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Clifton Star Produces High Grade Gold Concentrates from Duparquet Project

Clifton Star Resources Inc. (CFO.V) has received the results of a laboratory study conducted by SGS Minerals that succeeded in producing high grade gold concentrates from mineral samples of the Duparquet Project.

Six samples from the Duparquet Project were treated using a cleaner flotation scheme developed by SGS Minerals to recover a high grade gold concentrate.

The gold grade of the cleaner concentrates ranged from 39 g/t Au to 84 g/t Au and the sulphur grade ranged from 21% S to 36 % S. These grades of gold and sulphur are amenable to toll smelting through copper smelting operations.

The average overall gold recovery was 89.6%. This overall recovery is close to the 93% overall gold recovery obtained with the pressure oxidation treatment of lower grade flotation concentrates.

The production of high grade concentrates raises the possibility of avoiding the capital and operating cost of building a full scale pressure oxidation pre-treatment plant for the Duparquet Project. The capital cost of the POX circuit in the Tenova Bateman cost study, presented as part of the recent PEA, was $157.5 Million out of an estimated cost of $270 Million for the entire Mill. This cost would no longer be required but there would be some much lower additional costs for cleaner flotation, concentrate filtering, drying and shipping. Similarly, the operating cost for the POX area of the mill was estimated at $6.67/t of ore. This cost would not be required but would be substituted by the lower operating costs for concentrate preparation and shipping, Clifton Star said in a statement.

The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.

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The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.

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