caridad copper mine location.

We appreciate the excellent work of the Riverside local

Mexico exploration team who worked with lawyers and private owners to complete this for the benefit of

all stakeholders."

Ariel Project:

The Ariel Project is strategically located within sight of the world-class La Caridad Cu-Mo porphyry mine

operation (~10 Mt of Cu metal reserves), and 24 km SE of the Los Alisos Cu porphyry prospect. The

property has seen relatively little if any drill testing and has extensive exposed and under shallow post-

mineral cover targets. The project, originally staked by Riverside in late 2015 and then titled in 2016, was

developed out of a strong reconnaissance regional prospecting program in the area when Riverside was

working in partnership with Antofagasta Mining. Access to the property is good being less than 30 km on

dirt roads from paved highways, some of which are used for servicing the nearby La Caridad mine and

mill complex operated by Grupo Mexico Mining.

Figure 2

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6101/213254_e9fd2717e4796bbc_003full.jpg

Exploration Results

The Ariel project's exploration results have included high-grade copper findings and strong geochemical

vectors. Positive field exploration, along with the integration of regional geophysics, has led to the

definition of two high-quality target areas: Ariel and Maria Luisa. The copper system is dated as

Laramide age and is part of the major Arizona-Sonora copper belt which has over 10 mines of large

copper operation, and significant new copper discoveries coming along currently as well.

The geologic

mapping, alteration analysis and sampling has helped focus targeting toward high priority drill

exploration targets which have been permitted and title in hand for Riverside. The project stands out for

its color anomaly aligning with favorable geology caused from oxidizing of outcropping pyritic sulfide

system with quartz-sericite alteration and porphyry Cu-style veining stockworks.

Extensive rock samples have been geochemically analyzed using certified assay laboratory and

portable X-ray fluorescence instrument as well as a mineral analyzer that employs near infra-red

spectrometry to identify minerals typically formed by hydrothermal processes. This sampling delineates

two large primary porphyry targets (Ariel and Maria Luisa Targets) as shown on the map and please see

the website for more extensive information and cross sections.

Geology

The Ariel Project comprises an eastward-tilted sequence of Late Cretaceous andesitic to rhyolitic rocks

of the Tarahumara Formation intruded by Paleocene (ca. 57 Ma) quartz monzonite and granodioritic

porphyries comparable to the age of the La Caridad Porphyry main mineralization event. Post-mineral

Miocene regional tectonic events caused down-faulted blocks to the west, where basalt and

conglomerate cover from the Baucarit Formation developed.

This covers the targets with post mineral

units similar to those found in the Cananea and Caridad districts as well as extensively northward in

Arizona.

Surface expression of porphyry copper potential includes:

Feeder veins:

Quartz-bearing structures that served as conduits to mineralizing fluids. Possible

vectors toward concealed source. The veins walls display visible amounts of advanced-argillic

alteration and sulfosalts and are targets for gold-bearing deposits.

Dickite-Alunite angular breccias:

Correspond to coarse-grained (>2 mm), monomictic breccia

with angular fragments of volcanic rocks highly altered to dickite and alunite. These breccias are

interpreted as hydraulic to phreatic breccias with a dominant high-sulphidation component and

directly linked to a concealed porphyry target.

Sericite-Pyrite pebble breccias:

Correspond to pebble-size (>20 cm), polymictic breccia with

milled fragments of porphyritic rocks.

The clasts display porphyry-style stockwork of quartz-jarosite.

The breccia matrix is composed of rock flour and juvenile fragments. This constitutes one strong

evidence of porphyry copper system activity.

The Ariel project, now including the

Maria Luisa concessions,

now presents two major targets that can

be easily accessed and drilled. This project is within view of the giant copper mine at La Caridad and

has similar geology and geochemical indicators. where Riverside looks to now partner following its

Prospect Generator business approach.

Corporate News

Riverside is delighted to welcome Bryan Wilson join the board of directors. He was elected at the Annual

Shareholders Meeting on May 10, 2024.

Mr. Wilson brings extensive knowledge of mineral exploration

and mining, having recently worked in Mexico, as CEO for Angel Wing Metals Inc. and previously

Director of Exploration Business Development with Centerra Gold at the Toronto corporate

headquarters. In addition to these achievements, Mr. Wilson has worked throughout Canada and is

familiar with 100's of Canadian mining camps, reflecting his over 40 years of mining industry expertise.

Mr.Wilson has been a technical advisor to Riverside and now moves into the role as Director.

Qualified Person:

This news release was reviewed and approved by Julian Manco, P.Geo., a non-independent qualified

person to Riverside Resources, who is responsible for ensuring that the geologic information provided

within this news release is accurate and who acts as a "qualified person" under National Instrument 43-

101 Standards of Disclosure for Mineral Projects.

About Riverside Resources Inc.:

Riverside is a well-funded exploration company driven by value generation and discovery. The Company

has over $5M in cash, no debt and less than 75M shares outstanding with a strong portfolio of gold-silver

and copper assets and royalties in North America. Riverside has extensive experience and knowledge

operating in Mexico and Canada and leverages its large database to generate a portfolio of prospective

mineral properties. In addition to Riverside's own exploration spending, the Company also strives to

diversify risk by securing joint-venture and spin-out partnerships to advance multiple assets

simultaneously and create more chances for discovery. Riverside has properties available for option,

with information available on the Company's website at

www.rivres.com

.

ON BEHALF OF RIVERSIDE RESOURCES INC.

"John-Mark Staude"

Dr. John-Mark Staude, President & CEO

For additional information contact:

John-Mark Staude

President, CEO

Riverside Resources Inc.

[email protected]

Phone:

(778) 327-6671

Fax:

(778) 327-6675

Web:

www.rivres.com

Mehran Bagherzadeh

Corporate Communications

Riverside Resources Inc.

Phone: (778) 327-6671

TF: (877) RIV-RES1

Web:

www.rivres.com

Certain statements in this press release may be considered forward-looking information. These

statements can be identified by the use of forward-looking terminology (e.g., "expect"," estimates",

"intends", "anticipates", "believes", "plans"). Such information involves known and unknown risks --

including the availability of funds, the results of financing and exploration activities, the interpretation

of exploration results and other geological data, or unanticipated costs and expenses and other risks

identified by Riverside in its public securities filings that may cause actual events to differ materially

from current expectations. Readers are cautioned not to place undue reliance on these forward-

looking statements, which speak only as of the date of this press release.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this

release.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/213254