Gitennes provides update on Urumalqui Project, Peru

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[{"type":"text","content":"\n\n\n\nVANCOUVER, April 17 /CNW/ - Gitennes Exploration Inc. (TSX-GIT) is\npleased to update shareholders on the result of mineral processing tests from\nthe Urumalqui gold - silver project in Peru.\n\n\nA 50 kilogram sample was collected in December 2008 from the vein on\nunderground level 28, and sent to C.H. Plenge & Compania S.A. in Lima for\ngravity, flotation and cyanide test work. Results are encouraging:\n\n\n1) The head grade of the sample was 4.45 g/t gold and 9.45 oz/ton\n silver, with a sulphur content of 0.19%.\n2) Using a Falcon SB40 concentrator and a crush to -65 mesh, a\n gravimetric concentrate grading 91 oz/ton silver and 63.6 g/t gold\n was obtained, for recoveries of 16% of the silver and 20% of the\n gold.\n3) The left-over material ("tails") from the gravity test represented\n 98.5% of the original weight, and had a head grade of 7.57 oz/ton\n silver (84%) and 3.35 g/t gold (80%). This material was crushed to -\n 200 mesh and then subjected to both flotation and cyanide-leach\n tests.\n4) Floating the tails recovered 49% of the remaining silver and 39% of\n the gold to produce a concentrate that graded 131 oz/ton silver and\n 45.8 g/t gold.\n5) Leaching the tails with cyanide achieved 65% recovery of the\n remaining silver and 93% of the gold.\n\n\nPlenge suggests that the preferred process, based on this sample, is to\ntreat the Urumalqui Vein mineralization with a gravimetric circuit followed by\ntreating the tails with cyanide.\n\n\n- Target recoveries of 70% of the silver and 94.5% of the gold might be\n achieved by a simple combination of gravity separation followed by\n cyanide treatment of the tails.\n\n\nThis series of tests differs from those previously reported (December 11,\n2008) which were based upon conventional flotation followed by cyanide\nleaching of a concentrate. The earlier tests were done using quarter-core\nsamples obtained by drilling.\n\n\nGold and silver mineralization at Urumalqui is hosted within a simple\nquartz vein surrounded by a much lower grade but broad envelope of\ndisseminated mineralization. Most of the silver is contained in the mineral\nargentite, the remainder with gold in electrum. Pyrite is also present.\n\n\nThe sample tested should not be considered to be representative of the\nentire deposit as it was collected underground from a single, abandone...

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