10 July
2024
AIM:
AAU
1.2Moz IN-PIT OPTIMISED DOKWE
GOLD RESOURCE
In-pit Resources Increased by
16%
Ariana Resources plc ("Ariana" or
"the Company"), the AIM-listed mineral exploration and development
company with gold project interests in Africa and Europe, is
pleased to announce the completion of revised in-pit JORC 2012
Measured and Indicated Resources for both Dokwe North and Dokwe
Central, which contain a combined 1.2Moz of gold. Ariana recently
acquired 100% of the Dokwe Project ("Dokwe") in an all-share merger
with Rockover Holdings Ltd ("Rockover")
Highlights:
·
Recent Mineral Resource Estimate ("MRE") and pit
optimisations have enabled the examination of an expanded mining
scenario of 75,000 to 100,000 ounces production over 10 to 15 years
as part of the Definitive Feasibility Study of Dokwe.
·
The global MRE remains unchanged but revised pit
optimisations have increased the in-pit resources by 16%; in-pit
JORC 2012 Measured and Indicated Resources now 29.6Mt @ 1.33g/t Au
for 1.2Moz of gold.
·
Latest results indicate that both the
Pre-Feasibility Study ("PFS") proposed 60,000oz per annum
production rate and a 12-year mine life, could be increased
significantly.
To read a pdf version of the announcement, please click here:
http://www.rns-pdf.londonstockexchange.com/rns/7553V_1-2024-7-9.pdf
Dr.
Kerim Sener, Managing Director, commented:
"Yet again we have demonstrated the considerable value
presented by the Dokwe Project. The latest pit optimisations run at
higher gold price scenarios underscore the opportunity for over
1Moz of gold to be mined from two open pits at North and Central.
This provides an exceptional platform for the Company as we proceed
to take our 100%-owned Dokwe Project through to the feasibility
stage.
"Strategically, we are considering the development of the
Dokwe Project in two stages, with Dokwe Central potentially being
mined during the early years of the operation and Dokwe North
taking over in future years. With in-pit Resources now exceeding
1.2Moz of gold, we see a pathway to exploring the opportunity to
take production to 75,000 to 100,000 ounces per annum over a 10 to
15-year mine life.
"Coupled with this, we see a significant amount of exploration
upside across the project and in the region. Existing drilling has
defined areas worthy of follow-up at both Dokwe North and Central.
In addition, several as yet untested gold geochemical anomalies
remain to be drilled and extensions of known structures further
explored. We envisage the opportunity to increase Resources across
the Dokwe Project and to define additional Reserves to potentially
increase the mine life. We are currently working towards completing
a further revision of the Dokwe PFS in the next few months, to
enable the definition of our revised Reserves. This is being
undertaken as an interim step ahead of commencing a Definitive
Feasibility Study of the Project."
This announcement contains inside information for the purposes
of Article 7 of EU Regulation 596/2014.
About the Dokwe Project
The Dokwe North and Dokwe Central
gold deposits are located 2km apart ("Dokwe Project") and are
situated in the Tsholotsho District 110km WNW of Bulawayo, Zimbabwe
(Figure 1). The Dokwe
Project was discovered utilising innovative soil geochemistry
capable of detecting mineralisation beneath cover, followed by
drill-testing of the geochemical anomalies in 2004.
It represents the largest undeveloped gold project
in Zimbabwe. Ariana owns 100% of Dokwe following the all-share
merger with Rockover Holdings Limited.
Since 2004, the Project has
undergone ten phases of drilling for over 42,000 metres, three
iterations of Mineral Resource Estimation ("MRE") and several
geotechnical studies. In March 2022, an independent PFS for Dokwe
North was completed
by Minxcon (Pty) Ltd in South Africa ("Minxcon"). In June 2022, an independent optimisation
study for Dokwe Central was completed by UK-based Axe Valley Mining
Consultants Limited.
Figure 1: Summary map of Dokwe
North and Central showing the outline of the designed
pre-feasibility pit for Dokwe North and the optimised pit, not
included in the pre-feasibility, for Dokwe Central (both in
yellow). The 2024 optimisation pits are based on Measured and
Indicated Resources only, and are shown in blue. The 2024 MRE
domain outlines are shaded in pink. Ariana's 2023-2024 due
diligence drilling collars are also shown in magenta.
Summary of Recent Activities
·
November 2023 to
April 2024; initiation of a detailed geotechnical
Due Diligence ("DD") review of the Dokwe North and Dokwe Central
deposits. Initial results of this work were
announced in April (AIM:
25 April 2024).
·
May 2024 (AIM:
09 May 2024); Ariana announced
revisions to the Minxcon 2022 Dokwe North PFS, which primarily
focused on a financial model update on the Reserves at Dokwe North
using a revised gold price of US$2,000/oz.
·
June 2024 (AIM:
6 June 2024); the Company announced the
completion of the DD review work in which 1,222 metres of diamond
drilling was completed for four holes.
·
June 2024 (AIM:
13 June 2024); the Company provided an
update on the Dokwe Project Mineral Resources Estimate (MRE) based
on the DD drilling results, the measurement of over 21,000 pXRF
readings from historic drill core, and new geological modelling
(Table 1).
Table 1: Summary of the Dokwe
Project JORC 2012 compliant Mineral Resource Estimate (Global
Resource), based on 141 drill holes (dated 13 June 2024). Reporting
is based on a 0.3g/t Au cut-off grade for both Dokwe North and
Dokwe Central. Figures in the table may not sum precisely due to
rounding.
Classification
|
Tonnage
(t)
|
Grade
|
Metal
Content
|
Au
(g/t)
|
Au
(oz)
|
Measured
|
13,757,000
|
1.35
|
599,000
|
Indicated
|
20,137,000
|
1.15
|
742,000
|
Inferred
|
21,994,000
|
0.69
|
490,000
|
Global
Total
|
55,888,000
|
1.02
|
1,831,000
|
Optimisation Study Parameters
The 2024 MRE at a 0.3g/t reporting
cut-off was previously constrained by the 2022 Dokwe North PFS
designed pit and Dokwe Central 2022 optimisation pit, which
captured 24.7Mt for 1.1Moz of Measured and Indicated Resources at
an average in-situ grade of 1.38g/t Au (Table 3).
The work presented in this
announcement discusses results from a revised open-pit optimisation
study, applied to the 2024 MRE updates at the 0.3g/t reporting
cut-off grade for both Dokwe North and Dokwe Central. The open pit
optimisation work was completed by Hovhannes Hovhannisyan, an
independent mining consultant to Ariana Resources plc, using
Datamine NPV Scheduler (NPVS) software, which is regarded as the
industry standard for mine optimisation studies.
To determine mining inputs into the
optimisation base-case run, the study assumed conventional drill,
blast and haul methods. Input costs were guided by the PFS
(Table 2). The Mineral
Inventory for Dokwe Central has been estimated using similar mine
optimisation and mine design parameters to those established in the
Dokwe North PFS. The rock types at Dokwe Central differ from Dokwe
North and their geotechnical properties are untested therefore a
more conservative pit slope has been assumed for Dokwe Central as
shown in Table 2. The
processing of ore from Dokwe Central is likely to take place at
Dokwe North, and mining contract services (Drill & Blast and
Load & Haul) can be shared between both operations.
Various inputs were tested for the
optimisations, with all producing similar pits although they
displayed expected sensitivities to altering input
parameters.
Table 2: Summary of key
modifying factor inputs for the base-case optimisation for both
Dokwe North and Dokwe Central.
Project
|
Parameter
|
Input
|
Dokwe
North
and
Dokwe Central
|
Overall Slope Angle (Dokwe
North)
|
50-55
Degrees
|
Overall Slope Angle (Dokwe
Central)
|
45
Degrees
|
Reference Mining Cost
(Ore)
|
US$3.2/t
|
Reference Mining Cost
(Waste)
|
US$1.8/t
|
G&A Processing
|
US$20.9
|
Mining Losses
|
5%
|
Mining Dilution
|
5%
|
Sell Price Gold
|
US$2,000/oz
|
Sell Costs
|
1.2%
(US$0.77/g)
|
Discount Rate
|
7.50%
|
Mill Constraint
|
1.5Mpta
|
|
Processing Recovery
|
89%
|
Results
The new 2024 optimisation pits, when
applied to the 2024 MRE, demonstrate a tonnage increase of 20% (for
5.0Mt) and an overall gold ounce increase of 16% (for 176,000 oz)
(Table 3). These increases
have largely come from:
1) An overall increase in the
base-case gold selling price per ounce from US$1,650 (2022) to
US$2,000 (2024), has resulted in larger optimised pits being
defined, thereby capturing more of the Resources.
2) The new pits are optimised
on the 2024 MRE which incorporated improvements over previous
estimates (and associated optimisations) with a better
understanding of the geology, the addition of four new drill holes,
and more robust mineral resource modelling.
The gold captured by the new
optimisation at Dokwe North represents 98% of the additional tonnes
(4.9Mt) and 93% of the additional gold ounces (164,000oz)
(Figure 2). The increase at
Dokwe Central has contributed 2% (0.09Mt) of the additional tonnage
and 7% of the gold ounces (12,000oz) (Figure 3).
Table 3: Summary of the Dokwe
2024 Mineral Resources captured by 1) the 2022 PFS designed pit for
Dokwe North, and the 2022 optimisation pit for Dokwe Central, and
2) the 2024 Mineral Resources captured by the 2024 optimisation
work. The figures summarised below represent in-situ Resources at
the MRE cut-off grade of 0.3g/t without the application of
modifying factors as demonstrated in Table 2; the revised economic
cut-off grade defined by the optimisation is 0.44g/t.
Project
Area
|
Pit
Status
|
Classification
|
Tonnage
(t)
|
Grade
|
Metal
Content
|
Au
(g/t)
|
Au
(oz)
|
Dokwe
North
|
Previous
- In Pit 2022 PFS Design applied to 2024 MRE
|
Measured
|
13,296,000
|
1.37
|
587,000
|
Indicated
|
10,141,000
|
1.36
|
443,000
|
Meas & Ind Sub
Total
|
23,437,000
|
1.37
|
1,030,000
|
Inferred
|
1,693,000
|
0.86
|
47,000
|
Sub Total
|
25,130,000
|
1.33
|
1,077,000
|
|
Revised -
In Pit 2024 Optimisation Pit applied to 2024 MRE
|
Measured
|
13,586,000
|
1.36
|
595,000
|
Indicated
|
14,751,000
|
1.26
|
599,000
|
Meas & Ind Sub
Total
|
28,337,000
|
1.31
|
1,194,000
|
Inferred
|
1,546,000
|
0.82
|
41,000
|
Sub Total
|
29,726,000
|
1.28
|
1,226,000
|
|
Dokwe
Central
|
Previous
- In Pit 2022 Optimisation applied to 2024 MRE
|
Indicated
|
1,250,000
|
1.54
|
62,000
|
|
Revised -
In Pit 2024 Optimisation applied to 2024 MRE
|
Indicated
|
1,349,000
|
1.71
|
74,000
|
|
TOTAL
|
Previous
- 2022 Pits
|
All
|
26,380,000
|
1.34
|
1,139,000
|
Revised - 2024 Pits
|
All
|
31,233,035
|
1.30
|
1,309,007
|
Revised 2024
Pits
|
Meas & Ind
Only
|
29,686,000
|
1.33
|
1,268,000
|
The results discussed here only take
into account Measured and Indicated Resources, with Inferred
Resources not being included as an optimisation input. However, it
is worth noting that 1.5Mt at 0.82g/t Au for 41,000 ounces of gold
currently categorised as Inferred Resources at Dokwe North are
captured within the defined optimisation pit (the Inferred
Resources captured represent approximately 3% of the total in-pit
resource for Dokwe North). It is possible that these additional
resources could be included within the Dokwe Reserves after
additional drilling is completed.
Furthermore, between 0.1 g/t Au and
the 0.3g/t Au reporting cut-off for the MRE, there is approximately
23.6Mt of material within the optimised pit at Dokwe North, with an
average grade of 0.18g/t Au for a further 135,000 ounces of gold.
This material is currently classified as "waste" but may be of
future economic interest. The indicative strip ratio from the Dokwe
North optimisation is 6:1 and for Dokwe Central it is
12:1.
Figure 2: Oblique view looking
north over the Dokwe North pit. The 2022 PFS-designed pit is
presented in grey. The 2024 optimisation pit is presented in
orange. Both pits are broadly similar in shape and in volume. As
expected, the 2024 optimisation pit is somewhat larger, as it
utilises a high base-case gold price of US$2,000/oz.
Figure 3: (Right) North-south
section through the 3D model of Dokwe
Central, showing the block model and the historic optimised pit
(grey), and the new 2024 optimisation pit (blue). (Left) Oblique view looking west over
the Dokwe Central deposit. The new 2024 optimisation pit is only
slightly larger in some directions compared to the 2011
optimisation pit. Both pits capture a similar volume of Indicated
Resources.
Conclusions
The positive scoping-level results
of the pit optimisations reported in this work indicate the project
is robust to gold price fluctuations and variations from key
base-case parameters. The 2022 Minxcon PFS identified a mineable
ore Reserve of 0.8Moz at an average grade of 1.36g/t. The increase
in gold captured within the pit in this study suggests that the
Reserve could be expanded with the advancement of further technical
studies.
The 2022 PFS advocated a production
rate of 60,000oz per annum over a 12-year mine life. The
encouraging results herein indicate production could be increased
and mine life extended, and a Definitive Feasibility Study (DFS) on
Dokwe is expected to be based on an annual production scenario of
75,000 to 100,000 ounces of gold over a 10 to 15-year mine
life.
Ariana Resources plc
|
Tel: +44 (0) 20 7407 3616
|
Michael de Villiers,
Chairman
|
|
Kerim Sener, Managing
Director
|
|
Beaumont Cornish Limited (Nominated Adviser)
|
Tel: +44 (0) 20 7628 3396
|
Roland Cornish / Felicity
Geidt
|
|
Panmure Liberum (Joint Broker)
|
Tel: +44 (0) 20 7886 2500
|
Kieron Hodgson / Atholl Tweedie /
Rauf Munir
|
|
WHIreland Limited (Joint Broker)
Harry Ansell / Katy Mitchell /
George Krokos
Yellow Jersey PR Limited (Financial PR)
|
Tel: +44 (0) 207 2201666
Tel: +44 (0) 7983 521 488
|
Dom Barretto / Shivantha Thambirajah
/
Bessie Elliot
|
arianaresources@yellowjerseypr.com
|
Beaumont Cornish Limited ("Beaumont Cornish") is the Company's
Nominated Adviser and is authorised and regulated by the FCA.
Beaumont Cornish's responsibilities as the Company's Nominated
Adviser, including a responsibility to advise and guide the Company
on its responsibilities under the AIM Rules for Companies and AIM
Rules for Nominated Advisers, are owed solely to the London Stock
Exchange. Beaumont Cornish is not acting for and will not be
responsible to any other persons for providing protections afforded
to customers of Beaumont Cornish nor for advising them in relation
to the proposed arrangements described in this announcement or any
matter referred to in it.
Editors' Note:
The information that relates to
Exploration Results is based upon information compiled by Mr. Zack
van Coller BSc (Hons), Targeting Group Leader, Ariana Resources
plc. Mr. van Coller is a Fellow of The Geological Society of
London, and has sufficient experience which is relevant to the
style of mineralisation and type of deposits under consideration
and to the activity which he is undertaking to qualify as a
Competent Person as defined by the 2012 edition of the Australasian
Code for the Reporting of Exploration Results, Mineral Resources
and Ore Reserves (JORC Code). Mr. van Coller has over 10 years of
relevant experience in the Technical Assessments of Mineral
Properties. Mr. van Coller 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 exploration results is based on information
compiled by Dr. Kerim Sener BSc (Hons), MSc, PhD, Managing Director
of Ariana Resources plc. Dr. Sener is a Fellow of The Geological
Society of London and a Member of The Institute of Materials,
Minerals and Mining and has sufficient experience relevant to the
styles of mineralisation and type of deposit under consideration
and to the activity that has been undertaken to qualify as a
Competent Person as defined by the 2012 edition of the Australasian
Code for the Reporting of Exploration Results, Mineral Resources
and Ore Reserves (JORC Code) and under the AIM Rules - Note for
Mining and Oil & Gas Companies. Dr. Sener consents to the
inclusion in the report of the matters based on his information in
the form and context in which it appears.
About Ariana Resources:
Ariana is an AIM-listed mineral
exploration and development company with an exceptional
track-record of creating value for its shareholders through its
interests in active mining projects and investments in exploration
companies. Its current interests include a major gold development
project in Zimbabwe, gold production in Türkiye and copper-gold
exploration and development projects in Cyprus and
Kosovo.
Ariana owns 100% of the Dokwe Gold
Project ("Dokwe") in Zimbabwe. Dokwe is made up of the Dokwe North
and Dokwe Central gold deposits which are located in the Tsholotsho
District near the city of Bulawayo. The deposits have a combined
JORC Measured, Indicated and Inferred Resource of over 1.83 million
ounces of gold (as at June 2024) and the project represents the
largest undeveloped gold project in Zimbabwe.
The Company holds 23.5% interest
in Zenit
Madencilik San. ve Tic. A.S. a joint venture with Ozaltin
Holding A.S. and Proccea Construction Co. in Türkiye which contains
a depleted total of c. 2.2 million ounces gold equivalent (as at
March 2024, using a price ratio of 90 Ag to 1 Au). The joint
venture comprises the Kiziltepe Mine and the Tavsan and Salinbas
projects.
The Kiziltepe Gold-Silver
Mine is
located in western Türkiye and contains a depleted JORC Measured,
Indicated and Inferred Resource of 171,700 ounces gold and 3.3
million ounces silver (as at March 2024). The mine has been in
profitable production since 2017 and has been producing at an
average rate of c.22,000 ounces of gold per annum. A Net Smelter
Return ("NSR") royalty of 2.5% on production is being paid to
Franco-Nevada Corporation.
The Tavsan Gold
Mine is
located in western Türkiye and contains a JORC Measured, Indicated
and Inferred Resource of 311,000 ounces gold and 1.1 million ounces
silver (as at March 2024). Following the approval of its
Environmental Impact Assessment and associated permitting, Tavsan
is being developed as the second gold mining operation in Türkiye
and is currently in construction. A NSR royalty of up to 2% on
future production is payable to Sandstorm Gold.
The Salinbas Gold
Project is
located in north-eastern Türkiye and contains a JORC Measured,
Indicated and Inferred Resource of 1.5 million ounces of gold (as
at July 2020). It is located within the multi-million ounce Artvin
Goldfield, which contains the "Hot Gold Corridor" comprising several
significant gold- copper projects including the 4 million ounce Hot
Maden project, which lies 16km to the south of Salinbas. A NSR
royalty of up to 2% on future production is payable to Eldorado
Gold Corporation.
Ariana owns 75% of
UK-registered Western Tethyan Resources Ltd ("WTR"), which operates across
south-eastern Europe and is based in Pristina, Republic of Kosovo.
The company is targeting its exploration on major copper-gold
deposits across the porphyry-epithermal transition. WTR is being
funded through a five-year Alliance Agreement with Newmont Mining
Corporation (www.newmont.com) and is separately earning-in to up to
85% of the Slivova Gold Project.
Ariana owns 61% of
UK-registered Venus Minerals PLC ("Venus") which is focused on
the exploration and development of copper-gold assets in Cyprus
which contain a combined JORC Indicated and Inferred Resource of
16.6Mt @ 0.45% to 0.80% copper (excluding additional gold, silver
and zinc.
Ariana owns several investments in
listed and private companies via its Australian subsidiary
Asgard Metals Pty. Ltd. ("Asgard"), which also provides technical input into the
various investee company exploration programmes. Investments have
been made in high-value potential, discovery-stage mineral
exploration companies located across the Eastern Hemisphere and
within easy reach of Ariana's operational hubs in Australia,
Türkiye, UK and Zimbabwe. Its most advanced interest is through a
5.5% holding of Panther Metals Limited (ASX: PNT).
Panmure Liberum Limited and WH
Ireland Limited are brokers to the Company and Beaumont Cornish
Limited is the Company's Nominated Adviser.
For further information on Ariana,
you are invited to visit the Company's website at
www.arianaresources.com.
Glossary of Technical Terms:
"Au" chemical symbol for
gold;
"DD" Due Diligence;
"g/t" grams per tonne;
"Inferred Mineral Resource" is that
part of a Mineral Resource for which quantity and grade (or
quality) are estimated on the basis of limited geological evidence
and sampling. Geological evidence is sufficient to imply but not
verify geological and grade (or quality) continuity. It is based on
exploration, sampling and testing information gathered through
appropriate techniques from locations such as outcrops, trenches,
pits, workings and drill holes. An Inferred Mineral Resource has a
lower level of confidence than that applying to an Indicated
Mineral Resource and must not be converted to an Ore Reserve. It is
reasonably expected that the majority of Inferred Mineral Resources
could be upgraded to Indicated Mineral Resources with continued
exploration;
"Indicated Mineral Resource" is that
part of a Mineral Resource for which quantity, grade (or quality),
densities, shape and physical characteristics are estimated with
sufficient confidence to allow the application of Modifying Factors
in sufficient detail to support mine planning and evaluation of the
economic viability of the deposit. Geological evidence is derived
from adequately detailed and reliable exploration, sampling and
testing gathered through appropriate techniques from locations such
as outcrops, trenches, pits, workings and drill holes, and is
sufficient to assume geological and grade (or quality) continuity
between points of observation where data and samples are gathered.
An Indicated Mineral Resource has a lower level of confidence than
that applying to a Measured Mineral Resource and may only be
converted to a Probable Ore Reserve;
"JORC" Joint Ore Reserves
Committee;
"k" thousand
"km" Kilometres;
"m" Metres;
"Measured Mineral Resource" is that
part of a Mineral Resource for which quantity, grade (or quality),
densities, shape, and physical characteristics are estimated with
confidence sufficient to allow the application of Modifying Factors
to support detailed mine planning and final evaluation of the
economic viability of the deposit. Geological evidence is derived
from detailed and reliable exploration, sampling and testing
gathered through appropriate techniques from locations such as
outcrops, trenches, pits, workings and drill holes, and is
sufficient to confirm geological and grade (or quality) continuity
between points of observation where data and samples are gathered.
A Measured Mineral Resource has a higher level of confidence than
that applying to either an Indicated Mineral Resource or an
Inferred Mineral Resource. It may be converted to a Proved Ore
Reserve or under certain circumstances to a Probable Ore
Reserve;
"MRE" Mineral Resource
Estimate;
"M" million
"oz" Troy ounces;
"pXRF" portable XRF;
"t" tonnes;
Ends.