|  |
Tasiast Gold Mine
Geology / Mineralization
The Tasiast Project Area is underlain by Archean age Aoueouat greenstone belt, a 70 km long by 15 km wide N-S trending belt within the SW sector of the Reguibat Shield. Gold mineralization in this area is similar to that found in Canadian Archean terranes such as the Abitibi Greenstone Belt. Deposit types that occur within the Tasiast area consist primarily of gold-bearing Banded Iron Formation or "BIF" deposits, as well as Archean vein-type Au mineralization in the adjacent greenstone belts.
Gold mineralization occurs in two parallel trends: the Piment Zone, which is continuous over a 4.5 kilometer strike length, and the West Branch, which has been defined by soils, trenching and limited drilling over a 500 m strike length.
The Piment zone hosts the bulk of the resources and all reserves with five open pits defined over the strike of the mineralisation.
Mineralization dips to the east between 45° and 70° and the shoots plunge at about 30° in a southerly direction. Mineralization widths vary between 5 and 30 meters with a 20 to 25 meter width common in the strongly mineralized areas. The rocks are oxidized to a depth of approximately 40 meters.
|
|
