Indigo Engages Industry-Leading DLE Provider for Initial Lithium Brine Recovery Tests

Indigo Engages Industry-Leading DLE Provider for Initial Lithium Brine Recovery TestsJune 20,2023-Vancouver, British Columbia. IndigoExploration Inc.(the “Company”) (TSX-V: IXI, OTCQB: IXIXF,FSE: INEN) ispleased to announce the selection of Sunresin New Materials (“Sunresin”) to conductinitial Direct Lithium Extraction (“DLE”) recovery tests for the Company’s petro-lithium brines. Approximately 150 litres of brine will be collected from each project area, namely the Fox Creek East and Fox Creek West (collectively the “Fox Creek Project”), and shipped to Sunresin’s facilitieslocated in Xi’an, China, for recovery testsunder the supervision of Company representatives. Sunresin offers a proprietary, end-to-end solution for the processing of brine to finished products (lithium carbonate [Li2CO3]and lithium hydroxide [LiOH]) with over a decade of experience and successfully executed nine commercial DLE contractsrepresenting over 73,000 tonnes of lithium carbonate equivalent.Due to unforeseen scheduling conflicts with the various contractors, the Fox Creek sampling program is now scheduled to commence June26.“With significant investments made into the field of direct lithium extraction combined with the plethora of available off-the-shelf solutions in the marketplace, we are focusing our efforts on exploration and development without the added distraction of trying to reinvent a proprietary DLE solution” commented Paul Cowley, CEO and Director of Indigo Exploration. “Our in-house metallurgical advisory board has identified Sunresin as one of the leadingend-to-endEPC (engineering, procurement andconstruction) providersin the market. In order to deliver the most representative results from their DLE processand expedite the advancement of our project timelines, we will be using a sizable 300 litre sample of brine collected from the Fox Creek Project as opposed to a synthetic sample of a much smaller quantity. Our team believes this will provide us with the best quality, real-world data on the process and recovery characteristics.”About Sunresin New Materials Co., Ltd.SunresinNew Materials Co., Ltd. is a key player in the DLE (Direct Lithium Extraction) market, focusing on providing advanced solutions for lithium extraction and purification. They specialize in the development of high-performance ion exchange resins tailored for DLE applications. These resins efficiently extract lithium ions from brine or other sources, offering a sustainable and cost-effective alternative to traditional mining and evaporation methods. Sunresin's DLE resins are known for their outstanding performance, stability, and durability, making them ideal for large-scale lithium extraction projects. The company collaborates with industry partners to customize solutions and optimize the efficiency of the extraction process, catering to the increasing demandfor lithium in electric vehicle batteries and renewable energy storage systems. Sunresin has three commercial deployments including Lanke Lithium (20,000 tpa of LCE), Zangge Lithium (20,000 tpa of LCE) and Jintai Lithium (7,000 tpa of LCE), in addition to numerous projects and partnerships at the evaluation, pilot and development-stage in South America, Australia, North America, and Asia.

Indigo Exploration is working with Dr.’s Gary Kordosky and David Dreisinger as Advisors to advance the testing and development of Direct Lithium Extraction (DLE) for its Alberta lithium brines. Dr. Kordosky worked throughout his career on solvent extraction technologies with Henkel, Cognis, and BASF corporation. He began toinvestigate lithium solvent extraction over 20 years ago and brings a deep experience in solvent extraction chemistry and industrial process design to help Indigo. Dr. Dreisinger is a Professor and Chair of Hydrometallurgy at the University of British Columbia with general background in metal separation and recovery using ion exchange, solvent extraction, adsorption and membranes. Together with his students and industrial partners, he has researched various DLE technologies for more concentrated brine solutions such as those found in the salars of the South American lithium triangle.