Completes Resource Definition Drilling At Toega
West African Resources Limited (ASX: WAF) has confirmed the geological model with resource definition drilling intersecting extensive zones of gold mineralisation intercepted at the Toega deposit, Burkina Faso.
- Toega deposit located 14km southwest of Sanbrado
- Resource definition drilling confirms geological model at Toega deposit
- Extensive zones of free-milling gold mineralisation intercepted including; 79m at 2 g/t gold & 56m at 1.6 g/t gold 22m at 5 g/t gold 42m at 2.4 g/t gold 29m at 3.4 g/t gold 41m at 2.3 g/t gold
- Resource estimation studies underway
- Geotechnical and metallurgical test work in progress
- ESIA well progressed for submission by end of year
- Toega feasibility study, updated resource estimate and maiden ore reserve to be reported in Q1 2022.
“Resource definition drilling at the 1.3Moz gold Toega deposit has confirmed the geological model intercepting extensive zones of free-milling gold mineralisation including 79m at 2 g/t gold and 56m at 1.6 g/t gold in drillhole NAK21-DD014,” Executive Chairman. Richard Hyde, said.
“Social and environmental programs are progressing to plan, with the ESIA to be submitted to the government for environmental approval in Q4 2021.
“Geotechnical and metallurgical core samples have also been shipped to Perth for test work. The definitive feasibility study with updated resource estimate and maiden ore reserve for Toega is on track for release in Q1 2022.”
Extensive gold mineralisation was confirmed in the main zone, up to 150m wide and 200m deep with NAK21-DD014 returning 79m at 2 g/t Au from 70m and 56m at 1.6 g/t Au from 159m.
The Toega deposit is hosted in Paleoproterozoic-aged Birimian rocks and is located close to the intersection of the northeast striking Tenkodogo greenstone belt and the regionally significant, northnortheasterly trending Markoye Fault corridor.
The Markoye Fault runs north-northeast over 400km from northern Ghana, through Burkina Faso into southern Mali and Niger and is associated with a number of signficant gold deposits including Sanbrado (WAF), Kiaka (B2 Gold), Bombore (Orezone), Tarparko and Bourroum (Nordgold), and Essakane (Iamgold).
The project area is underlain by metasedimentary rocks which have undergone regional deformation during the Eburean Orogeny (2.2 – 2.0 Ga) and metamorphism to greenschist to lower amphibolite facies. There are three main lithologies including shale, biotite rich psammite and sericite rich psammite (schistose metagreywacke and metasandstone), with the bulk of the ore grade mineralisation (by volume) occurring in the more sericite rich metasediments.
Alteration mineralogy comprises silica, potassium feldspar, biotite, sericite and locally epidote. The dominant sulphide associated with gold mineralisation is pyrrhotite (with subordinate pyrite) which can reach up to 5% in mineralised zones. Structurally, Toega occurs in a much lower strain environment in contrast to Sanbrado, with mineralisation occurring in gently east dipping mineralized packages. The core of the deposit plunges moderately to the north-northeast. Some mineralisation exhibits replacement textures, while there is also evidence of steeper mineralisation associated with quartz-potassium feldspar veining.
The majority of gold mineralisation in the Toega deposit occurs in fresh rock.
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