Home » Posts tagged 'south africa'
Tag Archives: south africa
#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 – Ditau: 470m Strike Extension to Mineralised BIF
Kavango Resources (LSE:KAV) (“Kavango”), the Southern Africa focussed metals exploration company, is pleased to announce that it has confirmed an extension of at least 470m to the Mineralised Banded Iron Formation (the “Mineralised BIF”) intercepted at Target i10 with Hole DITDD004 in the Ditau Project, Botswana.
Kavango has now completed an initial review of drill core and logs from an exploration hole, drilled in 2021, 470m to the NW of DITDD004. This hole (Hole X077-H002, “X077”) was drilled by a company that held an overlapping diamond prospecting licence to Kavango’s Ditau metal prospecting licences.
X077 appears to have intercepted the same Mineralised BIF as DITDD004.
Having already confirmed the Mineralised BIF is >100m thick in Hole DITDD004 (announced >>> 06 March 2023), Kavango is increasingly encouraged that Target i10 could represent a large-scale, continuous system that is prospective for lode gold mineralisation.
Figure 1: Cross-section viewed west, showing Hole DITDD004 and Hole DITDD003, drilled by Kavango, and Hole X077, drilled by the Third Party. Zones of interpreted mineralised BIF are shown in red hatch at the end of Hole DITDD004 and Hole X077, indicating a broader mineralised BIF system extending for at least 470m between holes.
Ben Turney, Chief Executive Officer of Kavango Resources, commented:
“The initial results of our review of neighbouring exploration holes to DITDD004 are highly encouraging. We have been able to establish at least a 470m strike extent of the Banded Iron Formation directly from DITDD004 to Hole X077, bounded by the i10 magnetic anomaly. Both holes show evidence of the same mineralisation style. We’ve achieved this without any further drilling.
Given that both DITDD004 and X077 remain open at depth in the Mineralised BIF, the large-scale promise of this system is strongly underlined. In the context of Dr. Mumin’s view of the lode gold potential here, this is very positive.
We are now in the process of cutting core to send for assay testing and look forward to receiving the results.“
OVERVIEW
· A third party completed an independent diamond core drilling programme in 2021 targeting some of the same geophysical anomalies Kavango has identified at Ditau.
o The company held a diamond prospecting licence that overlapped Kavango’s Ditau metals exploration prospecting licences.
· Following Kavango’s recent identification of lode gold potential from Hole DITDD004, the Company approached the third party to request permission to review core from holes drilled in the vicinity of its i10 Target (“i10”) at Ditau.
o Kavango drilled Hole DITDD004 to intercept Target i10 in April 2022.
o That hole encountered a 100m thick mineralised “Zone of Interest” from a depth of 293m to 393m. This zone remains open at depth at the End of Hole.
o DITDD004 contained anomalous gold and copper values.
o Subsequent analysis by Dr. Hamid Mumin concluded that the “Zone of Interest” appears to represent a high-potential BIF-hosted lode gold system.
o Based on the proximity of Hole X077 to Target i10, Kavango was keen to see if the same BIF was intersected during drilling.
· Kavango has performed initial analysis on core from Hole X077.
o Hole X077 lies 470 NW of DITDD004 and was drilled to a depth of 189m.
o Hole X077 was abandoned after it was confirmed the target was not a kimberlite and therefore had no potential to host diamonds.
o Hole X077 remained open for mineralisation at the End of Hole.
· Based on its initial review of drill core, Kavango concludes that Hole X077 intercepted the same BIF as DITDD004, with clear visual evidence of a mineralising system (‘mineralisation’), in the form of pyrite, chalcopyrite, and carbonate alteration. This strongly supports that the Mineralised BIF is continuous for at least 470m. As with Hole DITDD004, Hole X077 remains open in mineralisation at depth.
· Kavango will now complete more thorough analysis of core from Hole X077 and one other exploration hole drilled by the third party in the vicinity.
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 – Ditau Core Review
Kavango Resources plc (LSE:KAV) (“Kavango”), the Southern Africa focussed metals exploration company, is pleased to announce completion of relogging of drillhole DITDD004 at the Ditau Project.
CORE REVIEW RESULTS
· Relogging of Hole DITDD004 complete, following the recent recommendations from Dr. Hamid Mumin (>>> announced 06 March 2023) who has proposed a possible Banded Iron Formation (BIF) Hosted Lode Gold system at Ditau.
· Hole DITDD004 was drilled to test the i10 Target.
· Key observations from relogging of Hole DITDD004 include:
· Localised brecciation of the BIF has enhanced permeability, allowing passage of sulphide and gold bearing fluids.
· The previously reported gold assays (>>> announced 14 October 2022) are seen to coincide with the presence of fine pyrite in the BIF.
· The association of pyrite with the gold, typical in gold deposits, is useful confirmation of some of the characteristics of the Ditau mineralisation. These characteristics will then be targeted in the next stage of exploration.
· Kavango is developing a working hypothesis that some of the sediments above the BIF may be of Proterozoic age, rather than of the much younger Karoo age sediments.
· If this is the case, then mineralising fluid flow could also have taken place through these.
· Proterozoic age BIFs, such as at Ditau, can be associated with Lode Gold systems.
Brett Grist, Chief Operations Officer of Kavango, stated,
“Dr. Hamid Mumin’s report has highlighted the gold potential at Ditau and proposed a new deposit model. Relogging of the core by Kavango has identified a number of features that could be consistent with this. We look forward to logging the additional drillholes we’ve identified over the I10 Target at the end of this month and using the results to expand our exploration program.”
NEXT STEPS
· Additional core samples have been taken and will be sent to a laboratory in Canada for additional assays.
· Up to 24 samples are also being sampled for petrological work under the supervision of Dr. Mumin, aimed at further enhancing Kavango’s understanding of the mineralisation style prior to future drilling.
· Kavango is preparing a geophysical survey program at Ditau, which is likely to include Induced Polarisation (IP) surveys targeting pyrite as a proxy for gold.
· The IP survey will initially be run over already identified mineralisation, to trace the wider extension over the i10 Target area.
· Kavango has been given permission to relog two additional diamond drill holes located over the i10 Target area, which were drilled by another company.
· The Botswana Geoscience Institute (BGI) has provided approval for Kavango to take and analyse samples from these holes.
Kavango Resources plc
Ben Turney
bturney@kavangoresources.com
+46 7697 406 06
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’.