Spark encounters 3,712 ppm lithium at Cruzeta and 118 ppm at Água Branca and advances drill planning in Brazil's Lithium Valley

VANCOUVER, BC / June 20, 2025 / IRW-Press / Spark Energy Minerals Inc. ("Spark" or the "Company") (CSE: SPRK) (OTC: SPARF) (FWB: 8PC) is pleased to provide an update on ongoing exploration work at its flagship Arapaima project in Brazil's Lithium Valley.

Positive assay results from 16 rock chip and 46 stream sediment samples recently received from SGS Laboratories in Belo Horizonte reinforce Spark Energy's focus on advancing its three priority lithium targets—Cruzeta, Água Branca, and Grota do Maquém—toward diamond core drilling in the third quarter of 2025. The company is also advancing its emerging REE target at Caladão.

Figure 1. Location of Spark Energy Minerals' Arapaima project concession areas in Brazil's Lithium Valley relative to competitors' areas (left) and the location of the Company's priority lithium and REE targets (right).

"These results further confirm the strong lithium potential of our Arapaima project," commented Eugene Hodgson, CEO of Spark. "The 3,712 ppm lithium in-rock result at Cruzeta is our highest to date and is supported by key indicator elements indicating developed LCT pegmatites. The 118 ppm lithium we detected in stream sediments at Água Branca underscores the district-wide opportunities.

With diamond core drilling planned for Q3 2025, we are accelerating the refinement of targets. Brazil's Lithium Valley is rapidly becoming a globally significant critical minerals area, and Spark is well positioned to be at the forefront of this discovery phase."

Rock chip results from the Cruzeta target

Spark Energy reports encouraging results for 16 reconnaissance rock chip samples collected from pegmatite outcrops at the newly identified Cruzeta target, which returned highly anomalous lithium values ​​(peaking at 3,712 ppm lithium). This is the highest single lithium value from a rock chip sample reported since the initiation of the field program in November 2024. Readers are cautioned that the rock chip samples are selective in nature and may not reflect the true grade or extent of mineralization on the property.

The pegmatites at Cruzeta also exhibit highly anomalous values ​​of tin (peak of 372 ppm Sn), niobium (peak of 559 ppm Nb), tantalum (peak of 87 ppm Ta), gallium (peak of 158 ppm Ga), scandium (peak of 83 ppm Sc), cesium (peak of 267 ppm Cs), and beryllium (peak of 8 ppm Be). Importantly, the samples have a potassium/rubidium (K/Rb) ratio of only 13, indicating highly developed LCT pegmatites typically associated with lithium prospectivity.*

*The K/Rb ratio is an established geochemical indicator used to identify and prioritize fractionated pegmatites with high lithium potential. Ratios below 150 are considered particularly favorable.

Table 1. Analytical results for lithium and key tracer elements and potassium/rubidium (K/Rb) ratios of the 16 recently reported rock chip samples from Cruzeta.

Figure 2. Location of highly anomalous rock chip samples within Spark's priority Cruzeta target.

Target Água Branca - River sediment sampling results

Stream sediment results from the priority Água Branca target continue to be encouraging, with a peak grade of 118 ppm lithium in a sub-basin. This result is consistent with previously reported anomalous grades and underscores the overall prospectivity of the area (see NI 43-101 compliant technical report at https://www.sedarplus.ca/).

Readers are cautioned that the stream sediment sampling results are preliminary and part of an early-stage exploration program. These results do not constitute conclusive evidence of the likelihood of a mineral deposit, nor do they guarantee future discoveries.

Figure 3. Location of recent lithium (118 ppm Li) and tracer element anomalies in stream sediments from a sub-catchment within Spark's Água Branca priority target area.

Table 2. Tabular listing of lithium and indicator element analysis results for the 46 river sediment samples. All samples were submitted for analysis to the SGS Geosol Laboratories facility in Belo Horizonte, Brazil. The samples were prepared and analyzed using the ICP-MS method after melting with lithium borate. Typical sample weights ranged from 0.5 to 1.0 kg. SGS is an independent, ISO/IEC 17025-certified laboratory with no known affiliation with Spark Energy Minerals.

Progress towards diamond core drilling in the third quarter

Spark's geological team is currently focused on the detailed mapping and sampling required to refine diamond core drilling targets within the three priority target areas currently in the Company's portfolio.

Granting of options

Spark Energy Minerals is also pleased to announce that it has granted a total of 500,000 stock options (the "Options") to certain officers and consultants of the Company. The grant includes 300,000 Options to insiders of the Company. Each Option is exercisable to purchase one common share of the Company at a price of $0.10 for a period of two years from the date of issuance. The Options are immediately exercisable and subject to a statutory hold period of four months plus one day.

Qualified expert:

The scientific and technical information in this document has been reviewed and approved by Jonathan Victor Hill, BSc Hons, FAUSIMM, a Qualified Person (QP) as defined by NI 43-101 and a director of Spark Energy Minerals Inc. Mr. Hill is a director of Spark Energy Minerals and therefore not independent of the Company.

About Spark Energy Minerals Inc.

Spark Energy Minerals, Inc. is a Canadian company engaged in the acquisition, exploration, and development of battery metal and mineral properties, with a particular focus on its extensive holdings in Brazil. The company's flagship project is the Arapaima Lithium and REE Project, which covers a combined 91,900 hectares in Brazil's renowned Lithium Valley, one of the world's most prolific mining regions. This region is gaining increasing global recognition for its vast lithium and rare earth deposits, positioning Brazil as a key player in the global energy transition.

Neither the Canadian Securities Exchange nor its regulatory authorities (as that term is defined in the policies of the Canadian Securities Exchange) accept responsibility for the adequacy or accuracy of this release.

Further information can be found on the company’s website at

https://sparkenergyminerals.co

Email [email protected]

Contact: Eugene Hodgson, CEO, Tel. +1-778-744-0742

Disclaimer regarding forward-looking statements

Certain statements contained in this press release may constitute "forward-looking statements" or "forward-looking information" (collectively, "forward-looking information") within the meaning of the Private Securities Litigation Reform Act of 1995 and similar Canadian legislation. These statements relate to future events or future performance. The use of the words "may," "intend," "expect," "believe," "will," "projected," "estimated," "anticipates," and similar expressions, as well as statements relating to matters that are not historical facts, are intended to identify forward-looking information and are based on the Company's current beliefs or assumptions as to the outcome and timing of such future events. Actual future results could differ materially. In particular, this press release contains forward-looking information with respect to the Company's business, property, financing, and certain corporate changes. Furthermore, it should be noted that rock, soil, and stream sediment samples are inherently selective and may not represent the true underlying mineralization. The forward-looking information in this news release is made as of the date hereof, and the Company undertakes no obligation to update or revise any forward-looking information, whether as a result of new information, future events, or otherwise, except as required by applicable securities laws.

The original language (usually English) in which the original text is published is the official, authorized, and legally binding version. This translation is provided for ease of understanding. The German version may be shortened or summarized. No responsibility or liability is assumed for the content, correctness, adequacy, or accuracy of this translation. From the translator's perspective, this release does not constitute a recommendation to buy or sell! Please refer to the original English release at www.sedarplus.ca, www.sec.gov, www.asx.com.au/, or on the company's website.

NEWSLETTER REGISTRATION: