VANCOUVER, April 29, 2014 /PRNewswire/ - Cayden Resources
Inc. (TSX.V:CYD, OTCQX: CDKNF) ("Cayden" or the
"Company") is pleased to announce that it has received
initial results from its preliminary metallurgical test programs at
it's El Barqueño project in Jalisco,
Mexico where cyanide leach tests achieved up to 96.9% gold
recoveries.
The results are from whole-ore cyanidation and rougher
floatation tests from 5 composite samples taken throughout the
Azteca target. The test program is being conducted at ALS
Metallurgy under the supervision of metallurgical consultant
Thomas Shouldice (Qualified
Person).
Table 1: Head grades of composite samples:
|
|
Head
Grades
|
|
Composite
Description
|
Au (g/t)
|
Ag (g/t)
|
Cu (%)
|
1
|
Quartz Matrix -
Chalcopyrite Zone
|
1.52
|
16
|
0.66
|
2
|
Hematite Matrix -
Oxide Zone
|
2.28
|
10
|
0.20
|
3
|
Hematite Matrix -
Below Oxide Zone
|
2.44
|
8
|
0.12
|
4
|
Fault Crushed Vein
Zone with Gouge
|
4.22
|
9
|
0.06
|
5
|
Fault Gouge with High
Au, Cu, +/- Ag, Pb, Zn (rare)
|
1.35
|
27
|
0.67
|
The whole ore cyanidation tests were performed at a nominal
100um K80 grind size with a cyanide dosage of 2000 ppm solution
strength. Gold recoveries across all the composites exceeded
90% with the exception of composite 5.
Table 2: Whole ore cyanidation test results:
|
|
|
|
Composite
Description
|
Au (%)
|
Ag (%)
|
1
|
Quartz Matrix -
Chalcopyrite Zone
|
94.5
|
55.9
|
2
|
Hematite Matrix -
Oxide Zone
|
96.9
|
70.1
|
3
|
Hematite Matrix -
Below Oxide Zone
|
95.4
|
68.3
|
4
|
Fault Crushed Vein
Zone with Gouge
|
91.0
|
78.3
|
5
|
Fault Gouge with High
Au, Cu, +/- Ag, Pb, Zn (rare)
|
61.8
|
47.9
|
Composite 5 had higher cyanide consumption due to elevated
sulphide content but typically such an extraction would not be
completed with cyanide leach only. Flotation would be used to
remove the sulphides for optimal recovery.
The rougher flotation tests were performed at a nominal 90 um
K80 grind size and a circuit pH of 9. These results showed
significantly higher copper and silver recoveries while gold
recoveries were between 72.5% and 82.4%.
Table 3: Rougher floatation test results:
|
|
Recoveries
|
|
Composite
Description
|
Au (%)
|
Ag (%)
|
Cu (%)
|
1
|
Quartz Matrix -
Chalcopyrite Zone
|
81.4
|
81.9
|
90.9
|
2
|
Hematite Matrix -
Oxide Zone
|
82.4
|
60.1
|
66.8
|
3
|
Hematite Matrix -
Below Oxide Zone
|
80.9
|
79.1
|
87.7
|
4
|
Fault Crushed Vein
Zone with Gouge
|
78.0
|
74.6
|
89.7
|
5
|
Fault Gouge with High
Au, Cu, +/- Ag, Pb, Zn (rare)
|
72.5
|
82.9
|
89.7
|
The results suggest very promising potential to produce gold and
other metals using a standard leach plant, through a floatation
plant or a hybrid process that would maximize the extraction of
gold, copper and silver. Even though the results are preliminary
and little optimization has yet been performed they clearly afford
the Company flexibility in how to develop the project.
Cayden is currently undertaking additional batch cleaner and
cyanidation tests on tails from the floatation circuit.
President and CEO, Ivan Bebek
states: "Having excellent preliminary metallurgical results from
both leach and flotation tests is remarkable at this stage of
project development. We look forward to rapidly advancing the El
Barqueno project on all fronts."
Qualified Persons - The metallurgical testwork was
completed by ALS Laboratories, under the supervision of
Thomas Shouldice P.Eng. of TS
Technical Services Ltd., a Qualified Person under the terms of NI
43-101. Thomas Shouldice, P.Eng of
TS Technical Services Ltd., is independent of Cayden and has
approved the contents of this press release that pertain to the
metallurgical test work results and their interpretation.
About Cayden Resources - Cayden is a junior mining
company focused on delivering shareholder value through the
acquisition, exploration and development of precious metal projects
in Mexico. The management team at
Cayden is highly experienced with an impressive track record of
success in the discovery, development and financing of mineral
projects. Cayden is also strongly committed to the highest
standards for environmental management, social responsibility,
health and safety for its employees and neighboring communities.
Cayden trades on the TSX Venture Exchange under the symbol "CYD"
and under CDKNF on the OTCQX Exchange.
For more information on
Cayden Resources, please visit our website at
www.caydenresources.com
Forward Looking and other Cautionary Information -
Neither the TSX Venture Exchange nor any other regulatory authority
accepts responsibility for the adequacy or accuracy of this
release.
This release includes certain statements that may be
deemed "forward-looking statements". Forward-looking information is
information that includes implied future performance and/or
forecast information including information relating to, or
associated with, exploration and or development of mineral
properties. These statements or graphical information involve known
and unknown risks, uncertainties and other factors which may cause
actual results, performance or achievements of the Company to be
materially different (either positively or negatively) from any
future results, performance or achievements expressed or implied by
such forward-looking statements. Investors should review the
Company's AIF which is available at www.sedar.com
SOURCE Cayden Resources Inc.