SOURCE: i-minerals inc.

August 04, 2005 13:23 ET

Kaolin Testing Yields Excellent Results

VANCOUVER, BC -- (MARKET WIRE) -- August 4, 2005 -- i-minerals inc. (TSX-V: IMA) has received results for its initial kaolin testing program from Ginn Mineral Technology that show the kaolinitic clays of the Helmer -- Bovill property responding favorably to standard kaolin processing techniques to produce kaolin products that have significant value in the paper, paint and ceramic industries.

The Company sent three samples comprised of two primary or residual clay and one sedimentary clay samples to Ginn Mineral Technology to characterize the clay samples for physical, chemical and mineralogical properties as well as assess the responsiveness of the clays to commercial processing technologies. Chemical and mineralogical characterization included XRF, XRD, SEM and Cation Exchange Capacity (CEC). Physical and optical characterization included Particle Size Distribution (PSD), Viscosity, Abrasion, Tappi Brightness and Whiteness.

The chemical and mineralogical analyses show the residual clay crude to be primarily composed of quartz with halloysite and kaolinite clays, muscovite and microline. Classification to 80% < 2 microns yields a product that is virtually all halloysite and kaolinite. The chemical and mineralogical analyses show the sedimentary clay crude to be primarily kaolinite with quartz and minor halloysite and muscovite. Classification to 90% < 2 microns yields a product that is primarily kaolinite with minor halloysite and quartz.

Brightness results for the primary clay products were outstanding. Tappi Brightnesses of 90.5% to 93% were achieved from the 80% < 2 micron material after being treated with a super-conducting ("SC") magnet and leached -- an accepted kaolin process technology. The classified sedimentary kaolin product did not respond as well to the SC magnet and leaching, but calcined products of a < 325 mesh fraction and the 90% < 2 micron fraction have brightnesses of almost 84% and over 87%, respectively.

The report titled "Kaolinite/Halloysite Clay Evaluation" by Michael Ginn, a recognized expert in kaolin clay research and development, noted: "Processing [the primary kaolin samples] is consistent with processing other primary clay deposits and technically proves the feasibility... the products generated from the composite sample have excellent brightness and color indices. This attribute has significant value in the paper, paint and ceramic industries." The report indicates that the calcined sedimentary clay product should have significant value in the mid-brightness calcined clay markets.

"We are very pleased with the kaolin results to date," stated Roger Kauffman, President and CEO of i-minerals inc. "The brightness results are the best we have ever seen from the Helmer-Bovill property. Kaolin yields from this bench scale processing compare favorably with other residual clay producers such as those in Cornwall, England. It is important to note that the majority of the byproducts generated during kaolin production are minerals of economic significance -- quartz, potassium feldspar and possibly mica. Including the production of these byproduct minerals, it appears we should be able to generate total yields in excess of 70% from every ton of crude residual clay."

A. Lamar Long, CPG, is the Qualified Person ("QP") for the Helmer-Bovill project under NI 43-101. He oversees the quality control and quality assurance program and the construction of all samples for metallurgical analysis and reviews all analytical results prior to public release.

i-minerals inc.
per: "Roger Kauffman"

Roger Kauffman,
President & CEO
The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.

This News Release includes certain "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995. Without limitation, statements regarding potential mineralization and resources, exploration results, and future plans and objectives of the Company are forward-looking statements that involve various risks. Actual results could differ materially from those projected as a result of the following factors, among others: changes in the world wide price of mineral market conditions, risks inherent in mineral exploration, risk associated with development, construction and mining operations, the uncertainty of future profitability and uncertainty of access to additional capital.

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