NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR
DISSEMINATION IN THE UNITED STATES
PERTH, Western Australia, Dec. 22, 2011 /CNW/ - Perseus Mining Limited ("Perseus" or the "Company") (TSX & ASX: PRU) ("Perseus") is pleased to release an updated resource estimate for the
Edikan Gold Mine ("EGM") in Ghana, West Africa.
Highlights
- 954,000oz increase in Measured and Indicated ("M&I") mineral resources at EGM
-
M&I mineral resources at EGM now 143.9Mt, containing 5.3Moz of gold
-
Perseus's total M&I mineral resources increased to 184.5Mt containing 6.7Moz of gold
-
Perseus's total Inferred mineral resources increased 76,000oz to 76.9Mt containing 2.3Moz of gold.
-
A maiden Resource estimate has been declared for the Bokitsi deposit
-
Drilling is continuing on deposits the subject of the upgrade, assays
results for 50 holes pending
-
Revised reserve estimate based on the new resource models expected to be
completed in March 2012. Perseus's current Reserve base stands at 3.9Moz of gold.
-
Esuajah North resource upgrade will be completed in March 2012 following
completion of a large drilling program.
-
Further resource upgrades at EGM planned for 2012
-
Upcoming resource upgrade at Company's Côte d'Ivoire projects planned
for June Quarter 2012
Mark Calderwood, Managing Director's Comments
"We achieved another significant increase in Measured and Indicated
resources at EGM even though assay results from 50 drill holes within
the current resource upgrade areas are pending. The historic high
conversion rate for Inferred resources augurs well for future upgrades
to Measured and Indicated resources."
"The Esuajah North resource upgrade will be completed in March 2012
following completion of a large drilling program. Thirteen holes
remain to be drilled and assays for an additional 52 holes are
pending."
"The Company continues its excellent track record of growing its
Measured & Indicated resources organically at an average rate of 1.4Moz
per annum over the past four years, and strong upside potential
remains."
"The Company plans to ramp up exploration drilling on a number of new
targets at EGM and elsewhere in Ghana and Côte d'Ivoire during 2012."
EGM Resource Estimate
Drilling on the Fetish deposit during the past two years has grown the
deposit, with significant potential remaining to further expand the
resource. Measured and Indicated resources at Fetish have increased 62%
to 29.4Mt at 1.0g/t Au for 972,000 ounces, while Inferred resources
reduced by 31% to 7.5Mt at 1.0g/t Au for 248,000 ounces. Results for
15 drill holes are still pending and drilling at Fetish will continue
into 2012.
Infill drilling at Chirawewa enabled an initial Indicated resource
estimate and an increase in total resources. A more comprehensive
drill-out of Chirawewa will be undertaken after the deposit is
dewatered to allow better access to the pit floor. This drilling,
proposed for 2012, is in addition to results currently pending for 14
drill holes. Initial Indicated resources at Chirawewa are 4.5Mt at
1.1g/t Au for 167,000 ounces and Inferred resources increased 22% to
8.7Mt at 0.9g/t Au for 249,000 ounces.
Limited additional exploration drilling and grade control drilling on
the Abnabna-Fobinso deposit during 2011 significantly improved the
understanding of mineralisation controls of the resource model and
resulted in an increase in resources notwithstanding the 2.6Mt of ore
mined to 30 November 2011. Measured and Indicated resources at
Abnabna-Fobinso increased 8% to 72.6Mt at 1.1g/t Au for 2,515,000
ounces, while Inferred resources increased 109% to 11.1Mt at 1.0g/t Au
for 362,000 ounces. Subsequent to the resource cut-off date, a 42-hole
drill program has commenced at Abnabna-Fobinso targeting conversion of
Inferred resources within or near the base of the current pit design.
To date 15 holes have been completed and results are pending.
The Bokitsi deposit is a new addition to the resource inventory.
Indicated resources at Bokitsi total 2.6Mt at 2.5g/t Au containing
212,000 ounces of gold and Inferred resources are 1.6Mt at 1.7g/t Au
containing 89,000 ounces of gold. Results are pending for an
additional six drill holes.
The resource estimates are tabled below and notes to the estimates are
contained in Appendix 1.
Reserve Estimate EGM
In the new year the Company will undertake new pit designs at
Abnabna-Fobinso, Fetish, Bokitsi and the yet to be remodelled, Esuajah
North resource. Pit designs and a reserve estimate for Chirawewa will
be delayed until later in the year, following the planned extensive
drill programs.
Mark Calderwood
Managing Director
About Perseus Mining Limited
Perseus Mining Limited (ASX/TSX: PRU) has forged a reputation as one of
West Africa's most successful gold explorers, focused on under-explored
gold belts in the region. Perseus recently became a producer at its
Edikan Gold Mine in Ghana, and plans to produce at the rate of about
220,000 ounces of gold in the next 12 months, increasing to about
280,000 ounces per annum in 2013. Details of the project and latest
published mine plan are set out in the technical report entitled
"Technical Report - Central Ashanti Gold Project, Ghana" dated May 30,
2011.
Perseus is also planning the development of its Sissingué Gold Mine,
part of the Tengrela Gold Project in Côte d'Ivoire, with first
production targeted for 2013. Tengrela has the potential to become a
significant contributor to the Company's goal to develop into a 400,000
ounce per annum gold producer during 2013. Details of the Tengrela
project are set out within "Technical Report - Tengrela Gold Project,
Côte d'Ivoire" dated December 22, 2010."
Perseus will continue its strategy of rapidly increasing its resource
and reserve base during the ramp-up of the Edikan Gold Mine and
development of the Sissingué Gold Project.
The information in this report that relates to the mineral resources is
based on information compiled by Mr Aaron Green, who is a Member of The
Australian Institute of Geoscientists. Mr Green is a full-time
employee of Runge Limited. Mr Green 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'") and to qualify as a "Qualified Person"
under National Instrument 43-101 - Standards of Disclosure for Mineral
Projects ("NI 43-101"). Mr Green 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 Kevin Thomson, who is a Member of
Association of Professional Geoscientists of Ontario (a Recognised
Overseas Professional Organisation ('ROPO') included in a list
promulgated by the ASX from time to time) . Mr Thomson is a full-time
employee of the Company. Mr Thomson 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'") and to qualify as a "Qualified Person"
under National Instrument 43-101 - Standards of Disclosure for Mineral
Projects ("NI 43-101"). Mr Thomson consents to the inclusion in this
report of the matters based on his information in the form and context
in which it appears.
Mr Thomson verified the data disclosed, including sampling, analytical
and test data underlying the information contained herein. For a
description of Perseus' data verification process, quality assurance
program and quality control measure applied, the type of analytical or
testing procedures utilized, sample size, name and location of testing
laboratories, the effective date of the mineral resource and mineral
reserve estimates contained herein, details of the key assumptions,
parameters and methods used to estimate the mineral resources and
reserves set out in this report any known environmental, political,
legal, title, or other risks that could materially affect the potential
development of the mineral resources or reserves, readers are directed
to the technical report entitled "Technical Report - Central Ashanti
Gold Project, Ghana" dated May 30, 2011 and the technical report
entitled ''Technical Report - Tengrela Gold Project, Côte d'Ivoire''
dated December 22, 2010 in relation to the Edikan Gold Mine (formerly
Central Ashanti Gold Project) and the Tengrela Gold Project
respectively.
Caution Regarding Forward Looking Information: This report contains forward-looking information which is based on the
assumptions, estimates, analysis and opinions of management made in
light of its experience and its perception of trends, current
conditions and expected developments, as well as other factors that
management of the Company believes to be relevant and reasonable in the
circumstances at the date that such statements are made, but which may
prove to be incorrect. Assumptions have been made by the Company
regarding, among other things: the price of gold, that the Edikan Gold
Mine will achieve commercial production without material delay,
development of a mine at Tengrela, the receipt of required governmental
approvals, the accuracy of capital and operating cost estimates, the
ability of the Company to operate in a safe, efficient and effective
manner and the ability of the Company to obtain financing as and when
required and on reasonable terms. Readers are cautioned that the
foregoing list is not exhaustive of all factors and assumptions which
may have been used by the Company. Although management believes that
the assumptions made by the Company and the expectations represented by
such information are reasonable, there can be no assurance that the
forward-looking information will prove to be accurate.
Forward-looking information involves known and unknown risks,
uncertainties, and other factors which may cause the actual results,
performance or achievements of the Company to be materially different
from any anticipated future results, performance or achievements
expressed or implied by such forward-looking information. Such factors
include, among others, the actual market price of gold, the actual
results of current exploration, the actual results of future
exploration, changes in project parameters as plans continue to be
evaluated, as well as those factors disclosed in the Company's publicly
filed documents. The Company believes that the assumptions and
expectations reflected in the forward-looking information are
reasonable. Assumptions have been made regarding, among other things,
the Company's ability to carry on its exploration and development
activities, the timely receipt of required approvals, the price of
gold, the ability of the Company to operate in a safe, efficient and
effective manner and the ability of the Company to obtain financing as
and when required and on reasonable terms. Readers should not place
undue reliance on forward-looking information. Perseus does not
undertake to update any forward-looking information, except in
accordance with applicable securities laws.
Table 1: EGM, Abnabna-Fobinso, Measured and Indicated Mineral Resources
(>0.8g/t Au(1))
|
|
|
|
Deposit | Measured Resources | Indicated Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
0.6
|
1.5
|
26,000
|
0.4
|
1.4
|
18,000
|
1.0
|
1.4
|
44,000
|
Transition
|
0.5
|
1.5
|
24,000
|
0.3
|
1.4
|
15,000
|
0.8
|
1.5
|
39,000
|
Primary
|
28.6
|
1.5
|
1,373,000
|
8.4
|
1.3
|
349,000
|
37.0
|
1.5
|
1,722,000
|
Total(2) | 29.6 | 1.5 | 1,423,000 | 9.1 | 1.3 | 382,000 | 37.8 | 1.5 | 1,805,000 |
Notes
1 Reported at 0.8g/t cut-off above -100mRL and 1.2g/t below
-100mRL.
2 Rounding applied to totals.
3 Excludes ROM ore stockpiles
Table 2: EGM, Abnabna-Fobinso, Measured and Indicated Mineral Resources
(>0.4g/t Au(1))
|
|
|
|
Deposit | Measured Resources | Indicated Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
0.9
|
1.1
|
34,000
|
0.9
|
1.0
|
27,000
|
1.8
|
1.0
|
60,000
|
Transition
|
0.8
|
1.2
|
30,000
|
0.6
|
1.0
|
21,000
|
1.4
|
1.1
|
51,000
|
Primary
|
47.7
|
1.2
|
1,786,000
|
21.7
|
0.9
|
618,000
|
69.3
|
1.1
|
2,404,000
|
Total(2) | 49.4 | 1.2 | 1,850,000 | 23.2 | 0.9 | 666,000 | 72.6 | 1.1 | 2,515,000 |
Notes
1 Reported at 0.4g/t cut-off above -100mRL and 0.8g/t below -100mRL.
2 Rounding applied to totals.
3 Excludes ROM ore stockpiles
Table 3: EGM, Abnabna-Fobinso, Inferred Mineral Resources
|
|
|
|
Deposit | >0.8g/t Au(1) | 0.4g/t-0.8g/t Au(2) | Total Inferred Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
0.04
|
1.3
|
2,000
|
0.03
|
0.7
|
800
|
0.08
|
1.0
|
3,000
|
Transition
|
0.03
|
1.2
|
1,000
|
0.02
|
0.6
|
300
|
0.05
|
1.0
|
2,000
|
Primary
|
3.0
|
1.3
|
124,000
|
8.0
|
0.9
|
228,000
|
11.0
|
1.0
|
358,000
|
Total(3) | 3.1 | 1.3 | 127,000 | 8.0 | 0.9 | 229,000 | 11.1 | 1.0 | 362,000 |
Notes
1 Reported at 0.8g/t cut-off above -100mRL and 1.2g/t below -100mRL.
2 Reported at 0.4-0.8g/t cut-off above -100mRL and 0.8-1.2g/t below
-100mRL.
3 Rounding applied to totals.
Table 4: EGM, Fetish, Measured and Indicated Mineral Resources (>0.8g/t
Au)
|
|
|
|
Deposit | Measured Resources | Indicated Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
0.01
|
1.1
|
200
|
0.1
|
1.1
|
4,000
|
0.1
|
1.1
|
4,000
|
Transition
|
0.05
|
1.0
|
2,000
|
0.6
|
1.4
|
27,000
|
0.7
|
1.4
|
29,000
|
Primary
|
4.3
|
1.2
|
167,000
|
11.3
|
1.4
|
518,000
|
15.6
|
1.4
|
685,000
|
Total(1) | 4.4 | 1.2 | 481,000 | 12.0 | 1.4 | 549,000 | 16.4 | 1.4 | 718,000 |
Notes
1 Rounding applied to totals.
Table 5: EGM, Fetish, Measured and Indicated Mineral Resources (>0.4g/t
Au)
|
|
|
|
Deposit | Measured Resources | Indicated Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
0.01
|
0.9
|
300
|
0.2
|
0.9
|
6,000
|
0.2
|
0.9
|
6,000
|
Transition
|
0.1
|
0.8
|
3,000
|
1.0
|
1.1
|
35,000
|
1.1
|
1.1
|
37,000
|
Primary
|
8.7
|
0.9
|
252,000
|
19.4
|
1.1
|
677,000
|
28.1
|
1.0
|
929,000
|
Total(1) | 8.8 | 0.9 | 255,000 | 20.6 | 1.1 | 717,000 | 29.4 | 1.0 | 972,000 |
Notes
1 Rounding applied to totals.
Table 6: EGM, Fetish, Inferred Mineral Resources
|
|
|
|
Deposit | >0.8g/t Au(1) | 0.4g/t-0.8g/t Au(2) | Total Inferred Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
0.03
|
1.8
|
2,000
|
|
|
|
0.03
|
1.8
|
2,000
|
Transition
|
0.1
|
2.2
|
8,000
|
|
|
|
0.1
|
2.2
|
8,000
|
Primary
|
5.1
|
1.2
|
194,000
|
2.2
|
0.6
|
45,000
|
7.3
|
1.0
|
238,000
|
Total(1) | 5.3 | 1.2 | 204,000 | 2.2 | 0.6 | 45,000 | 7.5 | 1.0 | 248,000 |
Notes
1 Rounding applied to totals.
Table 7: EGM, Chirawewa, Measured and Indicated Mineral Resources
(>0.8g/t Au)
|
|
|
|
Deposit | Measured Resources | Indicated Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
|
|
|
0.03
|
1.0
|
800
|
0.03
|
1.0
|
800
|
Transition
|
|
|
|
0.7
|
1.3
|
32,000
|
0.7
|
1.3
|
32,000
|
Primary
|
|
|
|
2.2
|
1.5
|
105,000
|
2.2
|
1.5
|
105,000
|
Total(1) |
|
|
| 3.0 | 1.4 | 137,000 | 3.0 | 1.4 | 137,000 |
Notes
1 Rounding applied to totals
Table 8: EGM, Chirawewa, Measured and Indicated Mineral Resources
(>0.4g/t Au)
|
|
|
|
Deposit | Measured Resources | Indicated Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
|
|
|
0.03
|
0.9
|
900
|
0.03
|
0.9
|
900
|
Transition
|
|
|
|
1.1
|
1.1
|
38,000
|
1.1
|
1.1
|
38,000
|
Primary
|
|
|
|
3.4
|
1.2
|
128,000
|
3.4
|
1.2
|
128,000
|
Total(1) |
|
|
| 4.5 | 1.1 | 167,000 | 4.5 | 1.1 | 167,000 |
Notes
1 Rounding applied to totals.
Table 9: EGM, Chirawewa, Inferred Mineral Resources
|
|
|
|
Deposit | >0.8g/t Au(1) | 0.4g/t-0.8g/t Au(2) | Total Inferred Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide
|
0.01
|
1.1
|
300
|
0.02
|
0.5
|
400
|
0.03
|
0.7
|
700
|
Transition
|
0.2
|
1.4
|
8000
|
0.4
|
0.5
|
6,000
|
0.6
|
0.8
|
15,000
|
Primary
|
3.6
|
1.3
|
148,000
|
4.5
|
0.6
|
86,000
|
8.2
|
0.9
|
233,000
|
Total(1) | 3.8 | 1.3 | 157,000 | 4.9 | 0.6 | 92,000 | 8.7 | 0.9 | 249,000 |
Notes
1 Rounding applied to totals
Table 10: EGM, Botiksi, Measured and Indicated Mineral Resources
(>0.8g/t Au)
|
|
|
|
Deposit | Measured Resources | Indicated Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide & Laterite
|
|
|
|
0.02
|
1.7
|
1,000
|
0.02
|
1.7
|
1,000
|
Transition
|
|
|
|
0.3
|
2.2
|
23,000
|
0.3
|
2.2
|
23,000
|
Primary
|
|
|
|
2.2
|
2.6
|
186,000
|
2.2
|
2.6
|
186,000
|
Total(1) |
|
|
| 2.6 | 2.6 | 210,000 | 2.6 | 2.6 | 210,000 |
Notes
1 Rounding applied to totals
Table 11: EGM, Bokitsi, Measured and Indicated Mineral Resources
(>0.4g/t Au)
|
|
|
|
Deposit | Measured Resources | Indicated
Resources | Total Measured and Indicated Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide & Laterite
|
|
|
|
0.02
|
1.6
|
1,000
|
0.02
|
1.6
|
1,000
|
Transition
|
|
|
|
0.4
|
2.0
|
24,000
|
0.4
|
2.0
|
24,000
|
Primary
|
|
|
|
2.2
|
2.6
|
186,000
|
2.2
|
2.6
|
186,000
|
Total(1) |
|
|
| 2.6 | 2.5 | 212,000 | 2.6 | 2.5 | 212,000 |
Notes
1 Rounding applied to totals.
Table 12: EGM, Bokitsi, Inferred Mineral Resources
|
|
|
|
Deposit | >0.8g/t Au(1) | 0.4g/t-0.8g/t Au(2) | Total Inferred Resources |
Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces | Tonnes Mt | Au g/t | Au Ounces |
Oxide & Laterite
|
0.02
|
1.3
|
800
|
0.04
|
0.6
|
700
|
0.06
|
0.8
|
2,000
|
Transition
|
0.3
|
1.8
|
17,000
|
0.3
|
0.6
|
5,000
|
0.6
|
1.2
|
22,000
|
Primary
|
1.0
|
2.0
|
66,000
|
|
|
|
1.0
|
2.0
|
66,000
|
Total(1) | 1.3 | 2.0 | 83,000 | 0.3 | 0.6 | 6,000 | 1.6 | 1.7 | 89,000 |
Notes
1 Rounding applied to totals
Table 13: Total Mineral Resources (Including Reserves)
Deposit (cut-off g/t Au) | Measured | Indicated | Inferred
|
Tonnes (million) | g/t Au | Ounces Au (,000) | Tonnes (million) | g/t Au | Ounces Au (,000) | Tonnes (million) | g/t Au | Ounces Au (,000) |
EGM-(previously CAGP) (1) >0.8g/t |
41.0
|
1.5
|
2,057
|
41.7
|
1.5
|
1,944
|
24.8
|
1.4
|
1,095
|
EGM (1) 0.4g/t - 0.8g/t |
25.5
|
0.7
|
541
|
35.7
|
0.6
|
731
|
28.8
|
0.7
|
663
|
Grumesa (2) >0.4 (3) |
|
|
|
25.1
|
0.6
|
471
|
16.4
|
0.5
|
247
|
Tengrela(4) >1.0g/t |
0.9
|
3.2
|
90
|
9.1
|
2.5
|
706
|
3.3
|
1.7
|
171
|
Tengrela(4) 0.5-1.0g/t |
0.04
|
0.8
|
1
|
5.5
|
0.8
|
134
|
3.6
|
0.7
|
86
|
Totals >0.8g/t (1.0g/t Tengrela) | 41.9 | 1.6 | 2,147 | 50.8 | 1.6 | 2,650 | 28.1 | 1.4 | 1,266 |
Totals >0.4g/t (0.5g/t Tengrela) | 67.4 | 1.2 | 2,689 | 117.1 | 1.1 | 3,986 | 76.9 | 0.9 | 2,262 |
Notes
1 Last updated in December 2011.
2 Last updated in December 2010.
3 Primary reported above a 0.4g/t Au cut-off, oxide/transition
report above a 0.2g/t Au cut-off.
4 Last updated in November 2010.
5 The Company holds 90% of EGM (formally CAGP), 90% of Grumesa and
85% of Tengrela after allowing for Government equity at mining stage.
Table 14: Total Mineral Reserves
Deposit | Proven | Probable | Total |
Tonnes (million) | g/t Au | Ounces Au (,000) | Tonnes (million) | g/t Au | Ounces Au (,000) | Tonnes (million) | g/t Au | Ounces Au (,000) |
EGM >0.4g/t (1,2) |
47.7
|
1.3
|
1,974
|
39.2
|
1.0
|
1,300
|
86.9
|
1.2
|
3,273
|
Tengrela >0.55g/t (3) |
|
|
|
9.7
|
2.1
|
657
|
9.7
|
2.1
|
657
|
Total | 47.7 | 1.3 | 1,974 | 48.9 | 1.3 | 1,957 | 96.6 | 1.3 | 3,930 |
Notes
1 >0.4g/t Au cut-off for Abnabna-Fobinso, >0.5g/t Au cut-off for all
other deposits.
2 Last updated in December 2010.
3 Last updated in November 2010.
APPENDIX 1:
Notes on the Abnabna-Fobinso, Fetish, Chirawewa and Bokitsi Mineral
Estimates, EGM
1)
|
The Mineral Resource estimate for the Abnabna-Fobinso, Fetish,
Chirawewa and Bokitsi gold deposits of the Edikan Gold Mine ("EGM") was
completed in December 2011 by Runge Ltd for Perseus Mining Ltd.
|
2)
|
The deposits are located within altered Lower Proterozoic Biriman
(2.17-2.18 billion years) granitoid and meta-sediments. The granitoid
hosted deposits range from 200 to 400m strike and 10 to 150m in width.
The granitoids appear to be pervasively mineralised (0.1g/t to 2g/t)
with higher grades associated with sheeted quartz veining.
Meta-sediment hosted mineralisation is associated veining within 5m to
50m wide shear zones.
|
3)
|
The drill database for Abnabna-Fobinso contains 918 Reverse Circulation
("RC") drill holes totalling 70,040m, 681 diamond drill holes totalling
149,243m and 2,476 Grade Control ("GC") drill holes totalling 51,994m.
Sample recovery is considered to have been to industry standard for RC,
diamond cored and GC drilling.
|
4)
|
The drill database for Fetish contains 207 Reverse Circulation ("RC")
drill holes totalling 14,716m and 237 diamond drill holes totalling
61,916m. Sample recovery is considered to have been to industry
standard for both RC and diamond cored drilling.
|
5)
|
The drill database for Chirawewa contains 278 Reverse Circulation ("RC")
drill holes totalling 22,728m and 69 diamond drill holes totalling
11,919m. Sample recovery is considered to have been to industry
standard for both RC and diamond cored drilling.
|
6)
|
The drill database for Bokitsi contains 98 RC drill holes totalling
9,016m and 48 diamond drill holes totalling 6,907m. Sample recovery is
considered to have been to industry standard for both RC and diamond
cored drilling.
|
7)
|
Pre 2006 RC drilling was routinely analysed for gold using a 0.5kg 24hr
bulk cyanide leach method. 2006 to 2007 RC drill samples were analysed
by 1kg 24hr bulk cyanide leach method with the tails of all samples
with assays greater than 0.5g/t being fire assayed. Only the recovered
grades of the bulk cyanide leach method were used in the resource
estimate. 2006 to 2008 diamond and 2008 RC drill samples were analysed
by 50g fire assay method. Standards, spikes, blanks and repeat samples
have been randomly submitted during all drilling programs. Sufficient
QAQC and data validation has been carried out to verify the integrity
of the assay data.
|
8)
|
The relative position of all drill-hole collars is related back to the
original mine grid using a total station theodolite. Holes are
considered to be accurate to within 1m horizontally and 0.5m
vertically. The surface topography of the deposits used for resource
modelling was generated using lattice gridding of survey data points
and is considered to be sufficiently accurate for the generation of an
Indicated and Inferred mineral resource estimate. For Abnabna-Fobinso
the November 2011 end of month mine survey was used. Down hole
surveying is routinely used in the deeper percussion drilling and
diamond core holes. The down-hole sample location data for the all
zones is considered adequate to allow for the estimation of Measured
mineral resources.
|
9)
|
The Abnabna-Fobinso, Fetish, Chirawewa and Bokitsi deposits have been
partially exploited by mining.
|
10)
|
Drilling was carried out along north-south fences which were nominally
spaced at 10m to 40m grid east intervals and at 10m to 40m centres.
All drill-holes were inclined at between 25° and 60° at grid east and
west azimuths. The gold value used for plotting and grade estimation
was the first bulk cyanide leach determination or, in its absence, the
first fire assay determination presented by the laboratory.
|
11)
|
Bulk densities were adopted from the CAGP database comprising 956 bulk
density determinations within the mineralised envelope recently
conducted by Perseus.
|
12)
|
Wireframes were constructed using cross sectional interpretations based
on geology or a 0.2g/t Au cut-off grade.
|
13)
|
Samples within the wireframes were composited to 1.0m intervals in the
Fetish and Chirawewa deposits. Various high grade cuts of between 10
to 25 g/t Au for Fetish and 10 to 20 g/t Au for Chirawewa were applied.
|
14)
|
Samples within the wireframes were composited to 2.0m intervals in the
Abnabna / AF-GAP / Fobinso deposits. Various high grade cuts of between
10 to 30g/t Au were applied.
|
15)
|
Samples within the wireframes were composited to 2.0m intervals in the
Bokitsi deposits. Various high grade cuts of 6g/t Au (Laterite) and
50g/t Au (Shear Zones) were applied.
|
16)
|
Surpac block models were used for the estimate with block sizes
determined from drill hole spacing and lode geometry. Sub cells were
used to ensure accurate volume representation of the mineralised lodes.
|
17)
|
Ordinary Kriging (OK) Grade Estimation at Fetish:- A first pass radius
of between 100m to 110m was used. This was increased to 200m for the
second pass. A third and final pass was used on the blocks not filled
in the first two passes and used a search radii of 400m. Almost 99% of
blocks filled in the first two passes.
|
18)
|
Ordinary Kriging (OK) Grade Estimation at Chirawewa:- A first pass
radius of between 50m to 70m was used. This was increased to 100m and
140m in the second pass. A third and fourth pass was used in the blocks
not filled in the first twp passes and used a search radii up to 400m.
Almost 98% of blocks filled in the first two passes.
|
19)
|
Ordinary Kriging (OK) Grade Estimation at Abnabna / AF-GAP / Fobinso:- A
first pass radius of between 60m to 80m was used. A second pass radius
up to 350m was used on the blocks not filled in the first pass and
filled remaining blocks. Almost 60% of blocks were filled in the first
pass.
|
20)
|
The Mineral Resource was classified as Measured, Indicated or Inferred
based on the quality of the drilling data and the demonstrated
geological and grade continuity defined by recent drill programs.
|
<p> To discuss any aspect of this announcement, please contact:<br/> Mark Calderwood at telephone +61 8 9240 6344 or email <a href="mailto:calderwoodm@perseusmining.com">calderwoodm@perseusmining.com</a><br/> Nathan Ryan at telephone +0420 582 887 or email <a href="mailto:nathan.ryan@nwrcommunications.com">nathan.ryan@nwrcommunications.com.au</a><br/> Rebecca Greco at telephone +1 416 822 6483 or email <a href="mailto:fighouse@yahoo.com">fighouse@yahoo.com</a> (Toronto) </p>