REG - Kavango Resources - BOTS – Karakubis Technical Project Update

Kavango ResourcesAnnouncement

18/08/2025 07:00

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RNS Number : 6920V  Kavango Resources PLC  18 August 2025

18 August 2025

Kavango Resources

("Kavango" or "the Company")

BOTS - Karakubis Technical Project Update

Kavango Resources plc (LSE:KAV), the Southern Africa focussed metals
exploration company, is pleased to provide an update on its recently completed
ground geophysical programme at the Karakubis Copper Project ("Karakubis") in
Botswana's Kalahari Copper Belt ("KCB").

In collaboration with First Quantum Minerals (TSX:FM) ("First Quantum"),
Kavango gathered additional Controlled-Source Audio-frequency Magnetotelluric
("CSAMT") and Induced Polarization ("IP") data along a section line located
over First Quantum's deep (1,266.40m) mineral systems exploration hole.

This has provided Kavango with access to important drill core, across the key
target horizon for copper-silver mineralisation in the KCB. Such physical data
acts as a crucial control for interpretation of geophysical survey data to
identify higher-confidence drill targets.

Kavango's team has now spent six months improving its interpretation of
geophysical survey data taken over recent years at Karakubis to develop a
target model for discovery of potential Tier 1 copper-silver mineralisation.

The Company is encouraged by the results of this and is currently preparing
final targets for a follow-up drill programme later this year.

Ben Turney, Chief Executive Officer of Kavango Resources, commented:

"We are extremely pleased with how exploration of our Karakubis Copper
Project, part of our 6,200km(2) KCB mineral rights package, is progressing. We
are applying sophisticated targeting techniques that are delivering promising
results, as this recently completed comprehensive and integrated geophysical
programme show. The geophysics is allowing us to develop further our
understanding of previous drill results. New interpretations are developing
answers to a variety of key questions on the structural architecture and
potential for the southern margin of the KCB to host large Tier 1 deposits.
Results from this important phase of work will be used to refine our
geophysics driven targeting strategy.

Karakubis is an extremely large project that appears increasingly prospective
for large-scale copper deposits. These technical steps are important for our
team's understanding of the stratigraphy of the Karakubis area and
are critical stage gates on our path towards commercial discovery."

Integrated Geophysical Exploration Programme

The integrated geophysical programme gathered both CSAMT and IP data. This
data has been processed, inverted, and modelled by Kavango. Combined with
previous drill results this data has provided insightful perspectives and new
interpretations that may provide answers to a variety of key questions on the
structural architecture and resulting prospective potential for the Kara
Antiform to host large Tier 1 deposits. All interpretations herein are by
Kavango Resources.

In 2024 First Quantum Minerals (TSX:FM) drilled a 1,266.40m diamond mineral
systems exploration hole in ground immediately along strike and adjacent to
Kavango's Karakubis Project on the Kara Antiform. This diamond hole targeted
interpreted anticlinal trap-sites and the underlying D'Kar Formation ("DKF")
and Ngwako Pan Formations ("NPF") contact zone. This is known to host the
majority of mineralisation and associated deposits on the KCB including MMG
Zone 5 Mine and Sandfire's Motheo Mine along strike.

Kavango performed additional CSAMT and IP, at its expense, across the F drill
line, to be able to apply direct drill hole control on the geophysical
interpretations. Each geophysical traverse was designed to:

·    Deliver key insights into the deeper KCB basin architecture,
including the geophysical characteristics of the underlying lithologies and
provide crucial information on the depth to the underlying DKF/NPF contact
position.

·    Identify structural conduits that may act as fluid migration
pathways, and structural trap sites, in order to assess the potential for Tier
1 copper deposit formation along the Kara Antiform.

Identify structures such as anticlinal fold hinge zones and any associated
potential trap sites, while examining the key factors influencing
copper-silver deposition, including the interplay between alteration,
pathfinder element distribution, sulphides, and mineralisation observed in
previous drilling.

Regional Geological Setting and Mineralisation

Mineralisation on the KCB is sediment-hosted and structurally controlled, with
copper-silver mineralisation principally occurring at the redox contact
between the basal reduced marine sedimentary sequences of the D'Kar Formation
and the oxidised clastic marine units of the Ngwako Pan Formation.

The Kara Antiform shown in Figure 1 consisting of D'Kar Formation lithologies
surrounded by Mamuno Formation comprises a series of tight, asymmetric folds
locally bordered by shears, which possibly served as crucial fluid pathways
for the movement of copper-rich fluids during basin formation and inversion.
These preserved, dome like, anticlinal fold hinge zones appear to form the
ideal trap sites to host the copper-silver mineralisation that regionally host
large deposits like Sandfire's Motheo Mine, A4 and A1 deposits.

Figure 1: Plan showing location of drill holes, CSAMT & IP lines on district geology map overlying regional magnetic (1P5Tilt derivative) image.

Geophysical Methods

The ground geophysical surveys were designed for deep investigation and
resolution of the DKF and NPF sediments.  Induced Polarization ("IP") surveys
utilised Stacked Schlumberger Soundings which can achieve good lateral and
vertical resolution down to 1200m depth with multiple current injections.
Both Resistivity and Chargeability were measured and inversions of these data
produced IP sections that can be interpreted for understanding the geology.
It is Kavango's approach that the Resistivity is responding to the
contributions of lithology, structure and alteration.  The Chargeability is
thought to be responding to changes in low grade magnetite or hematite
content.  Both of these parameters are interpreted here to be showing the
DKF/ NPF contact.

The CSAMT surveys were tuned to measure Resistivity to depths of about
3000m.  Since the method is different from IP, with a different way of
energizing the ground, this method is considered by Kavango to be
complimentary to the IP surveys.  Bostick Transforms were used to solve the
inverse problem for the geological conditions in the KCB.  Various filters
onboard the Geometrics receiver were used to remove measurement statics and to
emphasize specific wavelengths for elucidating the geology.  Kavango
Resources interpret the resultant Resistivity sections to show the DKF / NPF
sedimentary units and the probable DKF/ NPF contact.

Further tuning of these geophysical surveys is planned by Kavango.  The
careful procedures for electrical contact used by 3D Earth Exploration (Pty)
Ltd facilitates pushing the depth of meaningful IP data deeper.  Kavango
hopes to push the IP to 1500m depth.  The adjustment of parameter for the
CSAMT surveys will, in contrast, be tuned to detect shallower and shorter
wavelength parasitic folds by using tighter dipoles.

Geophysical Interpretation

Kavango interpret the processed geophysical data appears to show a dominant
district scale antiform hosting a series of parasitic anticlines and
synclines.

The CSAMT sections shown (Figures 2 & 3) following are all images from the
50m dipole 3D Bostick resistivity transform using a 0.2 spatial filter, which
provides the clearest representation of the interpreted geology.  The
bounding boxes used on the sequence of sections are to relate the relative
scale of the CSAMT data area with that of the Insight section IP data area.
The CSAMT section lines averaged 7km with an average depth of investigation of
3km while the Insight IP was collected over the same lines but with a depth
extent averaging >1,000m.

Figure 2: Oblique view looking northeast along the Kara Antiform through the CSAMT lines with Kavango drill hole traces and First Quantum mineral systems drill hole marked. The backdrop consists of district scale geology map with interpreted middle and upper D'Kar Formation outlined and overlying Mamuno Formation draped over 1P5Tilt derivative magnetic image.

The CSAMT sections have been interpreted to show the antiformal axis, which
may represent more conductive reduced marine units of the DKF, folded around a
core of resistive core, possibly related to oxidised partially hematised and
altered clastic arkose of the NPF. The structural measurements in the First
Quantum drill hole suggest it was collared on the northwest limb of a
parasitic fold within the larger Kara Antiformal dome.

 

Figure 3: Oblique view looking northeast through the CSAMT section with the First Quantum drill hole clearly marked and an accompanying inset to show some of the detail.

The corresponding Insight IP section resistivity and chargeability sections
(Figures 4 & 5) also appear to support structural measurements from the
First Quantum drill hole suggest it was collared on the northwest limb of a
parasitic fold within the larger Kara Antiformal dome.

Figure 4: Oblique view looking northeast through the Insight IP resistivity section with the First Quantum drill hole clearly marked.

Figure 5: Oblique view looking northeast through the Insight IP Chargeability section with the First Quantum drill hole clearly marked.

The Insight IP 50m sections and processed inversions (Figures 6 & 7) also
appear to demonstrate how the Kara Antiform comprises a series of anticlines
and synclines composed of interbedded sequences of reduced marine units of the
DKF folded around a core consisting of oxidised partially hematised and
altered clastic arkose of the NPF.

Figure 6: Oblique view looking northeast along the Kara Antiform through the Insight IP resistivity lines with Kavango drill hole traces and First Quantum drill hole. Backdrop consists of district scale geology map draped over 1P5Tilt derivative magnetic image.

Figure 7: Oblique view looking northeast along the Kara Antiform through the Insight IP chargeability lines with Kavango drill hole traces and First Quantum drill hole. Backdrop consists of district scale geology map draped over 1P5Tilt derivative magnetic image.

Regional Geological Setting and Mineralisation Targeting

A schematic representation of a model based on preservation of anticlinal fold
hinges and domes with associated parasitic folding on the limbs and bound by
district scale shears is shown in Figure 8. Kavango's current exploration
efforts are focused on advancing and testing these buried anticline hinge zone
targets, which are considered the most promising locations for the formation
of Tier 1 deposits along the Kara Antiform.

Figure 8: Schematic illustration of the preserved fold hinge target model at a regional scale with typical settings for known KCB deposits, which can also be applied at a district scale such as the Kara Antiform. (Diagram with permission of Cobre Metals)

Kavango will systematically compile all the data from its drilling and
geophysical programmes and use the data to vector towards a possible
discovery.

 

For further information please contact:

Kavango Resources plc

Ben Turney

+46 7697 406 06

Shard Capital (Broker)

Damon Heath

+44 (0) 207 186 9952

BlytheRay (Financial PR)

Tim Blythe/Megan Ray/Said Izagaren

kavango@blytheray.com (mailto:kavango@blytheray.com)

Tel: +44 207 138 3204

 

 

 

Kavango Competent Person Statement

The technical information contained in this announcement pertaining to geology
and exploration have been compiled by Mr David Catterall, a Competent Person
and a member of a Recognised Professional Organisations (ROPO). David
Catterall has sufficient experience that is relevant to the style of
mineralisation and type of deposit under consideration and to the activity
being undertaken 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 (JORC 2012). David is the principal geologist at
Tulia Blueclay Limited and a consultant to Kavango Resources. David Catterall
is a member of the South African Council for Natural Scientific Professions, a
recognised professional organisation.

The technical information contained in this announcement pertaining to
geophysics have been read and approved by Mr. Jeremy S. Brett, M.Sc., P.Geo.,
Senior Geophysical Consultant, Jeremy S. Brett International Consulting Ltd.
in Toronto, Canada.  Mr. Brett is a member of the Professional Geoscientists
of Ontario, the Prospectors and Developers Association of Canada, the Canadian
Exploration Geophysical Society, and the Society of Economic Geologists.  Mr.
Brett has sufficient experience that is relevant to geophysics applied the
styles of mineralisation and types of deposits under consideration to act as a
Qualified Person as defined under the Canadian National Instrument 43-101,
Standards of Disclosure for Mineral Projects.

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