Azumah Resources Limited (ASX: AZM)
ASX RELEASE
26
AUGUST 2008
Encouraging Kunche Metallurgical Results
Overall
Gold Recovery Expected To Exceed 90%
With
Up To 40% Recoverable By Gravity
West African gold explorer
Azumah Resources Limited (ASX: AZM) is pleased to announce results from the
first stage of metallurgical test work being conducted on samples of primary
(unoxidised) mineralisation from the Kunche resource at the Company's 100% owned
Wa-Lawra Gold Project in Ghana.
Initial metallurgical
results indicate that recoveries of over 90% should be obtained on typical
resource-grade Kunche mineralisation using conventional gold processing
technology comprising gravity separation followed by carbon-in-leach
("CIL").
Importantly, between 25%
and 40% of the gold is likely to be recoverable using a preliminary gravity
separation phase, which should impact favourably on bottom line operating
costs.
The first stage of this
laboratory scale test work was undertaken in Perth
by independent metallurgical laboratory, AMDEL Ltd, on a blend of ore and
marginal grade material grading approximately 1.0g/t gold. The test
results returned a total gold recovery of 86.5% (grind size of 80% passing 75�m,
final solid tail of 0.12 g/t Au), of which approximately 40% was recovered by
gravity separation (Table 1).
"Whilst a number of
gold operations in Ghana are burdened with refractory ores requiring expensive
specialist treatment regimes, it is particularly encouraging that Kunche
mineralisation can be treated using conventional gold processing technology -
especially as 72% of the total 516,000 ounce indicated and inferred gold
resource at Kunche is comprised of primary, unoxidised mineralisation,"
commented Azumah Executive Chairman, Mr Stephen Stone.
"The next phase of
test work is already underway focused on Kunche mineralisation grading closer
to the average combined indicated and inferred resource grade of 1.9g/t
gold," Mr Stone continued. "Metallurgical test work will also
be conducted on samples of primary mineralisation from the recently discovered
Bepkong deposit, for which we expect to release a maiden JORC compliant
resource estimate shortly."
Stephen
Stone
Executive Chairman - Tel:
+61 (0)418
804564
stone@azumahresources.com..au
Table
1: Summary Metallurgical Results for Kunche Primary Material
Grind Size
|
Gold Grades
|
Gold Recovery
|
80%
passing
(�m)
|
Feed
(g/t)
|
Final
Tail
(g/t)
|
Gravity
(%)
|
CIL
(%)
|
Total
(%)
|
106
|
1.14
|
0.16
|
25.5
|
60.5
|
86.0
|
75
|
0.89
|
0.12
|
39.3
|
47.2
|
86.5
|
Notes:
1. Kunche sample prepared from
� core by combining marginal and ore grade intervals from drill holes KRCD018
and KRDC136.
2. Gravity separation conducted
in a laboratory scale Knelson concentrator with the tail collected for CIL
testing and the concentrate amalgamated with mercury and assayed.
3. CIL tests conducted in Perth
tap water for 48 hours at 40% solids (w/w), a carbon concentration of
approximately 15g/l and an initial cyanide concentration of 500mg/l. The pH was
maintained at 10 and dissolved oxygen levels ranged between 8 and 10mg/l.
Competent Persons and Forward Looking Statements:
The
information in this report that relates to Metallurgical Results is based on
information compiled by Mr G V Ariti. Mr Ariti is a metallurgist and
Non-Executive Director of Azumah Resources Limited. Mr Ariti is a Member
of The Australasian Institute of Mining and Metallurgy and has sufficient
experience which is relevant to the style of mineralisation and type of deposit
under consideration and to the activity which he is undertaking to qualify as a
Competent Person as defined in the 2004 Edition of the 'Australasian Code for
Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mr
Ariti consents to the inclusion in this report of the matters based on his
information in the form and context in which it appears.
The
information in this report that relates to Exploration Results is based on
information compiled by Mr Bernard Aylward. Mr Aylward is the General
Manager of Azumah Resources Limited. Mr Aylward is a Member of The
Australasian Institute of Mining and Metallurgy and has sufficient experience
which is relevant to the style of mineralisation and type of deposit under
consideration and to the activity which he is undertaking to qualify as a
Competent Person as defined in the 2004 Edition of the 'Australasian Code for
Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mr
Aylward consents to the inclusion in the report of the matters based on
information in the form and context in which it appears.
Statements
regarding plans with respect to the Company's mineral properties are
forward-looking statements. There can be no assurance that the Company's
plans for development of its mineral properties will proceed as currently
expected. There can also be no assurance that the Company will be able to
confirm the presence of additional mineral deposits, that any mineralisation
will prove to be economic or that a mine will successfully be developed on any
of the Company's mineral properties.
All notes pertaining
to the Kunche resource estimation can be found at www.azumahresources.com.au