DURAN VENTURES INC 
By TSX.V: DRV
DURAN REPORTS 93% COPPER AND 91% MOLYBDENUM RECOVERIES FROM INITIAL METALLURGICAL TEST WORK ON THE MAIN AGUILA INTRUSIVE PORPHYRY
TORONTO, CANADA - January 9, 2012 - Duran Ventures Inc.
(TSX-V: DRV) ("Duran" or the "Company") is pleased to
announce that Duran Ventures Inc.'s metallurgical
consultant G&T Metallurgical Services Ltd. ("G&T"), based in
Kamloops B.C., has completed the preliminary program of
laboratory flotation testing on Aguila drill core composite
samples. The initial metallurgical work has been successful.
Mineralogy and locked cycle flotation test results indicate
that the copper and molybdenum essentially occur as primary
sulphides that can be readily recovered to a commercial
concentrate by standard flotation techniques.
Two sample composites were prepared by the Company's
geologists using 208 kilograms of Aguila drill core. The two
composites represent a higher grade composite sample and a
lower grade composite sample. The higher grade composite
sample was prepared from drill core intersecting the main
Aguila intrusive porphyry. The lower grade composite was
prepared from the mineralized sediments or wallrock. The
following tables included in this news release have been
taken from the G&T report, dated December 21,
2011, and a summary of the head assay analysis follows:
Composite | Cu % | Mo % | Fe % | Ag g/tonne | S % | C % | Cu(ox)% | Cu(CN)% |
Intrusive | 0.69 | 0.038 | 2.5 | 2 | 1.51 | 0.18 | 0.002 | 0.013 |
Sedimentary | 0.27 | 0.023 | 1.7 | 1 | 0.82 | 0.17 | 0.002 | 0.009 |
The metallurgical test program included batch rougher and
open circuit cleaner flotation tests on each composite, as
well as locked cycle flotation tests. Preliminary results
indicate that the process flow sheet for Aguila will be a
conventional copper-molybdenum porphyry flow sheet, with a
primary grind size of 150 micrometres K80 for
both composites followed by a regrind to 30 micrometres
K80 for the intrusive composite and a regrind to
25 micrometres K80 for the sedimentary
composite. The locked cycle flotation test on the intrusive
composite indicated that 93 percent of the copper and 91% of
the molybdenum in the feed was recovered into a final copper
concentrate containing 28 percent copper. This concentrate
also contained 1.5 percent molybdenum, and 82 g/tonne silver.
The locked cycle flotation test on the sedimentary composite
indicated that 83 percent of the copper and 82% of the
molybdenum in the feed was recovered into a final copper
concentrate containing 24 percent copper. This concentrate
also contained 1.7 percent molybdenum, and 110 g/tonne
silver.
The following tables summarize the test results from each
composite;
Product | Weight | Assay - percent or g/t | Distribution | ||||||||
Intrusive Test | % | Cu | Mo | Fe | S | Ag | Cu | Mo | Fe | S | Ag |
Flotation Feed | 100 | 0.71 | 0.04 | 2.6 | 1.51 | 3 | 100 | 100 | 100 | 100 | 100 |
Bulk Con | 2.4 | 27.7 | 1.463 | 31.0 | 34.1 | 82 | 93 | 91 | 28 | 54 | 63 |
Bulk 1st Clnr Tail | 5.7 | 0.50 | 0.02 | 13.3 | 8.30 | 4 | 4 | 3 | 29 | 32 | 7 |
Bulk Ro Tail | 91.9 | 0.03 | 0.002 | 1.2 | 0.24 | 1 | 3 | 6 | 43 | 15 | 30 |
Product | Weight | Assay - percent or g/t | Distribution |
Sedimentary Test | % |
The conclusion in the report entitled "PRELIMINARY ASSESSMENT
OF THE TWO COMPOSITE SAMPLES FROM THE AGUILA DEPOSIT KM3161",
dated December 21, 2011 and prepared by G&T Metallurgical
Services Ltd. from their work performed on the Aguila
intrusive and sedimentary composite samples is quoted as
follows:
"A preliminary assessment metallurgical test program aimed to
investigate ore characteristics and flotation response of two
composite samples from the Aguila deposit was undertaken. The
two composites samples constructed for this program of study
represented Intrusive and Sedimentary ores.
On average, the samples contained about 0.5 percent copper, 0.03 percent molybdenum, and 1.5 g/tonne silver.
Mineralogy showed that, at a nominal 150 micrometres K80 primary grind sizing, chalcopyrite was slightly over 45 percent liberated in the two samples, with the majority of the particle interlocking occurring with non- sulphide gangue.
The average Bond ball and Bond rod work indices for the two samples were 13.2 and 14.1 kWh/tonne, respectively. SMC test results indicated that the average A*b and t10 at 1 kWh/t values were about 29 and
25, respectively. These ore hardness results would classify the two samples as hard.
A basic bulk flotation flow sheet was developed incorporating a moderate primary grind size of about 150
