Decoding Mount Burgess’ (ASX:MTB) plans for Kihabe-Nxuu Project

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  • Amidst COVID-19 restrictions when on-field activities remained limited, Mount Burgess Mining NL (ASX:MTB) has applied in-depth reviews of existing project data.
  • The Company now plans to develop the Nxuu Deposit first of the two polymetallic sedimentary exhalative (SEDEX) style Kihabe and Nxuu deposits.
  • MTB eyes to quote 2012 JORC Code compliant Indicated/Measured resource at the Nxuu deposit, on the back of ~2,500 – 3,000m of HQ diamond core in-fill drilling.


Mount Burgess Mining NL (ASX: MTB) has been actively advancing exploration at its Kihabe – Nxuu Polymetallic Project in Botswana, applying in-depth reviews of existing project data while in-field project activities remained limited due to COVID-19 restriction. The developments have resulted in in gaining a better understanding of what is now required to move the polymetallic Zn/Pb/Ag/Cu/V/Ge project forward.

ALSO READ: Mount Burgess Mining reports busy December Quarter

The Company now plans to develop the Nxuu Deposit first of the two polymetallic sedimentary exhalative (SEDEX) style Kihabe and Nxuu deposits so far defined at the project. Let us look what developments can be expected from Mount Burgess’ in the days to come.

Diamond Core Drilling Conducted at the Nxuu Deposit,

Recently, diamond core drilling was conducted at the Nxuu deposit. HQ core from drilling is now cut in half on site to prepare for assaying. The Company has indicated that half core will be transported to South Africa, where it will be crushed, ground, and split, and would subsequently be couriered to Australia for assaying.

Some 2,500 – 3,000m of HQ diamond core in-fill drilling is required at the Nxuu Deposit to enable the Company to quote a 2012 JORC Code compliant Indicated/Measured resource, with significant drilling already undertaken during the previous quarter.

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Source: Copyright © 2022 Kalkine Media®, Image Description: MTB update, 27 January 2022

Core from this drilling will be used to assay for Lead, Silver, Zinc, Copper, Vanadium and Germanium.

Mineralogical and Metallurgical Test work

Metallurgical test work will be conducted using the core from the drilling at the Nxuu deposit to confirm the on-site recoveries of the individual metals involved. The Company expects that results from assaying and metallurgical test work will then enable it to proceed to a Pre-feasibility study.

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During the previous quarter, half HQ diamond core from the Kihabe Deposit oxide zone was sent to University of Tasmania for mineralogical test work to determine the host mineral for Germanium. Initial test work has shown that Muscovite-illite, which generally occurs in the form of easily extractable mica crystals has the highest content of Germanium.

Considering recent significant price increases in Gallium (Ga), the Company also completed a further review of Ga assay results from the Kihabe Deposit.

ALSO READ: Gallium could provide product credit for Mount Burgess’ Project!

The University of Tasmania is currently undertaking mineralogical test work on drill core samples from the Kihabe Deposit drill to determine the host minerals for both Ga and Ge. Once determined, further metallurgical testwork will be undertaken to identify the recoverability of Ga and Ge on site.

Identifying project’s most favourable processing route

MTB also aims to determine the Project’s most favourable processing route for production, which could help in maximising commercial beneficiation within Botswana.

The success of milling test work conducted last year proved to be a significant achievement, confirming the ability to significantly reduce the power requirements previously estimated for the project. The application of the Vertical Milling process developed by Energy and Densification Systems (EDS) South Africa on the deeply oxidized Nxuu Deposit has shown to save up to 40% of the originally estimated power required for the project.

 The Company has highlighted that maximization of commercial beneficiation will be dependent upon the availability of a commercial power supply.



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