Rodinia Minerals (TSX-V: RM) Defines 2.5 km by 4 km High-Grade Lithium-Potash Zone Near Surface at Salar De Diablillos Through Auger Drilling

Rodinia Minerals (TSX-V: RM) Defines 2.5 km by 4 km High-Grade Lithium-Potash Zone Near Surface at Salar De Diablillos Through Auger Drilling

Toronto, Ontario - May 26, 2010 (Investorideas.com Mining stocks Newswire) - Rodinia Minerals Inc. ("Rodinia" or the "Company") (TSX-V: RM; OTCQX: RDNAF) announces completed phase II sample results from its auger drill exploration program on its Salar de Diablillos lithium-brine project in Salta, Argentina ("Diablillos" or the "Salar") (See Press Releases dated March 1, 2010 and April 20, 2010).

Based on the completed sampling program of 102 sample holes, the Diablillos auger drill exploration program returned lithium ("Li") values of up to 1,000 milligrams per litre ("mg/L") and potassium ("K") values of up to 11,000 mg/L. Focusing on the nucleus of the Salar, which the Company believes represents the highest probability for production (see Figure 1 below), results returned average Li of 868 mg/L and average K of 9,300 mg/L with favourable magnesium ("Mg") to Li ratio of 3.98 and attractive sulphate ratio of 5.33 SO4:Li. The results also indicate that the higher-grade Salar nucleus is open to the east. Previously reported results for the auger drill program were based on a total of 30 sample holes. The full set of results reinforces the Company's belief that Diablillos may contain high concentrations of lithium and potash and that the project may have the potential to become a lithium carbonate producer. The Company remains encouraged by the presence of near-surface brines that contain similar, and in many instances higher, lithium and potash concentrations to other established brine developers in South America.



The program successfully covered a large portion of the Salar which returned average results of 724 mg/L Li, 7,975 mg/L K, 3.97 Mg:Li, and 6.66 SO4:Li. The easternmost portion of the Salar could not be sampled due to the presence of "caliche", a hard calcium carbonate layer overlying the lithium bearing brines. This caliche layer was also encountered in certain holes throughout the Salar and could not be penetrated by the auger drill. Work completed thus far indicates that this caliche layer could be penetrated by a standard rig, by either reverse circulation or diamond drilling. In general, lithium values decreased towards the salar margins to the north and south, however drilling will be required to establish whether this trend is consistent at depth. Rodinia anticipates that it will commence an RC drilling program shortly to test the depth of the aquifer, as well as the lithium potential under the areas covered by hard caliche.



Figure 1 - Sampling Contour Map, Salar de Diablillos



To view Figure 1 - Sampling Contour Map, Salar de Diablillos, please visit the following link: http://media3.marketwire.com/docs/RM0526.jpg.



Throughout the auger sampling, Rodinia employed a sampling procedure designed to ensure sample integrity by minimizing contamination of brine samples through the dissolution of overlying sediments and evaporates that may be enriched in lithium. All the holes were drilled to a depth sufficient to ensure penetration of the overlying clay layer, which varies in thickness between one and over three metres. Below the clays, a medium to coarse-grained sand aquifer was encountered containing high-grade lithium brine in its porous space. A historical drill hole in the south eastern margin of the Salar indicates the presence of this aquifer to a vertical depth of at least 75 metres, with material coarsening at depth to a coarse basal conglomerate (SEGEMAR; www.segemar.gov.ar).



Sample integrity was maintained by pushing four inch casing down into the hole and pumping, where possible, the contents of the hole. The hole was then left to refill from the aquifer below, ensuring proper representation of brine geochemistry. This brine was then sampled and decanted before collection in sealed plastic containers that had been previously rinsed in the same brine. All samples were sent to ALS Laboratory Group, Environmental Division, in Fort Collins, CO, USA where Rodinia is sending both its Diablillos and Clayton Valley project samples.



All exploration and drilling initiatives undertaken by Rodinia is supervised by William Randall MSc (Geology), the Vice President Exploration of Rodinia. Mr. Randall is a qualified person, as defined by National Instrument 43-101, and he has reviewed and approved the scientific and technical information in this release. According to the Company's sampling protocol, sample size is to exceed 300 millilitres and be stored in clean, secure containers for transportation. The prepared samples are then forwarded to the ALS Laboratory Group, Environmental Division, in Fort Collins, CO (USA) for analysis. A rigorous QA/QC program is implemented consisting of regular insertion of standards and blanks to ensure laboratory integrity.

About Rodinia Minerals Inc.:
Rodinia Minerals Inc. is a Canadian mineral exploration company with a primary focus on lithium exploration and development in North and South America. The Company is positioned to capitalize on the expected increase in demand for lithium carbonate that is projected to result from the anticipated paradigm shift to mass adoption and use of key lithium applications like lithium-ion batteries as well as glass ceramics, greases, pharmaceuticals etc.


Rodinia is currently exploring its Clayton Valley project in Nevada, USA, which surrounds the only lithium-brine producer in North America, and its Diablillos project in Salta, Argentina.



Please visit the Company's web site at www.rodiniaminerals.com or write us at info@rodiniaminerals.com. Follow us on Twitter: http://twitter.com/RodiniaLithium.

Cautionary Notes
Except for statements of historical fact contained herein, the information in this press release constitutes "forward-looking information" within the meaning of Canadian securities law. Such forward-looking information may be identified by words such as "plans", "proposes", "estimates", "intends", "expects", "believes", "may", "will" and include without limitation, statements regarding the impact of the drill program at the Diablillos property and results of such drill program; the potential of the Company's projects; the potential results and timetable for further exploration with respect to the Clayton Valley project and the Diablillos property, the timetable with respect to future acquisitions and exploration developments at Clayton Valley and Diablillos, timetable for further exploration, analysis and development, title disputes or claims; and governmental approvals and regulation. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from such statements. Factors that could cause actual results to differ materially include, among others, metal prices, competition, financing risks, acquisition risks, risks inherent in the mining industry, and regulatory risks. Most of these factors are outside the control of the Company. Investors are cautioned not to put undue reliance on forward-looking information. Except as otherwise required by applicable securities statutes or regulation, the Company expressly disclaims any intent or obligation to update publicly forward-looking information, whether as a result of new information, future events or otherwise.



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.



Contacts

Aaron Wolfe
Rodinia Minerals Inc.

Vice President, Corporate Development
+1 (416) 309-2696
www.rodiniaminerals.com



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