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Gold/Mining/Energy : Copper - analysis

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To: LoneClone who wrote (1636)	3/14/2007 10:12:51 AM
From: LoneClone	Read Replies (1) of 2131

Zambezi Resources reports copper recovery of 99% at Cheowa Source: Edited Press Release metalsplace.com Zambezi Resources Limited said Wednesday that flotation tests, at Cheowa, on coarser grind (106 micron) material yielded a 99% recovery of copper to concentrate grading 19.3% copper, and a 95% recovery of gold to concentrate grading 6.3 g/t gold. The company said flotation tests on finer grind material (75 micron), with regrinding of the concentrate, yielded an outstanding result of over 97% recovery of copper at a concentrate grade of over 31% copper, and a 90% recovery of gold at a concentrate grade of 6.4 g/t gold. Crushing and grinding parameters returned values within the normal range. The Abrasion Index reported at 0.19 is considered on the low side of normal. A Bond Ball Mill Work Index of 21 is also considered within the normal range. Mineralogical work indicates that the sulphide assemblage chalcopyrite, pyrite and pyrrhotite comprises 90-95% of the concentrates. These minerals mostly occur as discrete crystals free of gangue materials, which is consistent with the favourable metallurgical behaviour as indicated by the testwork.

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