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#KAV Kavango Resources PLC – Ditau: Additional Exploration Holes Logged
Kavango Resources (LSE:KAV), the Southern Africa focussed exploration company, is pleased to announce that it has identified further evidence of a potential wider mineralised system at the Company’s Ditau Project in SW Botswana.
Having confirmed the 470m strike extent of the mineralised Banded Iron Formation (“BIF”) encountered in Hole DITDD004 (announced >>> 31 March 2023), Kavango has completed logging of two historic exploration holes that were drilled in the vicinity of Target i10. Kavango drilled DITDD004 in April 2022 to test Target i10.
Drill core from the two historic exploration holes X077_H002 (“X077”) & X081_H001 (“X081”) both exhibit clear evidence of mineralisation.
X077 is 470m from DITDD004. It was drilled to 189m and intercepted the same mineralised BIF that Dr. Hamid Mumin recently identified as a large-scale system, primarily prospective for possible lode gold mineralisation. The mineralised BIF in X077 remained open at depth and Kavango is considering drilling a twin hole to test this target.
FIGURE 1: End of Hole X077 at 188.93m, pyrite and carbonate both increase at end of hole, suggesting increasing mineralisation, open at depth.
X081 is 3km to the SW of DITDD004 and was drilled to a depth of 144m. The core is highly weathered and contains extensive relict textures after pyrite, and iron oxides in veins. There are clear signs of locally intense hydrothermal activity.
Kavango has sent samples from X077 and X081 for assay testing.
Ben Turney, Chief Executive Officer of Kavango, stated,
“Gaining access to exploration Holes X077 and X081 via the Botswana Geological Institute could prove to be decisive in our Ditau exploration programme.
X077 has already demonstrated the potential strike extent of the thick mineralised Banded Iron Formation we intercepted with our Hole DITDD004 last April.
However, the identification of X081 opens an even more intriguing line of investigation for us. Evidence of intense local hydrothermal activity and the clear presence of iron oxides and sulphides strengthen the possibility of a regional exploration play.
We now look forward to assay results to guide our next steps.“
OVERVIEW
· Two exploration holes were drilled in the vicinity of Kavango’s Target i10 at Ditau. The core from these holes is now the property of the Botswana Geoscience Institute (the “BGI”).
o Hole X077_H002 (“X077”) drilled to 189m & lies 470m NW of DITDD004
o Hole X081_H001 (“X081”) drilled to 144m & lies 3km to the SW of DITDD004
o Holes X077 & X081 were abandoned by the party who drilled them, once it was established the underlying targets were not kimberlites and therefore had no potential for diamonds.
· With the cooperation of the BGI, Kavango has reviewed the drill core from X077 and X081. The Company’s initial findings are:
o X077 encountered the same BIF as DITDD004, with clear visual evidence of mineralisation. This confirms the mineralised BIF is continuous for at least 470m. X077 is open at depth.
FIGURE 2: Mineralised Banded Iron Formation (BIF) identified in Hole X077 appears to represent acontinuation of the same mineralised BIF Kavango intercepted in its Hole DITDD004
o X081 has further clear visual evidence of mineralisation and locally intense hydrothermal activity.
Kavango will now send samples from X077 and X081 for assay testing.
INITIAL REVIEW OF DRILL CORE
The BGI granted a team from Kavango permission to log two previous drillholes (X077 and X081) drilled in the vicinity of Kavango’s Hole DITDD004 in the Ditau Project.
Holes X077 and X081 were drilled with diamond core to depths of 188.93m and 143.93m respectively.
X077 is located 470m NW of DITDD004 and X081 is 3km to the SW and is coincident with a small magnetic anomaly.
DITDD004 contained anomalous gold and copper values, hosted in a Banded Iron Formation (BIF), and has been characterised by Dr. Hamid Mumin [announced >>> 06 March 2023] as a BIF hosted lode gold style of mineralising system, with the possibility for Volcanogenic Massive Sulphides also to be investigated.
Kavango has carried out detailed logging, pXRF determinations, and magnetic susceptibility measurements on X077 and X081. Initial results from this analysis are as follows:
Hole X077
· Extensive brecciated BIF seen, as in Hole DITDD004. This confirms the 470m strike extent of this formation.
· Pyrite observed, plus (at 147m) blebs of chalcopyrite, 15mm in diameter.
FIGURE 3: Extensive pyrite seen in X077, this example is at 155m depth.
· X077 stopped at 188.93m in strong carbonate alteration with pyrite, associated with veining. The degree of alteration was observed to be increasing with depth.
· The mineralising system that has caused this is considered by Kavango to extend beyond the end of the hole. Termination of X077 appears consistent with a company exploring for diamonds as the core was clearly not a kimberlite and appears prospective for metal mineralisation instead.
· X077 confirms that the mineralisation seen in hole DITDD004 is not isolated and is part of a wider system.
Hole X081
· X081 was drilled on a different magnetic target to Target i10.
· X081 is a shallower hole (drilled to 143.93m) and is significantly oxidised.
FIGURE 4: Increasing levels of (now oxidised) sulphides indicated towards the end of Hole X081, which was drilled to 143.93m, with mineralisation open at depth
· It is highly weathered and contains extensive relict textures after pyrite, and iron oxides in veins.
· There are clear signs of locally intense hydrothermal activity.
· Again, the mineralising system in X081 is considered by Kavango to extend beyond the end of the hole. It is unclear whether the mineralising system is related to that seen between Holes DITDD004 and X077. Kavango will investigate this through assay testing of core samples.
· Termination of X081 appears consistent with a company exploring for diamonds as the core was clearly not a kimberlite and appears prospective for metal mineralisation instead.
NEXT STEPS:
· Core cutting is complete and Kavango’s team will send samples from X077 and X081 for assay testing.
· Kavango will in the interim review pXRF and other data in parallel with this to advance its interpretation at Ditau.
· Kavango to share all data and samples with Dr. Mumin in order to upgrade confidence in this exploration model and refine our exploration plan.
Kavango Resources plc
Ben Turney
bturney@kavangoresources.com
First Equity (Broker)
+44 207 374 2212
Jason Robertson
Kavango Competent Person Statement
The technical information contained in this announcement pertaining to geology and exploration have been read and approved by Brett Grist BSc(Hons) FAusIMM (CP). Mr Grist is a Fellow of the Australasian Institute of Mining and Metallurgy with Chartered Professional status. Mr Grist has sufficient experience that is relevant to the exploration programmes and geology of the main styles of mineralisation and deposit types under consideration to act as a Qualified Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’.
#KAV Kavango Resources plc – KCB – CSAMT breakthrough
Botswana focussed metals exploration company Kavango Resources plc (LSE:KAV) is pleased to announce an important breakthrough in its use of Controlled-Source Audio Magnetotelluric (“CSAMT”) surveys as an exploration tool in the Kalahari Copper Belt (“KCB”).
Over the last 12 months Kavango has refined and calibrated its use of CSAMT, across its project portfolio. The Company has now completed a programme of CSAMT surveys on KCB prospecting licence PL082/2018 (announced >>> 12 October 2022).
Line 4A is the longest line of CSAMT on PL082/2018 and extended beyond the licence boundary to the southeast, onto ground that hosts the Kronos occurrence (the “Line 4A Survey”) with the permission of holder Sandfire Resources (ASX:SFR). As Kronos is known to lie at the D’Kar/Ngwako contact zone, Kavango’s objective was to use this occurrence as a calibration point of known geology. The goal is to confirm the D’Kar/Ngwako Pan contact signature in the CSAMT data and then extrapolate this onto PL082/2018. This formational contact is recognised as the primary regional control of copper/silver mineralisation across the KCB.
Initial results of inversions of the CSAMT data from the Line 4A Survey appear to provide high quality vertical resistivity sections that identify sedimentary strata with good resolution, down to 4000m depth. This far exceeds expectations. Previously, at the Company’s Kalahari Suture Zone and Ditau projects, Kavango had achieved detailed resolution of sedimentary strata down to roughly 1000m depth. As such, the Company believes it has achieved a significant breakthrough in its proprietary application of CSAMT technology in the KCB.
If drilling demonstrates that Kavango can accurately map the D’Kar/Ngwako Pan contact from surface, using CSAMT, the Company believes this should substantially enhance its exploration programme in the KCB.
Further updates will be made, as Kavango interprets and analyses inversions of data taken from the lines 3, 4A, 6A and 8 surveys. The Company intends to use these results to calibrate its future use of CSAMT and enhance the ongoing drill programme on licence PL082/2018, which is targeting copper/silver mineralisation.
Jeremy S. Brett, Senior Geophysicist at Kavango Resources, commented:
“CSAMT applied to the Kalahari Copper Belt is showing impressive promise as a geophysical tool to detect the primary bedding and secondary brittle controls that are well known to control mineralization in the belt.
This method provides the detection of structure in vertical section and meshes well with the regional folding and faulting that can be interpreted very well from aeromagnetic surveys.
The combination appears to be very powerful for exploration targeting, and Kavango hopes to prove this via diamond drilling.“
Further information in respect of the Company and its business interests is provided on the Company’s website at www.kavangoresources.com and on Twitter at #KAV.
For further information please contact:
Kavango Resources plc
Ben Turney
First Equity (Joint Broker)
+44 207 374 2212
Jason Robertson
SI Capital Limited (Joint Broker)
+44 1483 413500
Nick Emerson
Kavango Competent Person Statement
The technical information contained in this announcement pertaining to geology and exploration have been read and approved by Brett Grist BSc(Hons) FAusIMM (CP). Mr Grist is a Fellow of the Australasian Institute of Mining and Metallurgy with Chartered Professional status. Mr Grist has sufficient experience that is relevant to the exploration programmes and geology of the main styles of mineralisation and deposit types under consideration to act as a Qualified Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’.
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 to the styles of mineralization 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.
#KAV Kavango Resources PLC – Ditau – IOCG system confirmed at i10
Botswana focussed metals exploration company Kavango Resources plc (LSE:KAV) (“Kavango”) is pleased to announce petrological confirmation of an Iron Oxide Copper Gold (“IOCG”) system at the Company’s Ditau Project in southwestern Botswana.
Kavango has received petrology results of core samples taken from Ditau, including exploration hole DITDD004, which the Company successfully drilled in May 2022. Kavango believes this is the first confirmation of IOCG-style mineralisation in Botswana and suggests there is considerable exploration upside at Ditau, both for higher grade IOCG discovery and for carbonatites that may contain rare earth elements (“REEs”).
Kavango has previously identified 12 ‘ring structure’ geophysical anomalies at Ditau, which remain the Company’s focus for exploration.
HIGHLIGHTS
– Petrological analysis confirms IOCG system at Target i10 in Hole DITDD004
– 15 samples from Ditau tested by an internationally recognised laboratory in the UK
– Kavango believes this is an important exploration lead as such IOCG mineralising systems seldom occur in isolation and can be extensive
– Minor amounts of mineral bastnaesite (a REE carbonate) identified in DITDD004
– This may provide evidence for nearby REE mineralisation
– REE hosting intrusions, such as carbonatites, can occur in proximity to IOCG deposits
– Further deeper and lateral drilling at i10 will test this potential
– Kavango’s geophysical data over Target i10 shows the presence of coincident magnetic and gravity anomalies, which are typical of IOCG deposits
– Next steps
– Kavango to prepare an updated exploration plan, incorporating IOCG deposit model
– Final processing, analysis and interpretation of existing Controlled Source Audio MagnetoTelluric (“CSAMT”) data acquired in H1
– Extensive CSAMT and gravity surveys planned across all 12 Ditau targets
– Drill planning
Ben Turney, Chief Executive Officer of Kavango Resources, commented:
“These are surprising, positive results for Kavango. The Iron Oxide Copper Gold deposit style has never been considered at Ditau. However, given the project’s geological setting, there is a compelling logic to this model.
Ditau sits towards the western edge of the Kaapvaal Craton and is within an established kimberlite/carbonatite corridor. These are supportive indicators of a potentially favourable environment for IOCG mineralisation.
Sand cover at Ditau has always made this a conceptual geophysical venture, but now that we have physical evidence of hydrothermal mineralising processes occurring here this will help shape future exploration.
Our current strongest lead is Hole DITDD004, which tested Target i10 and remains open in what we believe to be an IOCG breccia at 393m. We believe i10 would benefit from deeper and lateral drilling. However, before we send a rig back to Ditau, we need to conduct more CSAMT and gravity surveys over all 12 targets. Results from these surveys should enhance our updated exploration plan and increase our confidence in future drill targeting.”
Background
The i10 Target is a discrete 2.2km diameter magnetic anomaly (the “i10 Target”) that Kavango drilled two exploration holes into, during April and May 2022 (drill completion announced >>> 18 May 2022). The holes were designated DITDD003 and DITDD004.
DITDD004 was drilled to a depth of 393m and intercepted a Zone of Interest, from which the majority of samples in the hole were taken and sent for petrological investigation. This Zone of Interest was first interpreted to extend from 293m to 321m. However, subsequent analysis confirmed the Zone of interest extended from 293m to the end of hole at 393m and was open at depth. In addition to this, assay results confirmed the presence of a gold mineralising system in the Zone of Interest, with a peak grade of 0.175 parts per million (“ppm”) over 2m from 312m to 314m (announced >>> 30 August 2022).
i10 Petrology Results
Subsequent to this, Kavango has now received a petrology report on samples from Ditau, including hole DITDD004, which confirms brecciation and alteration that are considered to represent part of an Iron Oxide Copper Gold (“IOCG”) system.
Kavango believe this to be the first discovery of an IOCG system in Botswana.
The report, carried out by an internationally recognised petrological laboratory, describes mineralogical studies carried out on thin sections prepared from 15 samples of drill core provided by Kavango. These cover the four holes drilled in the 2022 drill program.
Work consisted of optical mineralogy, augmented on two samples by Scanning Electron Microscope Point and Identification techniques.
Kavango regards this development as an important exploration lead; such IOCG mineralising systems seldom occur in isolation and can be extensive.
Taken together it is interpreted that the protolith (initial rock type) was generally a Banded Iron Formation (“BIF”), laid down in a BIF sedimentary process that this has subsequently been partially re-worked and over-printed by later mineralised brecciation, containing predominantly pyrite and quartz and subordinate magnetite.
There are also a series of samples containing altered intrusives that are assumed to be younger. Some of these contain elevated levels of rare earth elements (“REE”). Point Identification Scanning Electron Microscopy work by the petrology laboratory identified the presence in hole DITDD004 of minor amounts of the mineral bastnaesite, a REE carbonate. This may provide evidence for nearby REE mineralisation.
REE hosting intrusions, such as carbonatites, can occur in proximity to IOCG deposits, and so the presence of more than once deposit style in the area is entirely possible.
Kavango’s geophysical data over the i10 Target, shows the presence of coincident magnetic and gravity anomalies, which are typical of IOCG deposits.
Next exploration steps
There is considerable exploration upside at Ditau, both for higher grade IOCG discovery and for carbonatites.
Multiple attributes of IOCG deposits have been identified as present at Ditau by the petrology laboratory as well as by Kavango. Exploration for both IOCG and intrusive hosted REE mineralisation is considered by Kavango to be best achieved by geophysical means. Accordingly, Kavango is planning further Closed Source Audio MagnetoTelluric, and gravity survey work over across Ditau prior to drilling.
8 of Kavango’s 12 targets remain untested by CSAMT and gravity surveys.
In addition to this the Company is considering next steps for drilling. Kavango believes Target i10 in particular would benefit from deeper and lateral drilling, with hole DITDD004 remaining in breccia at depth (393m). The Company will also assess further drilling on Targets i1 and i8, which were also drilled earlier this year.
Kavango has data queued for analysis and interpretation from the additional CSAMT surveys completed on Targets i10, i1 and i8. Further updates shall be provided in due course.
Further information in respect of the Company and its business interests is provided on the Company’s website at www.kavangoresources.com and on Twitter at #KAV.
For further information please contact:
Kavango Resources plc
Ben Turney
+46 7697 406 06
First Equity (Joint Broker)
+44 207 374 2212
Jason Robertson
SI Capital Limited (Joint Broker)
+44 1483 413500
Nick Emerson
Kavango Competent Person Statement
The technical information contained in this announcement pertaining to geology and exploration have been read and approved by Brett Grist BSc(Hons) FAusIMM (CP). Mr Grist is a Fellow of the Australasian Institute of Mining and Metallurgy with Chartered Professional status. Mr Grist has sufficient experience that is relevant to the exploration programmes and geology of the main styles of mineralisation and deposit types under consideration to act as a Qualified Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’.
#KAV Kavango Resources PLC – KCB maiden drill programme
Botswana focussed metals exploration company Kavango Resources plc (LSE:KAV) (“Kavango”) is pleased to announce its maiden drill campaign in the Kalahari Copper Belt (“KCB”).
The Company has signed a contract with Mindea Exploration and Drilling Services Pty (“Mindea”) for the first phase of drilling on licence PL082/2018. Kavango’s technical team believes this prospecting licence (“PL”) is a possible analogue to Khoemacau’s Banana Zone deposit.
HIGHLIGHTS
– Contract signed with Mindea for maiden KCB drill campaign
– Mindea to deploy a multi-purpose rig, capable of both diamond core (“DC”) and reverse circulation (“RC”) drilling
– First phase drill programme
– Up to 6 holes (est. 1,250m) on PL082/2018, as first phase of 37,600m drill strategy (announced >>> 28 September 2022)
– Drilling to commence no later than 9 October
– Expected completion by early November
– Samples to be sent to an internationally accredited laboratory for testing
– Drill Targets
– Two discrete copper geochemical anomalies, which align with mapped regional geology (announced >>> 26 August 2022)
– Northern Zone: 9km strike length with maximum width of 650m
– Central Zone: 27km strike length extending over length of PL082/2018
– Peak soil sample value of 118.8ppm Copper (“Cu”) (pXRF values)
Ben Turney, Chief Executive Officer of Kavango Resources, commented:
“Our technical team has worked extremely hard to maximise our chances of making one or more copper discoveries in the Kalahari Copper Belt. Our thorough exploration programme over the last 18 months has delivered 14 priority targets and I am now delighted to announce our maiden KCB drill campaign.
This is a significant achievement for Kavango. Following our successful drilling in the Kalahari Suture Zone and at Ditau in H1, we are on course to have drilled all three of our projects during 2022.
We are very happy to have partnered again with Mindea. Mindea has been active in the KCB over recent months with some notable successes. This work has recently paused, so we took advantage of that break to initiate drilling on PL082.
We are very fortunate that Mindea has been using a multi-purpose rig on its other job, as this is exactly what we need to optimise our programme as it develops. The timing has also worked out very well, allowing us to drill so soon after the latest positive exploration results from this licence.
Our technical team has done a superb job in identifying such significant drill targets. The alignment of coincident geological, geochemical and geophysical data sets is decidedly encouraging at this stage.
We now approach our first phase drilling on the KCB with a high degree of confidence and look forward to mobilising the rig as soon as we can.”
First phase drill programme details
Kavango has signed a contract with Mindea for a first phase drill programme, consisting of an initial 1,250m of drilling on PL082/2018 in the KCB.
Mindea has been active in the KCB over recent months, with a multi-purpose rig capable of both diamond core and RC drilling. Kavango has been able to take advantage of a pause in that programme to engage Mindea to mobilise the rig to PL082/2018 for the first phase drill programme. Kavango intends to use the same rig for future drilling in the KCB, subject to its availability.
The Company’s technical team believes that PL082/2018 is a possible analogue to Khoemacau’s Banana Zone deposit. The Banana Zone deposit sits immediately to the south of Ghanzi Ridge, and has been reported as having an estimated total mineral resource of 55.8Mt @ 1.1% Cu & 16.4g/t Ag.
The first phase drill programme will focus on testing two discrete copper geochemical anomalies (the “Targets”), which are aligned with mapped underlying geology at PL082/2018. The Company has validated and improved the definition of the Targets through a follow-up infill soil sampling programme (announced >>> 29th September 2022).
The details of the Targets are as follows:
I) Central Zone (Cu: >30ppm, Max 118.8ppm)
– Follows the geological trend of a sub outcropping anticline. This anticline forms the dome that hosts the Zeta and Plutus copper deposits located by Discovery Metals to the North East. The elevated copper values are postulated to represent a possible leakage zone from an underlying redox contact
– The unit has been mapped to extend over the length of PL082/2018, extending over 27km, and is also characterised by a zone of elevated magnetic response
– Infill soil sampling has confirmed elevated readings along the Target, further strengthening its prospectivity
II) Northern Zone (Cu: >30ppm, Max 39.7ppm)
– A robust anomaly occurring in an area with no outcrop (under Kalahari cover) on the edge of a magnetic high that bears similarities to the Ourea and Quirinus copper deposits identified by Discovery Metals in 2009. These deposits are interpreted to be on the limbs of tight anticlines
– Previous work by Kavango identified an Airborne ElectroMagnetic (“AEM”) conductor, which coincides with the geochemical northern zone identified in this latest work
– Infill soil sampling confirmed that the Target extends over 9km of geological strike length and has a maximum width of 650m, which may comprise up to three separate parallel anomalies, with a peak value of 43ppm Cu (pXRF values)
Drilling is expected to commence by 9th October.
Kavango is also mobilising Controlled-Source Audio MagnetoTelluric (“CSAMT”) equipment to PL082/2018 and expects to complete up to 17 line-km of surveys. The Company’s objective is to provide resolution of the anticipated anticline structure and to ensure optimal drill orientation.
Next steps
The first phase drilling programme at PL082/2018 initiates commencement of Kavango’s comprehensive KCB drill strategy (announced >>> 27 September 2022).
The Company has so far identified 188 drill collar locations across the KCB and aims ultimately to complete up to 37,600m of RC and diamond drilling. These locations are centred on 13 priority target areas delineated across four PLs (PL082/2018, PL036/2020, as well as the “Mamuno” licences (PL049/2020 and PL052/2020)).
Kavango will continue further field exploration across all 12 of its PLs in the KCB in parallel with any drilling. The Company expects to add more target areas and drill collar locations to its inventory as this work progresses.
About Mindea
Mindea Exploration and Drilling Services (Pty) LTD was formed in September 2019 by Equity Drilling Limited and Maureen Mokgaotsane (Geologist), Sebanka Lobatlamang (Geologist) and Eddie Babuseng (Attorney at Law) to provide complete exploration solutions to its clients in Botswana.
Mindea is currently operated under the Botswana Citizen Economic Empowerment Policy and is owned 51% by local shareholders and 49% by Equity Drilling. Over the coming years, it is expected that Botswana nationals will wholly own Mindea, with Equity Drilling continuing to provide strategic and technical support.
Mindea operates to strict international safety standards and deploys the latest equipment to its projects. Mindea is rigorous in its planning and site preparation.
Reflecting the quality of its operations, Mindea has recently been awarded a 3-year contract by Debswana to drill various national projects in Botswana. In addition to this, Mindea is a regular drill contractor for DeBeers.
Further information in respect of Kavango and its business interests is provided on the Company’s website at www.kavangoresources.com and on Twitter at #KAV.
For further information please contact:
Kavango Resources plc
Ben Turney
+46 7697 406 06
First Equity (Joint Broker)
+44 207 374 2212
Jason Robertson
SI Capital Limited (Joint Broker)
+44 1483 413500
Nick Emerson
Kavango Competent Person Statement
The technical information contained in this announcement pertaining to geology and exploration have been read and approved by Brett Grist BSc(Hons) FAusIMM (CP). Mr Grist is a Fellow of the Australasian Institute of Mining and Metallurgy with Chartered Professional status. Mr Grist has sufficient experience that is relevant to the exploration programmes and geology of the main styles of mineralisation and deposit types under consideration to act as a Qualified Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’.