Gitennes provides update on Urumalqui Project, Peru

VANCOUVER - Gitennes Exploration Inc. reported on the result of mineral processing tests from the Urumalqui gold Ð silver project in Peru.
A 50 kilogram sample was collected in December 2008 from the vein on underground level 28, and sent to C.H. Plenge & Compa–ia S.A. in Lima for gravity, flotation and cyanide test work. Results are encouraging:
1) The head grade of the sample was 4.45 g/t gold and 9.45 oz/ton silver, with a sulphur content of 0.19%.
2) Using a Falcon SB40 concentrator and a crush to -65 mesh, a gravimetric concentrate grading 91 oz/ton silver and 63.6 g/t gold was obtained, for recoveries of 16% of the silver and 20% of the gold.
3) The left-over material (ÒtailsÓ) from the gravity test represented 98.5% of the original weight, and had a head grade of 7.57 oz/ton silver (84%) and 3.35 g/t gold (80%). This material was crushed to -200 mesh and then subjected to both flotation and cyanide-leach tests.
4) Floating the tails recovered 49% of the remaining silver and 39% of the gold to produce a concentrate that graded 131 oz/ton silver and 45.8 g/t gold.
5) Leaching the tails with cyanide achieved 65% recovery of the remaining silver and 93% of the gold.
Plenge suggests that the preferred process, based on this sample, is to treat the Urumalqui Vein mineralization with a gravimetric circuit followed by treating the tails with cyanide.
* Target recoveries of 70% of the silver and 94.5% of the gold might be achieved by a simple combination of gravity separation followed by cyanide treatment of the tails.
This series of tests differs from those previously reported which were based upon conventional flotation followed by cyanide leaching of a concentrate. The earlier tests were done using quarter-core samples obtained by drilling.
Gold and silver mineralization at Urumalqui is hosted within a simple quartz vein surrounded by a much lower grade but broad envelope of disseminated mineralization. Most of the silver is contained in the mineral argentite, the remainder with gold in electrum. Pyrite is also present.
The sample tested should not be considered to be representative of the entire deposit as it was collected underground from a single, abandoned working face. Also the assay value of 325 g/t (9.49 oz/Ton) silver and 4.45 g/t gold across 2 metres is relatively high for this portion of the vein, and much higher than the values of a surface outcrop 28 metres above (54.6 g/t silver and 860 ppb gold).
The company’s address is Suite 2390 - 1055 West Hastings Street, Vancouver, BC V6E 2E9, (604) 682-7970, fax: (604) 608-9014, email: [email protected].