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Wednesday , 21 Apr 2010
TORONTO, ONTARIO--(Marketwire) -
Rodinia Minerals Inc. ("Rodinia" or the "Company") (TSX VENTURE:RM)(OTCQX:RDNAF), is pleased to report that it has received positive phase II sample results from its auger drill exploration program on its Salar de Diablillos lithium-brine project in Salta, Argentina ("Diablillos"). The Company believes the phase II results may be indicative of high concentrations of lithium and potash, and are encouraged to see results that exceed the initial sample results (see Press Release dated March 1, 2010). The phase II sample results were taken at depths between 3 and 5 metres below surface, whereas the previously reported results were taken between 1 and 3 metres below surface.
Results from the phase II sampling of brines have returned lithium ("Li") values of up to 1,000 milligrams per litre ("mg/L") and favourable magnesium ("Mg") to lithium ratios. The samples, all taken from within aquifers on the Diablillos property, averaged 895 mg/L Li with ratios of 4.44 Mg:Li, and 5.22 SO4:Li. These samples are from the aquifer that will be the focus of subsequent exploration programs and will be used to assess the feasibility of production in the future. The results represent the first batch of deep auger drilling samples currently being performed on a 300 metre by 300 metre grid over the Diablillos project. The Company expects more results over the next few months. The results from phase II aquifer sampling are summarized in the table and figure below.

To view Figure 1, please visit the following link: http://vantagewire.lyris.net/t/2497/216145/562/0/
The Company continues to employ a sampling procedure that is 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 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. As previously outlined, 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; http://vantagewire.lyris.net/t/2497/216145/563/0/).
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.
Rodinia's auger drill exploration program is expected to continue on a 300 metre by 300 metre grid across the property, and gravity surveys and a reverse circulation ("RC") drill program are planned. The gravity survey will be used to determine the basement depth of the prospective areas over the salar and will help generate the initial targets for a planned 32 drill hole RC program. The continuation of the auger drill program and the initiation of gravity surveys and RC drilling are expected to lead towards a resource estimate at Diablillos later in 2010.
The project 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."