TIDMBKY
RNS Number : 3501Y
Berkeley Energy Limited
08 September 2015
BERKELEY ENERGY LIMITED
AIM RELEASE | 8 SEPTEMBER 2015 | AIM/ASX:BKY
IMPRESSIVE METALLURGICAL TESTWORK RESULTS ON ZONA 7
Metallurgical testwork results have confirmed that the Zona 7
ore is amenable to low cost heap leaching through the proposed
processing facilities at the Company's 100% owned Salamanca Project
located in Western Spain.
Testwork on representative samples across a range of ore types
has indicated that recoveries of over 85% can be expected with low
acid consumption (12-18 kg/t) and at a coarse crush size. The ore
is easy to crush and has a low abrasion index. It also exhibits
good geotechnical properties, suitable for high lifts on the heap
leach pads.
The high recoveries were achieved very rapidly in less than
thirty days of leaching with virtually 100% of the soluble uranium
going into solution and therefore readily recoverable in the
proposed processing facilities.
The Zona 7 deposit is located within 10 kilometres of the
approved location of the proposed processing plant and currently
hosts an Inferred Mineral Resource Estimate of 23.2 million tonnes
averaging 589 ppm U(3) O(8) for 30.1 million pounds of U(3) O(8)
(at a 200 ppm U(3) O(8) cut-off grade).
Recently announced infill drill results have confirmed the broad
thickness and high grade of the shallow deposit. The final infill
drill results and an upgraded Mineral Resource Estimate are due to
be reported in September.
These highly impressive metallurgical testwork results are
important as they enhance the economic significance of the Zona 7
deposit and support the Board's decision to rapidly incorporate the
deposit into the overall development plans of the Salamanca
Project.
For further information contact:
Paul Atherley Hugo Schumann John Prior / Paul
Gillam
Managing Director Corporate Manager Numis Securities
Nomad & Broker
+44 207 478 3900 +44 207 478 3900 +44 207 260 1000
info@berkeleyenergy.com
Competent Persons Statement
The information in this announcement that relates to the 2015
Metallurgical Testwork Results for Zona 7 is based on information
compiled by Mintek under the supervision of Mr. David Dodd, who is
a Fellow of the Southern African Institute of Mining and
Metallurgy. Mr. Dodd is independent of Berkeley and is an
independent consulting metallurgist affiliated to MDM Engineering
Limited an independent engineering company based in South Africa.
Mr Dodd has sufficient experience which is relevant to
metallurgical processing of 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 2012
Edition of the 'Australasian Code for Reporting of Exploration
Results, Mineral Resources and Ore Reserves'. Mr. Dodd consents to
the inclusion in the report of the matters based on his information
in the form and context in which it appears.
The information in this announcement that relates to the 2015
Exploration Results is extracted from the report entitled 'Drilling
Confirms Broad High Grade Mineralisation at Zona 7' dated 1
September 2015 which is available to view on Berkeley's website at
www.berkeleyenergy.com. The information in the original ASX
Announcement that relate to the 2015 Exploration Results is based
on information compiled by Malcolm Titley, a Competent Person, who
is a Member of The Australasian Institute of Mining and Metallurgy.
Mr. Titley is independent of Berkeley and Director of Maja Mining
Limited, an independent consultancy based in the UK. Mr Titley 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 2012 Edition of the 'Australasian Code for
Reporting of Exploration Results, Mineral Resources and Ore
Reserves'. The Company confirms that it is not aware of any new
information or data that materially affects the information
included in the original market announcement. The Company confirms
that the form and context in which the Competent Person's findings
are presented have not been materially modified from the original
market announcements.
The information in this report that relates to 2014 Exploration
Results is extracted from the reports entitled 'Thick, High Grade
Mineralisation Intersected at Zona 7' dated 18 August 2014 and
'Further Thick, High Grade Drill Intersections at Zona 7' dated 10
November 2014 which are available to view on Berkeley's website at
www.berkeleyenergy.com. The information in the original ASX
Announcements that relate to the 2014 Exploration Results is based
on information compiled by Robert Behets, a Competent Person who is
a Fellow of The Australasian Institute of Mining and Metallurgy. Mr
Behets is a holder of shares, options and performance rights in,
and is a director of, Berkeley. Mr Behets 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 2012
Edition of the 'Australasian Code for Reporting of Exploration
Results, Mineral Resources and Ore Reserves'. The Company confirms
that it is not aware of any new information or data that materially
affects the information included in the original market
announcement. The Company confirms that the form and context in
which the Competent Person's findings are presented have not been
materially modified from the original market announcements.
The information in this report that relates to the Mineral
Resources is extracted from the report entitled 'Salamanca Project
Total Resource increased by 43% to 88.2 Mlbs U(3) O(8) following
substantial increase in Zona 7 Resource' dated 26 November 2014 and
is available to view on Berkeley's website at
www.berkeleyenergy.com. The information in the original ASX
Announcement that relates to the Mineral Resources for Zona 7 was
based on information compiled by Malcolm Titley, a Competent Person
who is a Member of The Australasian Institute of Mining and
Metallurgy. Mr. Titley is independent of Berkeley and Director of
Maja Mining Limited, an independent consultancy based in the UK. Mr
Titley 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 2012 Edition of the 'Australasian Code for
Reporting of Exploration Results, Mineral Resources and Ore
Reserves'. The Company confirms that it is not aware of any new
information or data that materially affects the information
included in the original market announcement and, in the case of
estimates of Mineral Resources that all material assumptions and
technical parameters underpinning the estimates in the relevant
market announcement continue to apply and have not materially
changed. The Company confirms that the form and context in which
the Competent Person's findings are presented have not been
materially modified from the original market announcement.
Forward Looking Statement
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.
Appendix A: Details of the Zona 7 Metallurgical Test Work
Program
Mintek of South Africa evaluated the heap leach amenability of
Zona 7 ore based on leach recoveries, acid consumption and the
hydraulic performance by testing representative samples of
partially weathered and fresh ore at 12mm and 40mm crush sizes
respectively.
Three diamond drill composites were used for testing, namely
Composite A (partially weathered, low grade, 145kg), Composite C
(fresh, low grade, 157kg) and Composite D (fresh, high grade,
155kg). Chemical head assays of the composites returned grades of
249 U(3) O(8) , 292 U(3) O(8) and 1,380 ppm U(3) O(8) for
Composites A, C and D respectively.
Bond crushability work index testwork results indicates that the
ore can be classified as soft to very soft to crush. Bond abrasion
index values (Ai) of 0.1 g, 0.05 g and 0.02 g were obtained for
Composites A, C and D respectively, indicating that the material
was of low abrasion tendency.
Bond crushability work index test results
CWi (kWh/metric ton)
Sample Designation 75(th) Percentile Maximum Minimum
------------------- --------- ---------
Composite A 10.52 14.25 4.55
------------------- --------- ---------
Composite C 11.29 16.78 4.29
------------------- --------- ---------
Composite D 8.41 13.20 4.01
------------------- --------- ---------
The primary uranium minerals are uraninite and coffinite.
Diagnostic leach test results indicated 99% soluble uranium in
Composite D, 96% in Composite C and 75% in Composite A.
Six one metre column leach tests using the three composite
samples at crush sizes of 80% passing 12mm and 80% passing 40mm
were loaded with wet agglomerates (agglomerated with 98% H(2) SO(4)
and synthetic raffinate) and irrigated in open circuit with
synthetic raffinate for 30 days.
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