The Bankan Project is located within Guinea’s Siguiri Basin, which hosts AngloGold’s large Siguiri Mine (+10Moz). The Bankan Discovery consists of a 1.6km-long >0.25g/t gold footprint, with mineralisation continuous across the Kaninko and Saman Permits.
Bankan-1 Drilling Programs
The initial Bankan-1 drilling programs have consisted of 17,000m of auger drilling, 2,200 of air-core drilling, 5,500m of reverse circulation drilling and 3,700m of diamond drilling, delivering the Bankan and Bankan Creek discoveries and confirming a large gold mineralised system which remains open at depth and along strike.
NE Bankan – Diamond Drilling
Results received from 5 Diamond holes drilled west-east has confirmed NE Bankan as a large mineralised system with highly encouraging grades returned over large true widths in fresh rock.
Significant diamond drilling intersections include:
KODD011: 55m at 2.94g/t gold from 97m, including 1m at 46.5g/t gold
KKODD009: 30m at 2.65g/t gold from 101m, including 6m at 9.4g/t gold, 17m at 0.97g/t gold from 81m,and 19m at 1.36g/t gold from 149m
KKODD010: 3m at 5.33g/t gold from 88m, including 1m at 15.2g/t gold
KKODD004: 153m at 1.51g/t gold from 47m (to EOH), including:
6m at 10.40g/t gold from 189m (downhole)
KKODD003: 78m at 2.58g/t gold from 3m, including;
4m at 13.64g/t gold from 75m, plus:
14m at 1.60g/t gold from 88m
17m at 1.63g/t gold from 141m
KKODD002: 22.2m at 1.51g/t gold from 1.8m, including:
2m at 7.65g/t gold
NE Bankan – Reverse Circulation Drilling
KORC002: 33m at 1.72g/t gold (to EOH) from 67m, including:
1m at 22.1g/t gold
KORC005: 26m at 1.15g/t gold from 4m
KORC006: 99m (to EOH) at 1.17g/t goldfrom 1m
KORC007: 15m at 3.42g/t gold from surface, including:
4m at 9.33g/t gold
KORC010: 40m at 1.44g/t gold from surface, and
21m at 1.24g/t gold (to EOH) from 79m
KKORC013: 35m at 2.4g/t gold from 1m, including;
4m at 13.6g/t gold, and
36m at 2.2g/t gold from 64m
KKORC016: 26m at 17.5g/t gold from 58m (to end of hole), including:
6m at 49.9g/t gold from 59m and,
2m at 8.6g/t gold from 72m
6m at 17.3g/t gold from 78m (to end of hole)
KKORC017: 67m at 1.7g/t gold from 32m, including;
2m at 11.0g/t gold from 59m
KKORC021: 73m at 3.2g/t gold from 9m, including:
5m at 8.5g/t gold from 80m
KKORC022: 4m at 3.4/t gold from 60m
KKORC023: 28m at 1.3g/t gold from 2m
KKORC024: 16 at 1.9g/t gold from 80m including:
3m at 7.2g/t gold from 37m
KKORC026: 89m at 1.0g/t goldfrom 7m including
1m at 18.6g/t gold
KKORC031: 5m at 4.9g/t gold from 56m including:
1m at 10.9g/t gold
KKORC033: 8m at 2.9g/t gold from 59m including:
1m at 20.0g/t gold
KORC048: 9m at 2.3g/t goldfrom 26m
KKORC055: 18m at 1.0g/t gold from 7m
KKORC056: 31m at 0.9g/t goldfrom 7m
Bankan Discovery Background and Auger Program
In early July 2019, the Company announced the granting of the Kaninko Permit which was originally identified through a district-scale analysis of the Siguiri Basin utilising the Company’s PredictoreTM methodology.
With initial exploration completed, the exploration team had identified two strong zones of anomalous mineralisation and undertook a shallow power auger drilling program. With encouraging intervals including 11.90g/t gold, 10.30g/t gold, 4.84g/t gold, and 2.27g/t gold. The Company has continued to undertake auger programs, growing the discovery footprint and providing new targets for follow-up drilling. Power auger drilling results were announced 26 February, 19 March , 27 May , 30 June and 03 September.
Power auger drilling is a rapid and cost-effective exploration method for the collection of bedrock samples below tracts of lateritic and transported cover. The auger programs have been designed to explore for extensions to the NE Bankan gold discovery, which is now known to extend across both the Kaninko and Saman Permit areas.
Regional Auger Drilling Program
The Company completed a regional auger program with 174-holes totalling 2,932m completed. The first auger drilling conducted at SE Saman has yielded two high-grade gold intersections, and identified a 600m-long, east-west orientated +100ppb auger anomaly which will be followed up with further auger and RC drilling. Best composite intercepts (from 4 to 20m) were:
SAMAU154: 16m at 4.2g/t gold including 2m at 31.8g/t gold
SAMAU163: 16m at 1.8g/t gold including 2m at 14.0g/t gold
Bankan Creek Diamond Drilling Program
Located only 3km west of the main NE Bankan discovery, the Company has completed a number of early state air-core, Reverse Circulation and diamond drilling programs. Results from drilling programs at Bankan Creek were announced: 27 April, 19 August and 27 August.
Promising intersections included:
KKORC053: 42m at 2.8g/t gold
KKORC052: 14m at 0.9g/t gold
KKODD006: 21m at 2.0g/t gold and;
23m at 2.1g/t gold and;
23m at 2.4g/t gold
KKOAC39: 44m at 2.1g/t gold
Bankan Creek Discovery Background and Auger Program
In February-March 2020, the Company completed programs of shallow power auger drilling and trenching at Bankan Creek, with better trench results including 18m at 1.60g/t gold and 37m at 0.94g/t gold.
During late March and early April 2020, the Company completed 23 holes (totalling 1,038m) of angled air core/reverse circulation drilling along four traverses, testing beneath or along strike from a mix of elevated power auger gold assays, trenching and artisanal pits.
Air-Core & Reverse Circulation Drilling
24-hole (circa 1,193m) of combined Air-Core/Reverse Circulation drilling was completed with results confirming a new gold discovery.