Overview

Mine Type	Open Pit & Underground
Stage	Preliminary Economic Assessment
Commodities	Gold
Mining Method	Truck & Shovel / Loader Longitudinal stoping Longhole stoping
Backfill type	...
Mine Life	...
Snapshot	The Nabanga project is an early-stage project hosts the Nabanga deposit, and comprises four permits, in the southwest extension of the Diapaga belt. The Nabanga Project was acquired by Endeavour in July 2020 as part of the SEMAFO transaction. The previous owners completed a Preliminary Economic Study on the project in September 2019. The next steps are currently being determined.

Deposit type

• Vein / narrow vein
• Intrusion related
• Mesothermal

Summary:

The Yactibo Permit Group straddles a major NE-trending shear separating the Youga Belt in the northwest from the Diapaga Belt in the southeast. The Nabanga deposit is located to the southeast of the shear, in the Diapaga Belt, which is the easternmost Belt in Burkina Faso.

The Diapaga Belt is dominantly comprised of metamorphosed intermediate volcanic rocks, sediments, foliated or migmatitic granite and gneiss, with less common mafic volcanic rocks and mafic-ultramafic intrusive complexes. Conglomeratic sediments are present and are mapped as Tarkwaian equivalents. Early banded or and/or foliated granitoids, which may be ascribed to the TTG Group, are also very common.

The overall strike of the Nabanga mineralized structure is NE-SW and the dip varies between 55° and 70° toward the northwest. It has an average horizontal thickness of 3.2 m. A large proportion of the high gold values are contained within the quartz vein. The mineralization is arranged as a series of shoots plunging at 45º to the NE. The mineralization is often lower-grade and/or narrower where the main zone is hosted in the amphibolite.

The Nabanga deposit is divided into the North, Central and Southern Extension Zones. A subparallel, 800 m long structure referred to as the Nabanga North Lode is present to the NW.

The main feature on the Property is the granodiorite hosting the mineralization. The intrusion is in contact on the north with an assemblage of volcanic rocks.

The weathering profile in the Nabanga deposit area is relatively shallow and the contact with the fresh rock is generally crossed at a vertical depth of 10 m to 21 m. The main lithologies encountered on the Nabanga permit consist of granodiorite, diorite, amphibolite and the quartz vein.

The gold-bearing structure at Nabanga is predominantly hosted within a magnetite-rich granodiorite intrusive that is part of the Birimian Diapaga greenstone belt. The mineralization is associated with a sheared quartz vein bracketed by a distinctive alteration halo and development of minor (<1%) pyrite. The Nabanga mineralization is manifest on surface by a NE-trending zone of shallow artisanal gold mining site that extends over a 3.5 km strike length.

The main Nabanga gold mineralization is hosted in a single structure extending over 3.5 km, but traceable over several kilometers along the strike to the southwest, beyond the limits of the surface gold workings, based on data from high resolution magnetic surveys and exploration work.

The Nabanga mineralization is considered to belong to the intrusion-hosted, epigenetic, mesothermal class of gold deposits that includes world-class deposits such as Fort Knox and Pogo (Alaska), Vasilkovskoe (Russia), Ahafo and Chirano (Sefwi Belt of Ghana).

Alternatively, the Nabanga deposit belongs to a distinct group that has been generally recognized and accepted during the last decade as a type of gold-only deposits associated with moderately reduced granodiorite-granite stocks and batholiths.

Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

Operational metrics

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Nov 14, 2019
.......................	.......................		May 12, 2024
.......................	.......................		May 12, 2024

Total Workforce	Year
......	2019